/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 16:37:15,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 16:37:15,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 16:37:15,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 16:37:15,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 16:37:15,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 16:37:15,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 16:37:15,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 16:37:15,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 16:37:15,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 16:37:15,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 16:37:15,692 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 16:37:15,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 16:37:15,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 16:37:15,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 16:37:15,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 16:37:15,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 16:37:15,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 16:37:15,694 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 16:37:15,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 16:37:15,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 16:37:15,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 16:37:15,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 16:37:15,922 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 16:37:15,923 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 16:37:15,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl [2021-06-05 16:37:15,923 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl' [2021-06-05 16:37:15,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 16:37:15,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 16:37:15,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 16:37:15,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 16:37:15,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 16:37:15,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 16:37:15,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 16:37:15,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 16:37:15,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 16:37:15,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... [2021-06-05 16:37:15,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 16:37:15,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 16:37:15,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 16:37:15,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 16:37:15,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 16:37:16,042 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 16:37:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 16:37:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 16:37:16,042 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 16:37:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 16:37:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 16:37:16,042 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 16:37:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 16:37:16,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 16:37:16,043 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 16:37:16,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 16:37:16,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 16:37:16,043 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 16:37:16,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 16:37:16,200 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 16:37:16,202 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:37:16 BoogieIcfgContainer [2021-06-05 16:37:16,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 16:37:16,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 16:37:16,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 16:37:16,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 16:37:16,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:37:15" (1/2) ... [2021-06-05 16:37:16,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2812ec80 and model type min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 04:37:16, skipping insertion in model container [2021-06-05 16:37:16,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:37:16" (2/2) ... [2021-06-05 16:37:16,207 INFO L111 eAbstractionObserver]: Analyzing ICFG min-array-hom.wvr.bpl [2021-06-05 16:37:16,210 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 16:37:16,210 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 16:37:16,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 16:37:16,211 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 16:37:16,272 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 16:37:16,303 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 16:37:16,321 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 16:37:16,321 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 16:37:16,321 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 16:37:16,321 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 16:37:16,321 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 16:37:16,321 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 16:37:16,321 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 16:37:16,321 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 16:37:16,331 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-05 16:37:16,352 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 16:37:16,363 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:16,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:16,364 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash -986458276, now seen corresponding path program 1 times [2021-06-05 16:37:16,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:16,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512943510] [2021-06-05 16:37:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:16,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:16,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512943510] [2021-06-05 16:37:16,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512943510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 16:37:16,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 16:37:16,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 16:37:16,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541301111] [2021-06-05 16:37:16,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 16:37:16,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:16,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 16:37:16,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 16:37:16,567 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:16,594 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-05 16:37:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 16:37:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 16:37:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:16,609 INFO L225 Difference]: With dead ends: 217 [2021-06-05 16:37:16,609 INFO L226 Difference]: Without dead ends: 202 [2021-06-05 16:37:16,610 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 16:37:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-05 16:37:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-05 16:37:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-05 16:37:16,654 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-05 16:37:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:16,655 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-05 16:37:16,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-05 16:37:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 16:37:16,657 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:16,657 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:16,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 16:37:16,657 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash -433058596, now seen corresponding path program 1 times [2021-06-05 16:37:16,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:16,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647681680] [2021-06-05 16:37:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:16,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:16,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647681680] [2021-06-05 16:37:16,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647681680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 16:37:16,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 16:37:16,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 16:37:16,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844086873] [2021-06-05 16:37:16,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 16:37:16,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 16:37:16,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 16:37:16,704 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:16,730 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-05 16:37:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 16:37:16,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 16:37:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:16,732 INFO L225 Difference]: With dead ends: 158 [2021-06-05 16:37:16,732 INFO L226 Difference]: Without dead ends: 158 [2021-06-05 16:37:16,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 16:37:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-05 16:37:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-05 16:37:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-05 16:37:16,745 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-05 16:37:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:16,746 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-05 16:37:16,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-05 16:37:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 16:37:16,747 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:16,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:16,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 16:37:16,747 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:16,748 INFO L82 PathProgramCache]: Analyzing trace with hash 275548602, now seen corresponding path program 1 times [2021-06-05 16:37:16,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:16,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176456864] [2021-06-05 16:37:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:16,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:16,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176456864] [2021-06-05 16:37:16,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176456864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 16:37:16,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 16:37:16,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 16:37:16,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852216527] [2021-06-05 16:37:16,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 16:37:16,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 16:37:16,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 16:37:16,802 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:16,852 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-05 16:37:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 16:37:16,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 16:37:16,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:16,856 INFO L225 Difference]: With dead ends: 183 [2021-06-05 16:37:16,856 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 16:37:16,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 16:37:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 16:37:16,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-05 16:37:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-05 16:37:16,864 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-05 16:37:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:16,868 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-05 16:37:16,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:16,868 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-05 16:37:16,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 16:37:16,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:16,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:16,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 16:37:16,873 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -483303622, now seen corresponding path program 1 times [2021-06-05 16:37:16,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:16,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682636783] [2021-06-05 16:37:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:17,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:17,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682636783] [2021-06-05 16:37:17,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682636783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:17,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623899990] [2021-06-05 16:37:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:17,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 16:37:17,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:17,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:17,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:17,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2021-06-05 16:37:17,638 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:17,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:17,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:17,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 16:37:17,643 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:17,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:17,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 16:37:17,652 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:17,663 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:17,665 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:37:17,665 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:97, output treesize:21 [2021-06-05 16:37:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:17,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623899990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:17,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:17,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 16:37:17,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735384667] [2021-06-05 16:37:17,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:17,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:17,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:17,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:17,698 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:17,926 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-05 16:37:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 16:37:17,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 16:37:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:17,929 INFO L225 Difference]: With dead ends: 330 [2021-06-05 16:37:17,929 INFO L226 Difference]: Without dead ends: 315 [2021-06-05 16:37:17,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 388.0ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:37:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-05 16:37:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-05 16:37:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-05 16:37:17,953 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-05 16:37:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:17,953 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-05 16:37:17,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-05 16:37:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 16:37:17,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:17,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:18,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:18,155 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:18,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:18,155 INFO L82 PathProgramCache]: Analyzing trace with hash -651112714, now seen corresponding path program 2 times [2021-06-05 16:37:18,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:18,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828105179] [2021-06-05 16:37:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:18,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:18,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828105179] [2021-06-05 16:37:18,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828105179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:18,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797734510] [2021-06-05 16:37:18,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:18,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:18,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:18,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 16:37:18,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:18,567 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:18,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 16:37:18,572 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:18,581 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:37:18,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 16:37:18,582 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:18,590 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:37:18,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 16:37:18,592 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:18,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:18,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:37:18,601 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:18,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:18,666 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 16:37:18,667 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:133, output treesize:122 [2021-06-05 16:37:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:18,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797734510] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:18,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:18,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-05 16:37:18,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998465350] [2021-06-05 16:37:18,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:37:18,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:37:18,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:37:18,814 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:19,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:19,288 INFO L93 Difference]: Finished difference Result 374 states and 1077 transitions. [2021-06-05 16:37:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 16:37:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 16:37:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:19,293 INFO L225 Difference]: With dead ends: 374 [2021-06-05 16:37:19,293 INFO L226 Difference]: Without dead ends: 359 [2021-06-05 16:37:19,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 601.4ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:37:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-06-05 16:37:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229. [2021-06-05 16:37:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-05 16:37:19,302 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-05 16:37:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:19,306 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-05 16:37:19,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-05 16:37:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 16:37:19,308 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:19,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:19,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 16:37:19,521 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash -352339266, now seen corresponding path program 3 times [2021-06-05 16:37:19,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:19,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151456652] [2021-06-05 16:37:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:19,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:19,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151456652] [2021-06-05 16:37:19,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151456652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:19,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589837819] [2021-06-05 16:37:19,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:19,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 16:37:19,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:19,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 16:37:19,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:19,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:19,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:19,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 16:37:19,920 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:19,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:19,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 16:37:19,932 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:19,961 INFO L628 ElimStorePlain]: treesize reduction 35, result has 56.8 percent of original size [2021-06-05 16:37:19,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:19,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 16:37:19,965 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:19,977 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:19,979 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:37:19,980 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:121, output treesize:21 [2021-06-05 16:37:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:20,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589837819] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:20,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:20,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-06-05 16:37:20,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294750590] [2021-06-05 16:37:20,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:20,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:20,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:20,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:20,013 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:20,178 INFO L93 Difference]: Finished difference Result 296 states and 831 transitions. [2021-06-05 16:37:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 16:37:20,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 16:37:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:20,180 INFO L225 Difference]: With dead ends: 296 [2021-06-05 16:37:20,180 INFO L226 Difference]: Without dead ends: 281 [2021-06-05 16:37:20,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 286.5ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:37:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-06-05 16:37:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241. [2021-06-05 16:37:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-05 16:37:20,185 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-05 16:37:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:20,185 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-05 16:37:20,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-05 16:37:20,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 16:37:20,186 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:20,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:20,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 16:37:20,404 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:20,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1218486334, now seen corresponding path program 4 times [2021-06-05 16:37:20,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:20,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4036324] [2021-06-05 16:37:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:20,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:20,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4036324] [2021-06-05 16:37:20,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4036324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:20,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714945337] [2021-06-05 16:37:20,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:20,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:37:20,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:20,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 16:37:20,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:20,749 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:37:20,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 16:37:20,754 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:20,762 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:20,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:37:20,763 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:20,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:20,837 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:37:20,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 16:37:20,840 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:20,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:20,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 16:37:20,856 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:20,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:20,910 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 16:37:20,911 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:137, output treesize:98 [2021-06-05 16:37:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:21,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714945337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:21,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:21,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:37:21,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681546259] [2021-06-05 16:37:21,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:21,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:21,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:21,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:21,049 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:21,348 INFO L93 Difference]: Finished difference Result 409 states and 1185 transitions. [2021-06-05 16:37:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 16:37:21,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 16:37:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:21,350 INFO L225 Difference]: With dead ends: 409 [2021-06-05 16:37:21,350 INFO L226 Difference]: Without dead ends: 394 [2021-06-05 16:37:21,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 429.8ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:37:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-06-05 16:37:21,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 247. [2021-06-05 16:37:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-05 16:37:21,358 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-05 16:37:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:21,358 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-05 16:37:21,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-05 16:37:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:21,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:21,359 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:21,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:21,569 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:21,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1613936552, now seen corresponding path program 5 times [2021-06-05 16:37:21,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:21,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497908873] [2021-06-05 16:37:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:21,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:21,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497908873] [2021-06-05 16:37:21,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497908873] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:21,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307889073] [2021-06-05 16:37:21,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:21,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:37:21,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:21,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:21,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307889073] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:21,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:21,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 16:37:21,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480123566] [2021-06-05 16:37:21,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:21,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:21,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:21,726 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:22,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:22,096 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-05 16:37:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 16:37:22,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:22,099 INFO L225 Difference]: With dead ends: 619 [2021-06-05 16:37:22,099 INFO L226 Difference]: Without dead ends: 619 [2021-06-05 16:37:22,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 207.5ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-05 16:37:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-05 16:37:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-05 16:37:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 3.050675675675676) internal successors, (903), 296 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-05 16:37:22,107 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-05 16:37:22,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:22,107 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-05 16:37:22,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:22,107 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-05 16:37:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:22,108 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:22,108 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:22,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-05 16:37:22,308 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:22,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:22,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1704711900, now seen corresponding path program 6 times [2021-06-05 16:37:22,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:22,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689892476] [2021-06-05 16:37:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:22,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:22,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689892476] [2021-06-05 16:37:22,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689892476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:22,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002223930] [2021-06-05 16:37:22,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:22,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:37:22,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:22,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:22,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:22,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002223930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:22,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:22,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:22,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019187685] [2021-06-05 16:37:22,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:22,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:22,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:22,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:22,443 INFO L87 Difference]: Start difference. First operand 297 states and 903 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:23,070 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-05 16:37:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:37:23,070 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:23,074 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 16:37:23,074 INFO L226 Difference]: Without dead ends: 1078 [2021-06-05 16:37:23,075 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 400.8ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:37:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-05 16:37:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-05 16:37:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.083056478405316) internal successors, (928), 301 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-05 16:37:23,086 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-05 16:37:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:23,086 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-05 16:37:23,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-05 16:37:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:23,088 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:23,088 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:23,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:23,301 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:23,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:23,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2023303316, now seen corresponding path program 7 times [2021-06-05 16:37:23,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:23,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60251797] [2021-06-05 16:37:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:23,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:23,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60251797] [2021-06-05 16:37:23,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60251797] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:23,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177489686] [2021-06-05 16:37:23,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:23,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:23,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:23,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177489686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:23,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:23,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:23,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717703437] [2021-06-05 16:37:23,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:23,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:23,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:23,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:23,453 INFO L87 Difference]: Start difference. First operand 302 states and 928 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:24,040 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-05 16:37:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 16:37:24,040 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:24,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:24,044 INFO L225 Difference]: With dead ends: 951 [2021-06-05 16:37:24,044 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 16:37:24,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 364.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 16:37:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 16:37:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-05 16:37:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 3.0616438356164384) internal successors, (894), 292 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-05 16:37:24,052 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-05 16:37:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:24,052 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-05 16:37:24,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-05 16:37:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:24,053 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:24,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:24,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:24,265 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:24,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1087164644, now seen corresponding path program 1 times [2021-06-05 16:37:24,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:24,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284899317] [2021-06-05 16:37:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:24,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:24,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284899317] [2021-06-05 16:37:24,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284899317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:24,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529195571] [2021-06-05 16:37:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:24,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 16:37:24,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:24,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529195571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:24,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:24,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 16:37:24,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482694092] [2021-06-05 16:37:24,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 16:37:24,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:24,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 16:37:24,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 16:37:24,367 INFO L87 Difference]: Start difference. First operand 293 states and 894 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:24,469 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-05 16:37:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 16:37:24,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:24,471 INFO L225 Difference]: With dead ends: 669 [2021-06-05 16:37:24,471 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 16:37:24,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 16:37:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-05 16:37:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.1699029126213594) internal successors, (1306), 412 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-05 16:37:24,480 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-05 16:37:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:24,480 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-05 16:37:24,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-05 16:37:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:24,481 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:24,481 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:24,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-05 16:37:24,697 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:24,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1524133352, now seen corresponding path program 8 times [2021-06-05 16:37:24,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:24,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969029697] [2021-06-05 16:37:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:24,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:24,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969029697] [2021-06-05 16:37:24,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969029697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:24,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417704626] [2021-06-05 16:37:24,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:24,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:24,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:24,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:24,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:24,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417704626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:24,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:24,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 16:37:24,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500203850] [2021-06-05 16:37:24,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:24,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:24,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:24,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:24,835 INFO L87 Difference]: Start difference. First operand 413 states and 1306 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:24,984 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-05 16:37:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 16:37:24,984 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:24,986 INFO L225 Difference]: With dead ends: 710 [2021-06-05 16:37:24,987 INFO L226 Difference]: Without dead ends: 672 [2021-06-05 16:37:24,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-05 16:37:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-05 16:37:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-05 16:37:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 3.17704280155642) internal successors, (1633), 514 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-05 16:37:24,998 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-05 16:37:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:24,998 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-05 16:37:24,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-05 16:37:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:25,000 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:25,000 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:25,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:25,217 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:25,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2064876612, now seen corresponding path program 2 times [2021-06-05 16:37:25,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:25,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223766218] [2021-06-05 16:37:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:25,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:25,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223766218] [2021-06-05 16:37:25,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223766218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:25,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043840325] [2021-06-05 16:37:25,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:25,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:25,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:25,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 16:37:25,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:25,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043840325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:25,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:25,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 16:37:25,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043942878] [2021-06-05 16:37:25,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 16:37:25,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:25,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 16:37:25,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 16:37:25,393 INFO L87 Difference]: Start difference. First operand 515 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:25,473 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-05 16:37:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 16:37:25,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:25,476 INFO L225 Difference]: With dead ends: 830 [2021-06-05 16:37:25,476 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 16:37:25,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 16:37:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-05 16:37:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.153119092627599) internal successors, (1668), 529 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-05 16:37:25,490 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-05 16:37:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:25,491 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-05 16:37:25,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-05 16:37:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:25,492 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:25,492 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:25,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:25,705 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:25,705 INFO L82 PathProgramCache]: Analyzing trace with hash 718195046, now seen corresponding path program 9 times [2021-06-05 16:37:25,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:25,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697770332] [2021-06-05 16:37:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:25,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:25,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697770332] [2021-06-05 16:37:25,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697770332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:25,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679826364] [2021-06-05 16:37:25,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:25,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:37:25,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:25,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:25,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:25,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679826364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:25,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:25,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:37:25,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93520663] [2021-06-05 16:37:25,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:37:25,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:25,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:37:25,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:37:25,824 INFO L87 Difference]: Start difference. First operand 530 states and 1668 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:26,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:26,115 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-05 16:37:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 16:37:26,115 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:26,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:26,120 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 16:37:26,120 INFO L226 Difference]: Without dead ends: 1196 [2021-06-05 16:37:26,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 157.5ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-05 16:37:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-05 16:37:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-05 16:37:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.1497227356746764) internal successors, (1704), 541 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-05 16:37:26,135 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-05 16:37:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:26,135 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-05 16:37:26,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-05 16:37:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:26,136 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:26,136 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:26,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 16:37:26,352 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:26,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1503109140, now seen corresponding path program 10 times [2021-06-05 16:37:26,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:26,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646297856] [2021-06-05 16:37:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:26,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:26,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646297856] [2021-06-05 16:37:26,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646297856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:26,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445237712] [2021-06-05 16:37:26,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:26,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:37:26,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:26,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:26,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:26,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445237712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:26,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:26,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:37:26,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837144110] [2021-06-05 16:37:26,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:37:26,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:37:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:37:26,497 INFO L87 Difference]: Start difference. First operand 542 states and 1704 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:26,881 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-05 16:37:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 16:37:26,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:26,886 INFO L225 Difference]: With dead ends: 1492 [2021-06-05 16:37:26,886 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 16:37:26,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 226.2ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 16:37:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 16:37:26,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-05 16:37:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1555555555555554) internal successors, (1846), 585 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-05 16:37:26,900 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-05 16:37:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:26,900 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-05 16:37:26,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-05 16:37:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:26,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:26,901 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:27,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 16:37:27,117 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:27,117 INFO L82 PathProgramCache]: Analyzing trace with hash 420086484, now seen corresponding path program 11 times [2021-06-05 16:37:27,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:27,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360855488] [2021-06-05 16:37:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:27,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:27,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360855488] [2021-06-05 16:37:27,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360855488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:27,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013872879] [2021-06-05 16:37:27,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:27,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:27,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:27,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:27,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:27,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013872879] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:27,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:27,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 16:37:27,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027204600] [2021-06-05 16:37:27,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:27,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:27,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:27,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:27,250 INFO L87 Difference]: Start difference. First operand 586 states and 1846 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:27,504 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-05 16:37:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:37:27,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:27,509 INFO L225 Difference]: With dead ends: 1258 [2021-06-05 16:37:27,509 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 16:37:27,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-05 16:37:27,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 16:37:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-05 16:37:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.224570673712021) internal successors, (2441), 757 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-05 16:37:27,524 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-05 16:37:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:27,524 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-05 16:37:27,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:27,524 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-05 16:37:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:27,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:27,525 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:27,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-06-05 16:37:27,741 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:27,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1891164602, now seen corresponding path program 12 times [2021-06-05 16:37:27,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:27,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672344934] [2021-06-05 16:37:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:27,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:27,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672344934] [2021-06-05 16:37:27,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672344934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:27,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185585885] [2021-06-05 16:37:27,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:27,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:37:27,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:27,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:27,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:27,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185585885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:27,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:27,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 16:37:27,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507733999] [2021-06-05 16:37:27,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:27,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:27,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:27,885 INFO L87 Difference]: Start difference. First operand 758 states and 2441 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:28,144 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-05 16:37:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 16:37:28,144 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:28,148 INFO L225 Difference]: With dead ends: 1329 [2021-06-05 16:37:28,149 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 16:37:28,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 175.7ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:37:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 16:37:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-05 16:37:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.220183486238532) internal successors, (2457), 763 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-05 16:37:28,163 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-05 16:37:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:28,163 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-05 16:37:28,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-05 16:37:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:28,164 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:28,164 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:28,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:28,380 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:28,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1458287998, now seen corresponding path program 13 times [2021-06-05 16:37:28,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:28,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518140854] [2021-06-05 16:37:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:28,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:28,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518140854] [2021-06-05 16:37:28,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518140854] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:28,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572502776] [2021-06-05 16:37:28,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:28,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:28,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:28,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572502776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:28,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:28,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:37:28,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179553134] [2021-06-05 16:37:28,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:37:28,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:28,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:37:28,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:37:28,505 INFO L87 Difference]: Start difference. First operand 764 states and 2457 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:28,813 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-05 16:37:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 16:37:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:28,818 INFO L225 Difference]: With dead ends: 1548 [2021-06-05 16:37:28,818 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 16:37:28,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 16:37:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 16:37:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-05 16:37:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.204928664072633) internal successors, (2471), 771 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-05 16:37:28,836 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-05 16:37:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:28,836 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-05 16:37:28,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-05 16:37:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:28,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:28,837 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:29,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:29,041 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1186278808, now seen corresponding path program 14 times [2021-06-05 16:37:29,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:29,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150299676] [2021-06-05 16:37:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:29,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:29,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150299676] [2021-06-05 16:37:29,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150299676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:29,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943377669] [2021-06-05 16:37:29,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:29,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:29,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:29,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:29,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:29,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943377669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:29,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:29,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:29,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527911243] [2021-06-05 16:37:29,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:29,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:29,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:29,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:29,181 INFO L87 Difference]: Start difference. First operand 772 states and 2471 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:29,838 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-05 16:37:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 16:37:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:29,860 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 16:37:29,860 INFO L226 Difference]: Without dead ends: 2734 [2021-06-05 16:37:29,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 392.9ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:37:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-05 16:37:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-05 16:37:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 3.3107142857142855) internal successors, (2781), 840 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-05 16:37:29,888 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-05 16:37:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:29,888 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-05 16:37:29,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-05 16:37:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:29,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:29,890 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:30,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:30,105 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:30,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:30,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1753230888, now seen corresponding path program 15 times [2021-06-05 16:37:30,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:30,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518467693] [2021-06-05 16:37:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:30,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:30,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518467693] [2021-06-05 16:37:30,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518467693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:30,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297988065] [2021-06-05 16:37:30,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:30,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:37:30,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:30,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:30,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:30,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297988065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:30,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:30,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:30,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26231213] [2021-06-05 16:37:30,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:30,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:30,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:30,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:30,248 INFO L87 Difference]: Start difference. First operand 841 states and 2781 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:30,926 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-05 16:37:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 16:37:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:30,931 INFO L225 Difference]: With dead ends: 2693 [2021-06-05 16:37:30,931 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 16:37:30,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 419.0ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:37:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 16:37:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-05 16:37:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 3.289156626506024) internal successors, (2730), 830 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-05 16:37:30,955 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-05 16:37:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:30,955 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-05 16:37:30,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-05 16:37:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:30,957 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:30,957 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:31,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-06-05 16:37:31,174 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:31,175 INFO L82 PathProgramCache]: Analyzing trace with hash 580885030, now seen corresponding path program 16 times [2021-06-05 16:37:31,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:31,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715669704] [2021-06-05 16:37:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:31,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:31,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715669704] [2021-06-05 16:37:31,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715669704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:31,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578068676] [2021-06-05 16:37:31,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:31,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:37:31,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:31,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:31,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:31,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578068676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:31,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:31,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 16:37:31,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260183532] [2021-06-05 16:37:31,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:31,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:31,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:31,305 INFO L87 Difference]: Start difference. First operand 831 states and 2730 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:31,824 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-05 16:37:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:37:31,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:31,829 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 16:37:31,829 INFO L226 Difference]: Without dead ends: 2677 [2021-06-05 16:37:31,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 310.1ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 16:37:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-05 16:37:31,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-05 16:37:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2997630331753554) internal successors, (2785), 844 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-05 16:37:31,853 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-05 16:37:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:31,853 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-05 16:37:31,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-05 16:37:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:31,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:31,855 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:32,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 16:37:32,073 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash 662261118, now seen corresponding path program 17 times [2021-06-05 16:37:32,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:32,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078248932] [2021-06-05 16:37:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:32,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:32,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078248932] [2021-06-05 16:37:32,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078248932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:32,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416786136] [2021-06-05 16:37:32,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:32,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:37:32,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:32,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:32,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:32,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416786136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:32,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:32,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 16:37:32,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742494167] [2021-06-05 16:37:32,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:32,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:32,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:32,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:32,209 INFO L87 Difference]: Start difference. First operand 845 states and 2785 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:32,732 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-05 16:37:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 16:37:32,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:32,736 INFO L225 Difference]: With dead ends: 2474 [2021-06-05 16:37:32,737 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 16:37:32,737 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 305.2ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 16:37:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 16:37:32,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-05 16:37:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2973933649289098) internal successors, (2783), 844 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-05 16:37:32,758 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-05 16:37:32,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:32,758 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-05 16:37:32,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-05 16:37:32,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:32,760 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:32,760 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:32,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 16:37:32,975 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:32,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1592918334, now seen corresponding path program 18 times [2021-06-05 16:37:32,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:32,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981900095] [2021-06-05 16:37:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:33,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:33,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981900095] [2021-06-05 16:37:33,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981900095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:33,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002851821] [2021-06-05 16:37:33,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:33,034 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:37:33,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:33,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:33,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:33,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002851821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:33,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:33,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:33,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640005752] [2021-06-05 16:37:33,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:33,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:33,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:33,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:33,106 INFO L87 Difference]: Start difference. First operand 845 states and 2783 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:33,678 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-05 16:37:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 16:37:33,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:33,683 INFO L225 Difference]: With dead ends: 2514 [2021-06-05 16:37:33,684 INFO L226 Difference]: Without dead ends: 2514 [2021-06-05 16:37:33,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 334.8ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 16:37:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-05 16:37:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-05 16:37:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.3039906103286385) internal successors, (2815), 852 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-05 16:37:33,705 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-05 16:37:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:33,705 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-05 16:37:33,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-05 16:37:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:33,707 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:33,707 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:33,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-05 16:37:33,921 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:33,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1059009808, now seen corresponding path program 19 times [2021-06-05 16:37:33,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:33,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249493724] [2021-06-05 16:37:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:33,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:33,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249493724] [2021-06-05 16:37:33,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249493724] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:33,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780535968] [2021-06-05 16:37:33,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:33,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:33,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:34,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780535968] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:34,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:34,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:34,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846070764] [2021-06-05 16:37:34,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:34,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:34,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:34,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:34,041 INFO L87 Difference]: Start difference. First operand 853 states and 2815 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:34,585 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-05 16:37:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 16:37:34,585 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:34,595 INFO L225 Difference]: With dead ends: 2332 [2021-06-05 16:37:34,595 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 16:37:34,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 307.5ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 16:37:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 16:37:34,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-05 16:37:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.301643192488263) internal successors, (2813), 852 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-05 16:37:34,617 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-05 16:37:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:34,618 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-05 16:37:34,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-05 16:37:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:34,619 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:34,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:34,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 16:37:34,833 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1971295360, now seen corresponding path program 3 times [2021-06-05 16:37:34,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:34,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799283937] [2021-06-05 16:37:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:34,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:34,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799283937] [2021-06-05 16:37:34,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799283937] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:34,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251500731] [2021-06-05 16:37:34,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:34,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 16:37:34,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:34,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 16:37:34,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:34,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251500731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:34,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:34,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 16:37:34,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861796301] [2021-06-05 16:37:34,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 16:37:34,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:34,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 16:37:34,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 16:37:34,936 INFO L87 Difference]: Start difference. First operand 853 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:35,004 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-05 16:37:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 16:37:35,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:35,006 INFO L225 Difference]: With dead ends: 929 [2021-06-05 16:37:35,006 INFO L226 Difference]: Without dead ends: 929 [2021-06-05 16:37:35,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-05 16:37:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-05 16:37:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.3029525032092426) internal successors, (2573), 779 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-05 16:37:35,028 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-05 16:37:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:35,028 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-05 16:37:35,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-05 16:37:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:35,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:35,030 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:35,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:35,246 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:35,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1041095616, now seen corresponding path program 20 times [2021-06-05 16:37:35,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:35,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453089639] [2021-06-05 16:37:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:35,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:35,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453089639] [2021-06-05 16:37:35,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453089639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:35,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534312652] [2021-06-05 16:37:35,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:35,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:35,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:35,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:35,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:35,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534312652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:35,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:35,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 16:37:35,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299597718] [2021-06-05 16:37:35,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 16:37:35,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:35,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 16:37:35,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 16:37:35,348 INFO L87 Difference]: Start difference. First operand 780 states and 2573 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:35,647 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-05 16:37:35,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 16:37:35,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:35,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:35,657 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 16:37:35,657 INFO L226 Difference]: Without dead ends: 1555 [2021-06-05 16:37:35,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 174.8ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:37:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-05 16:37:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-05 16:37:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.296076099881094) internal successors, (2772), 841 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-05 16:37:35,672 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-05 16:37:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:35,672 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-05 16:37:35,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-05 16:37:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:35,673 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:35,674 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:35,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:35,889 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:35,889 INFO L82 PathProgramCache]: Analyzing trace with hash 861583836, now seen corresponding path program 21 times [2021-06-05 16:37:35,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:35,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197886322] [2021-06-05 16:37:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:35,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:35,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197886322] [2021-06-05 16:37:35,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197886322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:35,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788547520] [2021-06-05 16:37:35,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 16:37:35,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:37:35,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:35,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:35,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:35,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788547520] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:35,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:35,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 16:37:35,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394720216] [2021-06-05 16:37:35,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 16:37:35,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:35,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 16:37:35,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 16:37:35,990 INFO L87 Difference]: Start difference. First operand 842 states and 2772 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:36,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:36,207 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-05 16:37:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 16:37:36,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:36,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:36,209 INFO L225 Difference]: With dead ends: 1605 [2021-06-05 16:37:36,209 INFO L226 Difference]: Without dead ends: 1605 [2021-06-05 16:37:36,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-05 16:37:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-05 16:37:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-05 16:37:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.2905027932960893) internal successors, (2945), 895 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-05 16:37:36,237 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-05 16:37:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:36,237 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-05 16:37:36,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-05 16:37:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:36,241 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:36,241 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:36,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:36,457 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:36,457 INFO L82 PathProgramCache]: Analyzing trace with hash 816762694, now seen corresponding path program 22 times [2021-06-05 16:37:36,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:36,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493488820] [2021-06-05 16:37:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:36,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:36,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493488820] [2021-06-05 16:37:36,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493488820] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:36,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052470740] [2021-06-05 16:37:36,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:36,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:37:36,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:36,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:36,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:37:36,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052470740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:36,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:36,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 16:37:36,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246527996] [2021-06-05 16:37:36,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 16:37:36,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:36,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 16:37:36,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 16:37:36,555 INFO L87 Difference]: Start difference. First operand 896 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:36,756 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-05 16:37:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 16:37:36,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:36,758 INFO L225 Difference]: With dead ends: 1524 [2021-06-05 16:37:36,758 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 16:37:36,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 16:37:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 16:37:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-05 16:37:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.288268156424581) internal successors, (2943), 895 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-05 16:37:36,772 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-05 16:37:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:36,772 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-05 16:37:36,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-05 16:37:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:36,774 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:36,774 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:36,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-06-05 16:37:36,989 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1414099352, now seen corresponding path program 23 times [2021-06-05 16:37:36,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:36,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303207443] [2021-06-05 16:37:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:37,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:37,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303207443] [2021-06-05 16:37:37,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303207443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:37,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728765577] [2021-06-05 16:37:37,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:37,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:37:37,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:37,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:37,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:37,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728765577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:37,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:37,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 16:37:37,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012025591] [2021-06-05 16:37:37,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 16:37:37,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:37,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 16:37:37,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 16:37:37,091 INFO L87 Difference]: Start difference. First operand 896 states and 2943 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:37,283 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-05 16:37:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:37:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:37,285 INFO L225 Difference]: With dead ends: 1508 [2021-06-05 16:37:37,285 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 16:37:37,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 16:37:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 16:37:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-05 16:37:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.276854928017719) internal successors, (2959), 903 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-05 16:37:37,299 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-05 16:37:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:37,299 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-05 16:37:37,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-05 16:37:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:37,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:37,301 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:37,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:37,501 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:37,501 INFO L82 PathProgramCache]: Analyzing trace with hash 887679068, now seen corresponding path program 24 times [2021-06-05 16:37:37,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:37,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625429920] [2021-06-05 16:37:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:37,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:37,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625429920] [2021-06-05 16:37:37,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625429920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:37,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998576621] [2021-06-05 16:37:37,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:37,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:37:37,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:37,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:37,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:37,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998576621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:37,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:37,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:37,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541292878] [2021-06-05 16:37:37,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:37,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:37,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:37,629 INFO L87 Difference]: Start difference. First operand 904 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:38,078 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-05 16:37:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 16:37:38,079 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:38,082 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 16:37:38,082 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 16:37:38,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 294.8ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 16:37:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 16:37:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-05 16:37:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.367049009384776) internal successors, (3229), 959 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-05 16:37:38,099 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-05 16:37:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:38,100 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-05 16:37:38,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-05 16:37:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:38,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:38,101 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:38,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-05 16:37:38,308 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1454631148, now seen corresponding path program 25 times [2021-06-05 16:37:38,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:38,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943042223] [2021-06-05 16:37:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:38,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:38,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943042223] [2021-06-05 16:37:38,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943042223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:38,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393256129] [2021-06-05 16:37:38,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:38,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:38,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:38,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393256129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:38,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:38,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:38,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890640696] [2021-06-05 16:37:38,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:38,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:38,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:38,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:38,456 INFO L87 Difference]: Start difference. First operand 960 states and 3229 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:38,875 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-05 16:37:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 16:37:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:38,878 INFO L225 Difference]: With dead ends: 2335 [2021-06-05 16:37:38,878 INFO L226 Difference]: Without dead ends: 2335 [2021-06-05 16:37:38,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 297.0ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 16:37:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-05 16:37:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-05 16:37:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 16:37:38,896 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 16:37:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:38,896 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 16:37:38,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 16:37:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:38,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:38,898 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:39,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:39,101 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 282285290, now seen corresponding path program 26 times [2021-06-05 16:37:39,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:39,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551530827] [2021-06-05 16:37:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:39,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:39,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551530827] [2021-06-05 16:37:39,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551530827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:39,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100238561] [2021-06-05 16:37:39,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:39,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:39,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:39,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:39,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:39,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100238561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:39,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:39,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 16:37:39,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475000216] [2021-06-05 16:37:39,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:39,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:39,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:39,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:39,227 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:39,609 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-05 16:37:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 16:37:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:39,614 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 16:37:39,614 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 16:37:39,614 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 243.1ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:37:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 16:37:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-05 16:37:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 16:37:39,632 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 16:37:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:39,632 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 16:37:39,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 16:37:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:39,633 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:39,633 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:39,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-05 16:37:39,841 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:39,841 INFO L82 PathProgramCache]: Analyzing trace with hash 363661378, now seen corresponding path program 27 times [2021-06-05 16:37:39,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:39,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694619255] [2021-06-05 16:37:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:39,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:39,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694619255] [2021-06-05 16:37:39,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694619255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:39,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184326400] [2021-06-05 16:37:39,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:39,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:37:39,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:39,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:39,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:39,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184326400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:39,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:39,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 16:37:39,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766699767] [2021-06-05 16:37:39,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:39,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:39,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:39,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:39,978 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:40,305 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-05 16:37:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 16:37:40,306 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:40,308 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 16:37:40,308 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 16:37:40,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 196.3ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 16:37:40,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 16:37:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-05 16:37:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 16:37:40,327 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 16:37:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:40,327 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 16:37:40,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 16:37:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:40,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:40,329 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:40,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:40,531 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1294318594, now seen corresponding path program 28 times [2021-06-05 16:37:40,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:40,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365545300] [2021-06-05 16:37:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:40,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:40,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365545300] [2021-06-05 16:37:40,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365545300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:40,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242982127] [2021-06-05 16:37:40,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:40,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:37:40,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:40,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:40,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:40,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242982127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:40,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:40,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:40,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238471729] [2021-06-05 16:37:40,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:40,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:40,655 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:40,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:40,998 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-05 16:37:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 16:37:40,999 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:41,001 INFO L225 Difference]: With dead ends: 2199 [2021-06-05 16:37:41,001 INFO L226 Difference]: Without dead ends: 2199 [2021-06-05 16:37:41,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 218.6ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:37:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-05 16:37:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-05 16:37:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 16:37:41,018 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 16:37:41,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:41,018 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 16:37:41,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 16:37:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:41,020 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:41,020 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:41,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-06-05 16:37:41,222 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:41,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:41,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1357609548, now seen corresponding path program 29 times [2021-06-05 16:37:41,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:41,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309217478] [2021-06-05 16:37:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:41,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:41,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309217478] [2021-06-05 16:37:41,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309217478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:41,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107042054] [2021-06-05 16:37:41,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:41,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:37:41,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:41,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:41,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:41,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107042054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:41,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:41,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:41,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063001699] [2021-06-05 16:37:41,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:41,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:41,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:41,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:41,372 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:41,685 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-05 16:37:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 16:37:41,685 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:41,688 INFO L225 Difference]: With dead ends: 2156 [2021-06-05 16:37:41,688 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 16:37:41,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 199.7ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-05 16:37:41,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 16:37:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-05 16:37:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 16:37:41,705 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 16:37:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:41,705 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 16:37:41,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 16:37:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:41,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:41,706 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:41,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 16:37:41,921 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:41,921 INFO L82 PathProgramCache]: Analyzing trace with hash -354181564, now seen corresponding path program 30 times [2021-06-05 16:37:41,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:41,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767372770] [2021-06-05 16:37:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:41,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:41,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767372770] [2021-06-05 16:37:41,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767372770] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:41,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137384535] [2021-06-05 16:37:41,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:41,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:37:41,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:41,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:41,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:42,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137384535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:42,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:42,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:37:42,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216288815] [2021-06-05 16:37:42,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:37:42,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:42,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:37:42,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:37:42,028 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:42,324 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-05 16:37:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 16:37:42,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:42,327 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 16:37:42,327 INFO L226 Difference]: Without dead ends: 2097 [2021-06-05 16:37:42,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 183.7ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:37:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-05 16:37:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-05 16:37:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1046 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-05 16:37:42,351 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-05 16:37:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:42,351 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-05 16:37:42,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-05 16:37:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:42,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:42,353 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:42,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:42,564 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:42,565 INFO L82 PathProgramCache]: Analyzing trace with hash -272805476, now seen corresponding path program 31 times [2021-06-05 16:37:42,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:42,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142950960] [2021-06-05 16:37:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:42,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:42,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142950960] [2021-06-05 16:37:42,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142950960] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:42,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477912426] [2021-06-05 16:37:42,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:42,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:42,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477912426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:42,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:42,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:37:42,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56139983] [2021-06-05 16:37:42,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:37:42,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:42,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:37:42,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:37:42,702 INFO L87 Difference]: Start difference. First operand 1047 states and 3534 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:42,934 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-05 16:37:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:37:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:42,936 INFO L225 Difference]: With dead ends: 1963 [2021-06-05 16:37:42,937 INFO L226 Difference]: Without dead ends: 1959 [2021-06-05 16:37:42,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-05 16:37:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-05 16:37:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-05 16:37:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.376673040152964) internal successors, (3532), 1046 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-05 16:37:42,956 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-05 16:37:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:42,957 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-05 16:37:42,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-05 16:37:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:42,958 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:42,958 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:43,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:43,174 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:43,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1787897448, now seen corresponding path program 32 times [2021-06-05 16:37:43,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:43,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359799299] [2021-06-05 16:37:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:43,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:43,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359799299] [2021-06-05 16:37:43,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359799299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:43,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853128482] [2021-06-05 16:37:43,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:43,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:37:43,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:43,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:43,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:43,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853128482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:43,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:43,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:37:43,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282205623] [2021-06-05 16:37:43,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:37:43,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:43,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:37:43,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:37:43,272 INFO L87 Difference]: Start difference. First operand 1047 states and 3532 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:43,490 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-05 16:37:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:37:43,491 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:43,493 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 16:37:43,493 INFO L226 Difference]: Without dead ends: 1716 [2021-06-05 16:37:43,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 16:37:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-05 16:37:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-05 16:37:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.372848948374761) internal successors, (3528), 1046 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-05 16:37:43,514 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-05 16:37:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:43,515 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-05 16:37:43,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-05 16:37:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:43,516 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:43,516 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:43,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:43,729 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash -190770732, now seen corresponding path program 33 times [2021-06-05 16:37:43,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:43,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41436007] [2021-06-05 16:37:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:43,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:43,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41436007] [2021-06-05 16:37:43,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41436007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:43,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090561213] [2021-06-05 16:37:43,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:43,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:37:43,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:43,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:43,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:43,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090561213] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:43,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:43,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:43,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445119187] [2021-06-05 16:37:43,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:43,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:43,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:43,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:43,844 INFO L87 Difference]: Start difference. First operand 1047 states and 3528 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:44,139 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-05 16:37:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:37:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:44,142 INFO L225 Difference]: With dead ends: 1821 [2021-06-05 16:37:44,142 INFO L226 Difference]: Without dead ends: 1821 [2021-06-05 16:37:44,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 16:37:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-05 16:37:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-05 16:37:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.370304114490161) internal successors, (3768), 1118 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-05 16:37:44,158 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-05 16:37:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:44,158 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-05 16:37:44,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-05 16:37:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:44,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:44,160 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:44,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:44,363 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:44,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1452268422, now seen corresponding path program 34 times [2021-06-05 16:37:44,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:44,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303815484] [2021-06-05 16:37:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:44,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:44,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303815484] [2021-06-05 16:37:44,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303815484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:44,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925121991] [2021-06-05 16:37:44,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:44,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:37:44,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:44,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:44,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:44,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925121991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:44,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:44,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 16:37:44,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416310200] [2021-06-05 16:37:44,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:37:44,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:44,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:37:44,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:37:44,484 INFO L87 Difference]: Start difference. First operand 1119 states and 3768 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:44,729 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-05 16:37:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 16:37:44,729 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:44,731 INFO L225 Difference]: With dead ends: 1790 [2021-06-05 16:37:44,731 INFO L226 Difference]: Without dead ends: 1786 [2021-06-05 16:37:44,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 162.9ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-05 16:37:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-05 16:37:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-05 16:37:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.368515205724508) internal successors, (3766), 1118 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-05 16:37:44,747 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-05 16:37:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:44,747 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-05 16:37:44,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-05 16:37:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 16:37:44,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:44,749 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:44,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-06-05 16:37:44,964 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 184811244, now seen corresponding path program 35 times [2021-06-05 16:37:44,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:44,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709337345] [2021-06-05 16:37:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:44,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:44,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709337345] [2021-06-05 16:37:44,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709337345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:44,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374385745] [2021-06-05 16:37:44,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:45,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:37:45,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:45,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:37:45,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:45,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374385745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:45,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:45,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 16:37:45,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249394424] [2021-06-05 16:37:45,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:37:45,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:45,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:37:45,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:37:45,084 INFO L87 Difference]: Start difference. First operand 1119 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:45,228 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-05 16:37:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:37:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 16:37:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:45,231 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 16:37:45,231 INFO L226 Difference]: Without dead ends: 1637 [2021-06-05 16:37:45,231 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:37:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-05 16:37:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-05 16:37:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.3649373881932023) internal successors, (3762), 1118 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-05 16:37:45,246 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-05 16:37:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:45,246 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-05 16:37:45,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-05 16:37:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:37:45,248 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:45,248 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:45,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:45,448 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -998684486, now seen corresponding path program 4 times [2021-06-05 16:37:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:45,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566016229] [2021-06-05 16:37:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:45,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:45,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566016229] [2021-06-05 16:37:45,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566016229] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:45,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184260753] [2021-06-05 16:37:45,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:46,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:37:46,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:46,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:37:46,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:46,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:37:46,415 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:37:46,421 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:37:46,428 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:37:46,441 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:37:46,450 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:46,455 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:37:46,462 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:37:46,467 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:37:46,473 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:46,485 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:37:46,492 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:46,499 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:37:46,506 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:37:46,512 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:46,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:46,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:46,516 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:46,598 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:37:46,599 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:37:46,600 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:37:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:46,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184260753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:46,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:46,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:37:46,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925579508] [2021-06-05 16:37:46,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:37:46,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:46,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:37:46,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:37:46,657 INFO L87 Difference]: Start difference. First operand 1119 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:47,273 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-06-05 16:37:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:47,503 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions. [2021-06-05 16:37:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:37:47,503 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:37:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:47,505 INFO L225 Difference]: With dead ends: 1517 [2021-06-05 16:37:47,505 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 16:37:47,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1205.3ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:37:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 16:37:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141. [2021-06-05 16:37:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.362280701754386) internal successors, (3833), 1140 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-05 16:37:47,520 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-05 16:37:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:47,520 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-05 16:37:47,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-05 16:37:47,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:37:47,522 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:47,522 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:47,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-06-05 16:37:47,737 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:47,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:47,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1267884794, now seen corresponding path program 5 times [2021-06-05 16:37:47,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:47,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334384299] [2021-06-05 16:37:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:48,362 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-05 16:37:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:48,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:48,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334384299] [2021-06-05 16:37:48,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334384299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:48,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008499072] [2021-06-05 16:37:48,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:48,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:37:48,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:48,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:37:48,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:48,896 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-05 16:37:48,974 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_5, v_prenex_7], 3=[v_prenex_9, A]} [2021-06-05 16:37:48,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:48,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:48,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:48,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:48,983 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:48,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:48,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:48,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:37:48,989 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:49,101 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-06-05 16:37:49,102 INFO L628 ElimStorePlain]: treesize reduction 119, result has 50.4 percent of original size [2021-06-05 16:37:49,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:49,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:49,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:49,107 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:49,144 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:49,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:49,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 16:37:49,155 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:49,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:49,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:49,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:37:49,195 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:49,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:49,229 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:37:49,229 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:281, output treesize:56 [2021-06-05 16:37:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:49,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008499072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:49,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:49,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:37:49,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627984488] [2021-06-05 16:37:49,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:37:49,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:49,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:37:49,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:37:49,285 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:50,111 INFO L93 Difference]: Finished difference Result 1495 states and 4899 transitions. [2021-06-05 16:37:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:37:50,111 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:37:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:50,113 INFO L225 Difference]: With dead ends: 1495 [2021-06-05 16:37:50,113 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 16:37:50,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1454.1ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:37:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 16:37:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1150. [2021-06-05 16:37:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.3568320278503045) internal successors, (3857), 1149 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3857 transitions. [2021-06-05 16:37:50,127 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3857 transitions. Word has length 26 [2021-06-05 16:37:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:50,127 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 3857 transitions. [2021-06-05 16:37:50,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3857 transitions. [2021-06-05 16:37:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:37:50,129 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:50,129 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:50,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:50,330 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:50,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1435653194, now seen corresponding path program 36 times [2021-06-05 16:37:50,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:50,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625943314] [2021-06-05 16:37:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:50,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:50,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625943314] [2021-06-05 16:37:50,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625943314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:50,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589430791] [2021-06-05 16:37:50,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:50,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:37:50,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:50,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:37:50,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:51,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:37:51,373 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:37:51,383 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:37:51,392 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:37:51,400 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:37:51,408 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:37:51,415 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 16:37:51,423 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:37:51,432 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:37:51,440 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:37:51,448 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 16:37:51,457 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 16:37:51,465 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 16:37:51,473 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:37:51,480 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:51,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:51,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:37:51,485 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:51,507 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-05 16:37:51,508 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:37:51,508 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 16:37:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:51,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589430791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:51,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:51,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 16:37:51,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292779094] [2021-06-05 16:37:51,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:37:51,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:51,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:37:51,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:37:51,536 INFO L87 Difference]: Start difference. First operand 1150 states and 3857 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:53,038 INFO L93 Difference]: Finished difference Result 1607 states and 5192 transitions. [2021-06-05 16:37:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:37:53,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:37:53,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:53,041 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 16:37:53,041 INFO L226 Difference]: Without dead ends: 1592 [2021-06-05 16:37:53,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1678.1ms TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:37:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-05 16:37:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1180. [2021-06-05 16:37:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.340966921119593) internal successors, (3939), 1179 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3939 transitions. [2021-06-05 16:37:53,055 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3939 transitions. Word has length 26 [2021-06-05 16:37:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:53,055 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3939 transitions. [2021-06-05 16:37:53,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3939 transitions. [2021-06-05 16:37:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:37:53,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:53,057 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:53,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-06-05 16:37:53,273 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:53,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:53,273 INFO L82 PathProgramCache]: Analyzing trace with hash -630606018, now seen corresponding path program 6 times [2021-06-05 16:37:53,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:53,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556310977] [2021-06-05 16:37:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:53,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:53,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556310977] [2021-06-05 16:37:53,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556310977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:53,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919877065] [2021-06-05 16:37:53,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:53,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:37:53,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:37:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:37:53,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:53,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:53,975 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:53,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:37:53,975 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:53,983 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:53,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:37:53,984 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:53,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:53,992 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:53,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:37:53,993 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:53,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,003 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:54,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:37:54,005 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:54,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:37:54,033 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,044 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:54,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:54,045 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:54,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:37:54,056 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:54,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:37:54,071 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,087 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:54,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:37:54,088 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,098 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:54,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:37:54,103 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,112 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:54,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:37:54,113 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,121 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:54,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:37:54,121 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,132 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:37:54,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:37:54,134 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,145 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:37:54,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:37:54,147 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,159 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:37:54,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:37:54,161 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:54,167 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:37:54,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:37:54,168 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:54,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:37:54,236 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:37:54,236 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 16:37:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:54,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919877065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:54,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:54,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:37:54,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348619950] [2021-06-05 16:37:54,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:37:54,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:54,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:37:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:37:54,427 INFO L87 Difference]: Start difference. First operand 1180 states and 3939 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:54,796 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-06-05 16:37:55,056 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-06-05 16:37:55,466 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-05 16:37:55,990 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-06-05 16:37:56,131 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 16:37:56,330 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-06-05 16:37:56,573 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2021-06-05 16:37:56,718 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-06-05 16:37:57,001 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 16:37:57,287 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-06-05 16:37:57,568 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-06-05 16:37:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:37:57,623 INFO L93 Difference]: Finished difference Result 1842 states and 5907 transitions. [2021-06-05 16:37:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 16:37:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:37:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:37:57,626 INFO L225 Difference]: With dead ends: 1842 [2021-06-05 16:37:57,626 INFO L226 Difference]: Without dead ends: 1827 [2021-06-05 16:37:57,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3166.5ms TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 16:37:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2021-06-05 16:37:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1198. [2021-06-05 16:37:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.346700083542189) internal successors, (4006), 1197 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4006 transitions. [2021-06-05 16:37:57,643 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4006 transitions. Word has length 26 [2021-06-05 16:37:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:37:57,643 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 4006 transitions. [2021-06-05 16:37:57,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:37:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4006 transitions. [2021-06-05 16:37:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:37:57,645 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:37:57,645 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:37:57,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:57,845 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:37:57,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:37:57,846 INFO L82 PathProgramCache]: Analyzing trace with hash 919775546, now seen corresponding path program 37 times [2021-06-05 16:37:57,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:37:57,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398981748] [2021-06-05 16:37:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:37:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:58,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:37:58,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398981748] [2021-06-05 16:37:58,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398981748] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:58,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524977956] [2021-06-05 16:37:58,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:37:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:37:58,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:37:58,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:37:58,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 16:37:58,809 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-05 16:37:58,817 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:37:58,826 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:37:58,834 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:37:58,842 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2021-06-05 16:37:58,851 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-05 16:37:58,859 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:37:58,868 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 16:37:58,876 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 16:37:58,885 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:37:58,892 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 16:37:58,900 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:37:58,908 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 16:37:58,915 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2021-06-05 16:37:58,923 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:37:58,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:37:58,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 16:37:58,930 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:37:58,959 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-05 16:37:58,960 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:37:58,960 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-05 16:37:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:37:58,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524977956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:37:58,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:37:58,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 16:37:58,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146450956] [2021-06-05 16:37:58,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:37:58,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:37:58,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:37:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:37:58,989 INFO L87 Difference]: Start difference. First operand 1198 states and 4006 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:00,005 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2021-06-05 16:38:00,144 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2021-06-05 16:38:00,317 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-05 16:38:00,453 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2021-06-05 16:38:00,864 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-05 16:38:01,277 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2021-06-05 16:38:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:01,397 INFO L93 Difference]: Finished difference Result 1797 states and 5747 transitions. [2021-06-05 16:38:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 16:38:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:01,400 INFO L225 Difference]: With dead ends: 1797 [2021-06-05 16:38:01,400 INFO L226 Difference]: Without dead ends: 1782 [2021-06-05 16:38:01,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2500.6ms TimeCoverageRelationStatistics Valid=356, Invalid=1624, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 16:38:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2021-06-05 16:38:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1206. [2021-06-05 16:38:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 3.349377593360996) internal successors, (4036), 1205 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 4036 transitions. [2021-06-05 16:38:01,415 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 4036 transitions. Word has length 26 [2021-06-05 16:38:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:01,415 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 4036 transitions. [2021-06-05 16:38:01,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 4036 transitions. [2021-06-05 16:38:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:01,416 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:01,416 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:01,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2021-06-05 16:38:01,617 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:01,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:01,617 INFO L82 PathProgramCache]: Analyzing trace with hash -56543298, now seen corresponding path program 38 times [2021-06-05 16:38:01,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:01,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127956860] [2021-06-05 16:38:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:02,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:02,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127956860] [2021-06-05 16:38:02,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127956860] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:02,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036770010] [2021-06-05 16:38:02,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:02,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:38:02,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:02,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 16:38:02,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:02,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:02,794 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 16:38:02,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-05 16:38:02,802 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:02,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:02,852 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 16:38:02,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-05 16:38:02,860 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:02,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:02,905 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:38:02,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 16:38:02,919 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:02,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:02,940 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:38:02,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:38:02,940 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:02,979 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:38:02,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 16:38:02,994 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,032 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size [2021-06-05 16:38:03,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 42 [2021-06-05 16:38:03,035 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,054 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:38:03,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 16:38:03,054 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,102 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:38:03,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-05 16:38:03,112 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,156 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:38:03,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 16:38:03,161 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,181 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:38:03,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 16:38:03,182 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,224 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:38:03,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 16:38:03,232 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,251 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:38:03,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 16:38:03,251 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,270 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:38:03,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 16:38:03,270 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,288 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:38:03,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:38:03,289 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,332 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:38:03,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 49 [2021-06-05 16:38:03,342 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:03,354 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:38:03,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 16:38:03,355 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:03,651 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-05 16:38:03,651 INFO L628 ElimStorePlain]: treesize reduction 109, result has 76.9 percent of original size [2021-06-05 16:38:03,659 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:38:03,659 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:437 [2021-06-05 16:38:03,906 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-05 16:38:04,069 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-06-05 16:38:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:04,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036770010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:04,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:04,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2021-06-05 16:38:04,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632449244] [2021-06-05 16:38:04,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 16:38:04,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 16:38:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-05 16:38:04,100 INFO L87 Difference]: Start difference. First operand 1206 states and 4036 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:05,649 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2021-06-05 16:38:05,787 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 16:38:05,959 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-05 16:38:06,389 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-06-05 16:38:06,925 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-06-05 16:38:07,281 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-06-05 16:38:07,446 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-06-05 16:38:07,619 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-06-05 16:38:08,005 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2021-06-05 16:38:08,355 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-06-05 16:38:08,551 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 46 [2021-06-05 16:38:08,805 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-05 16:38:09,005 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-06-05 16:38:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:09,238 INFO L93 Difference]: Finished difference Result 2305 states and 7128 transitions. [2021-06-05 16:38:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 16:38:09,239 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:09,242 INFO L225 Difference]: With dead ends: 2305 [2021-06-05 16:38:09,242 INFO L226 Difference]: Without dead ends: 2260 [2021-06-05 16:38:09,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 5524.9ms TimeCoverageRelationStatistics Valid=600, Invalid=2940, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:38:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2021-06-05 16:38:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1349. [2021-06-05 16:38:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.306379821958457) internal successors, (4457), 1348 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4457 transitions. [2021-06-05 16:38:09,261 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4457 transitions. Word has length 26 [2021-06-05 16:38:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:09,261 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 4457 transitions. [2021-06-05 16:38:09,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:09,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4457 transitions. [2021-06-05 16:38:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:09,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:09,263 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:09,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:09,463 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2141610526, now seen corresponding path program 7 times [2021-06-05 16:38:09,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:09,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347975363] [2021-06-05 16:38:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:09,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:09,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347975363] [2021-06-05 16:38:09,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347975363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:09,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108659783] [2021-06-05 16:38:09,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:09,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:38:09,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:10,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:10,297 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:10,303 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:10,308 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:10,313 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:10,318 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:10,323 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:10,329 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:10,334 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:10,340 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:10,346 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:10,353 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:10,359 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:38:10,365 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:10,372 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:10,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:10,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:10,377 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:10,444 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:38:10,446 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:38:10,446 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:38:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:10,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108659783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:10,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:10,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:38:10,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250353333] [2021-06-05 16:38:10,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:38:10,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:10,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:38:10,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:38:10,511 INFO L87 Difference]: Start difference. First operand 1349 states and 4457 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:11,474 INFO L93 Difference]: Finished difference Result 1744 states and 5646 transitions. [2021-06-05 16:38:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 16:38:11,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:11,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:11,477 INFO L225 Difference]: With dead ends: 1744 [2021-06-05 16:38:11,477 INFO L226 Difference]: Without dead ends: 1729 [2021-06-05 16:38:11,477 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1228.8ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-06-05 16:38:11,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-06-05 16:38:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1360. [2021-06-05 16:38:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3038999264164826) internal successors, (4490), 1359 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4490 transitions. [2021-06-05 16:38:11,493 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4490 transitions. Word has length 26 [2021-06-05 16:38:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:11,493 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 4490 transitions. [2021-06-05 16:38:11,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4490 transitions. [2021-06-05 16:38:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:11,495 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:11,495 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:11,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486 [2021-06-05 16:38:11,708 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:11,708 INFO L82 PathProgramCache]: Analyzing trace with hash 124958754, now seen corresponding path program 8 times [2021-06-05 16:38:11,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:11,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991043165] [2021-06-05 16:38:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:12,286 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-05 16:38:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:12,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:12,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991043165] [2021-06-05 16:38:12,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991043165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:12,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140843739] [2021-06-05 16:38:12,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:12,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:38:12,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:12,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:38:12,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:12,704 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 16:38:12,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:12,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:12,838 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 16:38:12,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:38:12,839 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:12,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:12,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:12,865 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 16:38:12,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 30 [2021-06-05 16:38:12,867 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:13,231 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 130 [2021-06-05 16:38:13,232 INFO L628 ElimStorePlain]: treesize reduction 403, result has 46.9 percent of original size [2021-06-05 16:38:13,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:38:13,253 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:13,376 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 16:38:13,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:13,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:13,398 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37 [2021-06-05 16:38:13,401 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:13,548 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 16:38:13,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:13,571 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 16:38:13,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-05 16:38:13,581 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:13,702 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 16:38:13,703 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,723 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:38:13,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:38:13,725 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:13,841 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 16:38:13,841 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:13,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:13,859 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 16:38:13,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:38:13,860 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:13,973 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 16:38:13,973 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:13,989 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:13,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-06-05 16:38:13,990 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:14,102 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 16:38:14,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:14,119 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:38:14,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:38:14,123 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:14,239 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 16:38:14,239 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:14,261 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:38:14,261 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 16 variables, input treesize:825, output treesize:551 [2021-06-05 16:38:14,522 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 16:38:14,723 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 16:38:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:14,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140843739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:14,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:14,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:38:14,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691562318] [2021-06-05 16:38:14,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:38:14,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:14,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:38:14,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:38:14,819 INFO L87 Difference]: Start difference. First operand 1360 states and 4490 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:15,764 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2021-06-05 16:38:16,126 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-06-05 16:38:16,361 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 46 [2021-06-05 16:38:16,665 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-06-05 16:38:17,006 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 16:38:17,466 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 16:38:17,871 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-06-05 16:38:18,225 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-06-05 16:38:18,370 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-05 16:38:18,623 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2021-06-05 16:38:18,947 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 16:38:19,357 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-06-05 16:38:19,576 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2021-06-05 16:38:20,065 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-06-05 16:38:20,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:20,144 INFO L93 Difference]: Finished difference Result 2016 states and 6372 transitions. [2021-06-05 16:38:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 16:38:20,144 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:20,147 INFO L225 Difference]: With dead ends: 2016 [2021-06-05 16:38:20,147 INFO L226 Difference]: Without dead ends: 2001 [2021-06-05 16:38:20,148 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 5840.7ms TimeCoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 16:38:20,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2021-06-05 16:38:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1371. [2021-06-05 16:38:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 3.3124087591240876) internal successors, (4538), 1370 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4538 transitions. [2021-06-05 16:38:20,166 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4538 transitions. Word has length 26 [2021-06-05 16:38:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:20,166 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 4538 transitions. [2021-06-05 16:38:20,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4538 transitions. [2021-06-05 16:38:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:20,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:20,168 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:20,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable518 [2021-06-05 16:38:20,383 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1812450954, now seen corresponding path program 9 times [2021-06-05 16:38:20,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:20,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025995078] [2021-06-05 16:38:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:20,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:20,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025995078] [2021-06-05 16:38:20,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025995078] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:20,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342451184] [2021-06-05 16:38:20,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:20,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:38:20,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:20,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:38:20,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:21,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:21,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:21,150 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:21,156 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:21,162 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:21,168 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:21,176 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:21,185 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:21,191 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:21,196 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:21,202 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:21,208 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:21,214 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:38:21,219 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:21,224 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:21,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:21,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:21,228 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:21,296 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:38:21,298 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:38:21,298 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:38:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:21,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342451184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:21,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:21,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:38:21,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821671710] [2021-06-05 16:38:21,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:38:21,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:21,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:38:21,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:38:21,346 INFO L87 Difference]: Start difference. First operand 1371 states and 4538 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:22,003 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-06-05 16:38:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:22,600 INFO L93 Difference]: Finished difference Result 1859 states and 6002 transitions. [2021-06-05 16:38:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:38:22,600 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:22,602 INFO L225 Difference]: With dead ends: 1859 [2021-06-05 16:38:22,602 INFO L226 Difference]: Without dead ends: 1844 [2021-06-05 16:38:22,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1450.5ms TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2021-06-05 16:38:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-06-05 16:38:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1380. [2021-06-05 16:38:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 16:38:22,619 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 16:38:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:22,619 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 16:38:22,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 16:38:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:22,621 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:22,621 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:22,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:22,821 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:22,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1980260046, now seen corresponding path program 10 times [2021-06-05 16:38:22,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:22,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241026762] [2021-06-05 16:38:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:23,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:23,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241026762] [2021-06-05 16:38:23,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241026762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:23,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379764134] [2021-06-05 16:38:23,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:23,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:38:23,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:23,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:38:23,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:23,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:23,594 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:23,599 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:23,604 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:23,609 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:23,616 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:23,622 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:23,627 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:23,632 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:23,638 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:23,644 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:23,650 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:23,655 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:23,667 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:23,673 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:23,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:23,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:38:23,676 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:23,747 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:38:23,749 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:38:23,749 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:38:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:23,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379764134] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:23,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:23,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:38:23,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868346821] [2021-06-05 16:38:23,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:38:23,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:23,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:38:23,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:38:23,808 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:24,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:24,448 INFO L93 Difference]: Finished difference Result 1722 states and 5631 transitions. [2021-06-05 16:38:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:38:24,448 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:24,451 INFO L225 Difference]: With dead ends: 1722 [2021-06-05 16:38:24,451 INFO L226 Difference]: Without dead ends: 1707 [2021-06-05 16:38:24,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 987.6ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-05 16:38:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-06-05 16:38:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1380. [2021-06-05 16:38:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 16:38:24,467 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 16:38:24,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:24,467 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 16:38:24,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 16:38:24,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:24,469 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:24,469 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:24,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable599 [2021-06-05 16:38:24,669 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:24,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:24,670 INFO L82 PathProgramCache]: Analyzing trace with hash 247191222, now seen corresponding path program 11 times [2021-06-05 16:38:24,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:24,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970154779] [2021-06-05 16:38:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:25,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:25,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970154779] [2021-06-05 16:38:25,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970154779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:25,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091717285] [2021-06-05 16:38:25,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:25,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:38:25,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:25,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:38:25,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:25,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,380 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:38:25,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:38:25,382 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,389 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:25,390 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,400 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:38:25,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:38:25,402 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,415 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:25,416 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,424 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:25,425 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,435 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:25,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:38:25,436 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,447 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:25,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:38:25,449 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,459 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:25,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:38:25,463 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,471 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:25,471 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,482 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:25,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:38:25,485 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,493 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:25,494 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,502 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:38:25,502 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,513 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:38:25,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:38:25,514 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:25,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:38:25,525 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,533 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:38:25,533 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:25,538 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:25,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:25,539 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:25,616 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:25,621 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:38:25,622 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 16:38:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:25,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091717285] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:25,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:25,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:38:25,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526979584] [2021-06-05 16:38:25,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:38:25,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:25,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:38:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:38:25,801 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:26,461 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-06-05 16:38:26,929 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2021-06-05 16:38:27,326 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2021-06-05 16:38:28,175 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-06-05 16:38:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:28,408 INFO L93 Difference]: Finished difference Result 2174 states and 6962 transitions. [2021-06-05 16:38:28,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 16:38:28,408 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:28,416 INFO L225 Difference]: With dead ends: 2174 [2021-06-05 16:38:28,416 INFO L226 Difference]: Without dead ends: 2144 [2021-06-05 16:38:28,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2614.3ms TimeCoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 16:38:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-06-05 16:38:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1380. [2021-06-05 16:38:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 16:38:28,455 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 16:38:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:28,455 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 16:38:28,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 16:38:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:28,457 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:28,457 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:28,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable631 [2021-06-05 16:38:28,673 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:28,673 INFO L82 PathProgramCache]: Analyzing trace with hash 317421942, now seen corresponding path program 12 times [2021-06-05 16:38:28,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:28,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664118385] [2021-06-05 16:38:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:29,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:29,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664118385] [2021-06-05 16:38:29,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664118385] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:29,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010769217] [2021-06-05 16:38:29,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:29,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:38:29,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:29,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:38:29,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:29,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,384 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:29,384 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,392 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:38:29,392 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,400 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:29,400 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:29,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:38:29,412 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,422 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:29,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:38:29,426 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,434 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:29,434 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,444 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:29,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:38:29,446 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,463 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:29,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:38:29,465 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,475 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:38:29,476 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,487 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:29,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:38:29,492 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,502 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:29,502 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,510 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:29,511 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,521 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:38:29,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:38:29,522 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,532 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:38:29,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:38:29,533 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,543 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:38:29,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:38:29,544 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:29,549 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:38:29,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:29,550 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:29,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:29,622 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:38:29,622 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 16:38:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:29,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010769217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:29,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:29,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:38:29,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083551001] [2021-06-05 16:38:29,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:38:29,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:29,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:38:29,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:38:29,814 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:30,252 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-06-05 16:38:30,963 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-05 16:38:31,402 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2021-06-05 16:38:31,755 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-06-05 16:38:31,897 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-06-05 16:38:32,152 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 16:38:32,493 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-06-05 16:38:32,762 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2021-06-05 16:38:32,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:32,815 INFO L93 Difference]: Finished difference Result 1982 states and 6430 transitions. [2021-06-05 16:38:32,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 16:38:32,815 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:32,818 INFO L225 Difference]: With dead ends: 1982 [2021-06-05 16:38:32,818 INFO L226 Difference]: Without dead ends: 1967 [2021-06-05 16:38:32,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 3198.7ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 16:38:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-06-05 16:38:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1380. [2021-06-05 16:38:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 16:38:32,836 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 16:38:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:32,836 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 16:38:32,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 16:38:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:32,838 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:32,838 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:33,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable672 [2021-06-05 16:38:33,038 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:33,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:33,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1219202938, now seen corresponding path program 39 times [2021-06-05 16:38:33,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:33,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620853251] [2021-06-05 16:38:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:33,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:33,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620853251] [2021-06-05 16:38:33,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620853251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:33,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476685468] [2021-06-05 16:38:33,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:33,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:38:33,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:33,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:38:33,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:34,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:38:34,079 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 16:38:34,087 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:38:34,095 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:38:34,103 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:38:34,117 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:38:34,126 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 16:38:34,134 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:38:34,142 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:38:34,150 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 16:38:34,158 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:38:34,166 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:38:34,173 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 16:38:34,181 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:38:34,187 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:34,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:34,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:38:34,192 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:34,215 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-05 16:38:34,216 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:38:34,216 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 16:38:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:34,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476685468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:34,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:34,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 16:38:34,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118944013] [2021-06-05 16:38:34,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:38:34,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:34,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:38:34,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:38:34,254 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:35,073 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2021-06-05 16:38:35,591 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2021-06-05 16:38:35,861 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2021-06-05 16:38:36,007 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2021-06-05 16:38:36,427 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-06-05 16:38:37,520 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2021-06-05 16:38:37,890 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 16:38:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:38,198 INFO L93 Difference]: Finished difference Result 3227 states and 9972 transitions. [2021-06-05 16:38:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 16:38:38,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:38,204 INFO L225 Difference]: With dead ends: 3227 [2021-06-05 16:38:38,204 INFO L226 Difference]: Without dead ends: 3182 [2021-06-05 16:38:38,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 3911.0ms TimeCoverageRelationStatistics Valid=669, Invalid=3363, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 16:38:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2021-06-05 16:38:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 1395. [2021-06-05 16:38:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1394 states have (on average 3.33142037302726) internal successors, (4644), 1394 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 4644 transitions. [2021-06-05 16:38:38,228 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 4644 transitions. Word has length 26 [2021-06-05 16:38:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:38,228 INFO L482 AbstractCegarLoop]: Abstraction has 1395 states and 4644 transitions. [2021-06-05 16:38:38,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 4644 transitions. [2021-06-05 16:38:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:38,230 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:38,230 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:38,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable689 [2021-06-05 16:38:38,431 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:38,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1873451990, now seen corresponding path program 40 times [2021-06-05 16:38:38,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:38,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481202500] [2021-06-05 16:38:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:38,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:38,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481202500] [2021-06-05 16:38:38,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481202500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:38,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57702095] [2021-06-05 16:38:38,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:38,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:38:38,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:38:38,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:39,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:38:39,438 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:38:39,446 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:38:39,453 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 16:38:39,461 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:38:39,468 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:38:39,475 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:38:39,483 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:38:39,490 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:38:39,506 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:38:39,514 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 16:38:39,521 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:38:39,529 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:38:39,536 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 16:38:39,543 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:39,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:39,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 16:38:39,547 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:39,571 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-05 16:38:39,572 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:38:39,572 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 16:38:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:39,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57702095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:39,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:39,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 16:38:39,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670797351] [2021-06-05 16:38:39,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:38:39,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:39,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:38:39,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:38:39,620 INFO L87 Difference]: Start difference. First operand 1395 states and 4644 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:40,625 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-06-05 16:38:40,907 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2021-06-05 16:38:41,247 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-06-05 16:38:41,664 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-06-05 16:38:42,055 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-06-05 16:38:42,903 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-06-05 16:38:43,074 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-06-05 16:38:43,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:43,311 INFO L93 Difference]: Finished difference Result 3009 states and 9476 transitions. [2021-06-05 16:38:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 16:38:43,312 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:43,316 INFO L225 Difference]: With dead ends: 3009 [2021-06-05 16:38:43,316 INFO L226 Difference]: Without dead ends: 2964 [2021-06-05 16:38:43,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3644.6ms TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 16:38:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2021-06-05 16:38:43,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1398. [2021-06-05 16:38:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 3.3335719398711525) internal successors, (4657), 1397 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4657 transitions. [2021-06-05 16:38:43,339 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4657 transitions. Word has length 26 [2021-06-05 16:38:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:43,339 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 4657 transitions. [2021-06-05 16:38:43,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4657 transitions. [2021-06-05 16:38:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:43,341 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:43,341 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:43,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable795 [2021-06-05 16:38:43,541 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash -39803338, now seen corresponding path program 41 times [2021-06-05 16:38:43,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:43,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155372090] [2021-06-05 16:38:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:43,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:43,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155372090] [2021-06-05 16:38:43,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155372090] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:43,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230598377] [2021-06-05 16:38:43,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:44,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:38:44,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:44,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:38:44,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:44,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,455 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 16:38:44,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37 [2021-06-05 16:38:44,460 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,488 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 16:38:44,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34 [2021-06-05 16:38:44,492 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,518 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-05 16:38:44,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-05 16:38:44,519 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,543 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:44,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 45 [2021-06-05 16:38:44,555 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,580 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-05 16:38:44,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-05 16:38:44,581 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,598 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:38:44,599 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,615 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:38:44,616 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,639 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 16:38:44,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 16:38:44,641 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,666 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 16:38:44,667 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,682 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:38:44,683 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,708 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 16:38:44,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 16:38:44,712 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,728 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 1 [2021-06-05 16:38:44,728 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,744 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:38:44,745 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,760 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1 [2021-06-05 16:38:44,761 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,775 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 16:38:44,776 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:44,785 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 16:38:44,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 16:38:44,786 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:44,885 INFO L628 ElimStorePlain]: treesize reduction 66, result has 65.3 percent of original size [2021-06-05 16:38:44,887 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:38:44,888 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133 [2021-06-05 16:38:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:45,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230598377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:45,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:45,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 16:38:45,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747623234] [2021-06-05 16:38:45,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:38:45,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:45,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:38:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:38:45,017 INFO L87 Difference]: Start difference. First operand 1398 states and 4657 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:45,393 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-06-05 16:38:45,557 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-06-05 16:38:45,680 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-06-05 16:38:46,010 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-06-05 16:38:46,176 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-06-05 16:38:46,734 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-06-05 16:38:47,213 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-06-05 16:38:47,513 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2021-06-05 16:38:47,705 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60 [2021-06-05 16:38:48,043 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2021-06-05 16:38:48,283 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2021-06-05 16:38:48,410 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2021-06-05 16:38:48,652 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2021-06-05 16:38:48,862 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2021-06-05 16:38:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:49,484 INFO L93 Difference]: Finished difference Result 3194 states and 9881 transitions. [2021-06-05 16:38:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:38:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:49,489 INFO L225 Difference]: With dead ends: 3194 [2021-06-05 16:38:49,489 INFO L226 Difference]: Without dead ends: 3134 [2021-06-05 16:38:49,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4301.4ms TimeCoverageRelationStatistics Valid=743, Invalid=3039, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 16:38:49,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-06-05 16:38:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1411. [2021-06-05 16:38:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.3453900709219857) internal successors, (4717), 1410 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4717 transitions. [2021-06-05 16:38:49,513 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4717 transitions. Word has length 26 [2021-06-05 16:38:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:49,513 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4717 transitions. [2021-06-05 16:38:49,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4717 transitions. [2021-06-05 16:38:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:49,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:49,515 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:49,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable891 [2021-06-05 16:38:49,715 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:49,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1882815202, now seen corresponding path program 13 times [2021-06-05 16:38:49,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:49,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450369371] [2021-06-05 16:38:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:50,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:50,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450369371] [2021-06-05 16:38:50,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450369371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:50,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061420604] [2021-06-05 16:38:50,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:50,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:38:50,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:50,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:38:50,381 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:50,387 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:50,392 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:50,397 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:50,403 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:38:50,409 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:50,421 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:50,427 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:50,433 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:50,438 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:38:50,443 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:50,449 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:38:50,454 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:38:50,459 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:50,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:38:50,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:38:50,463 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:50,540 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:38:50,542 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:38:50,542 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:38:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:50,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061420604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:50,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:50,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:38:50,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729543870] [2021-06-05 16:38:50,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:38:50,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:38:50,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:38:50,600 INFO L87 Difference]: Start difference. First operand 1411 states and 4717 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:51,701 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2021-06-05 16:38:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:52,326 INFO L93 Difference]: Finished difference Result 1958 states and 6368 transitions. [2021-06-05 16:38:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:38:52,326 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:52,329 INFO L225 Difference]: With dead ends: 1958 [2021-06-05 16:38:52,329 INFO L226 Difference]: Without dead ends: 1943 [2021-06-05 16:38:52,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1692.7ms TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 16:38:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2021-06-05 16:38:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1455. [2021-06-05 16:38:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.343878954607978) internal successors, (4862), 1454 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4862 transitions. [2021-06-05 16:38:52,347 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4862 transitions. Word has length 26 [2021-06-05 16:38:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:52,348 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4862 transitions. [2021-06-05 16:38:52,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4862 transitions. [2021-06-05 16:38:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:52,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:52,350 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:52,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable996 [2021-06-05 16:38:52,550 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:52,550 INFO L82 PathProgramCache]: Analyzing trace with hash 950706158, now seen corresponding path program 14 times [2021-06-05 16:38:52,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:52,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129418728] [2021-06-05 16:38:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:52,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:52,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129418728] [2021-06-05 16:38:52,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129418728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:52,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671178230] [2021-06-05 16:38:52,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:52,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:38:52,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:52,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:38:52,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:38:53,205 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 16:38:53,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:53,297 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 16:38:53,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-06-05 16:38:53,300 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:53,433 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-05 16:38:53,434 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:53,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:53,455 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 16:38:53,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2021-06-05 16:38:53,457 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:53,587 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 16:38:53,587 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:53,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:53,606 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:53,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34 [2021-06-05 16:38:53,611 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:53,733 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 16:38:53,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:53,752 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 16:38:53,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 30 [2021-06-05 16:38:53,754 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:53,871 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 16:38:53,872 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:53,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:53,892 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 16:38:53,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2021-06-05 16:38:53,896 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:54,009 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 16:38:54,010 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:54,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:54,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:54,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 41 [2021-06-05 16:38:54,028 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:54,147 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 16:38:54,147 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:54,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:54,167 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 16:38:54,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-06-05 16:38:54,169 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:54,285 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 16:38:54,285 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:54,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:38:54,302 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:54,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 41 [2021-06-05 16:38:54,304 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:38:54,421 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 16:38:54,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:38:54,436 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:38:54,436 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:445, output treesize:479 [2021-06-05 16:38:54,700 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-06-05 16:38:54,884 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 16:38:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:54,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671178230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:54,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:38:54,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:38:54,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635815025] [2021-06-05 16:38:54,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:38:54,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:38:54,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:38:54,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:38:54,968 INFO L87 Difference]: Start difference. First operand 1455 states and 4862 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:55,760 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 36 [2021-06-05 16:38:56,211 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 44 [2021-06-05 16:38:56,681 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 16:38:57,093 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-05 16:38:57,288 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-05 16:38:57,544 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2021-06-05 16:38:57,871 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 16:38:58,210 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-06-05 16:38:58,449 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2021-06-05 16:38:58,883 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-06-05 16:38:59,088 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2021-06-05 16:38:59,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:38:59,168 INFO L93 Difference]: Finished difference Result 2081 states and 6658 transitions. [2021-06-05 16:38:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 16:38:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:38:59,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:38:59,173 INFO L225 Difference]: With dead ends: 2081 [2021-06-05 16:38:59,173 INFO L226 Difference]: Without dead ends: 2051 [2021-06-05 16:38:59,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4528.3ms TimeCoverageRelationStatistics Valid=271, Invalid=1621, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 16:38:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-05 16:38:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1451. [2021-06-05 16:38:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.3393103448275863) internal successors, (4842), 1450 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4842 transitions. [2021-06-05 16:38:59,193 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4842 transitions. Word has length 26 [2021-06-05 16:38:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:38:59,193 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4842 transitions. [2021-06-05 16:38:59,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:38:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4842 transitions. [2021-06-05 16:38:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:38:59,195 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:38:59,195 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:38:59,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1028,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:59,409 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:38:59,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:38:59,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1764992822, now seen corresponding path program 15 times [2021-06-05 16:38:59,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:38:59,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497469783] [2021-06-05 16:38:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:38:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:38:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:38:59,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:38:59,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497469783] [2021-06-05 16:38:59,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497469783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:38:59,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49503136] [2021-06-05 16:38:59,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:38:59,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:38:59,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:38:59,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:38:59,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:00,049 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:39:00,050 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,063 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:00,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:39:00,065 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,073 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:00,073 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,099 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:00,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 16:39:00,103 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,114 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:00,115 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,124 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:00,125 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,139 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:00,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:39:00,141 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,149 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:39:00,150 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,166 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:39:00,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:39:00,168 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,182 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:00,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:39:00,192 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,201 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:00,202 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,219 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:00,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:39:00,223 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,238 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:39:00,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:39:00,240 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,248 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:00,248 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,264 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:00,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:39:00,266 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,272 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:39:00,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:00,273 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:00,388 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-05 16:39:00,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:00,409 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:00,410 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:769, output treesize:357 [2021-06-05 16:39:00,601 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 16:39:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:00,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49503136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:00,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:00,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 16:39:00,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329195128] [2021-06-05 16:39:00,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:39:00,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:00,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:39:00,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:39:00,710 INFO L87 Difference]: Start difference. First operand 1451 states and 4842 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:01,266 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2021-06-05 16:39:01,727 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2021-06-05 16:39:01,996 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 16:39:02,296 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-06-05 16:39:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:03,205 INFO L93 Difference]: Finished difference Result 2000 states and 6458 transitions. [2021-06-05 16:39:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:39:03,205 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:03,208 INFO L225 Difference]: With dead ends: 2000 [2021-06-05 16:39:03,208 INFO L226 Difference]: Without dead ends: 1985 [2021-06-05 16:39:03,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2489.2ms TimeCoverageRelationStatistics Valid=225, Invalid=1335, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 16:39:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-06-05 16:39:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1452. [2021-06-05 16:39:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.3418332184700206) internal successors, (4849), 1451 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4849 transitions. [2021-06-05 16:39:03,225 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4849 transitions. Word has length 26 [2021-06-05 16:39:03,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:03,225 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4849 transitions. [2021-06-05 16:39:03,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:03,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4849 transitions. [2021-06-05 16:39:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:03,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:03,227 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:03,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1054,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:03,429 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash 505986546, now seen corresponding path program 16 times [2021-06-05 16:39:03,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:03,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52131313] [2021-06-05 16:39:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:03,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:03,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52131313] [2021-06-05 16:39:03,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52131313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:03,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529399019] [2021-06-05 16:39:03,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:03,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:39:03,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:03,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:39:03,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:04,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,041 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:39:04,041 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:04,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2021-06-05 16:39:04,055 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,067 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:39:04,068 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,080 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:04,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2021-06-05 16:39:04,083 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,097 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:04,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-05 16:39:04,099 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,112 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:04,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-06-05 16:39:04,114 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,124 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:39:04,125 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,137 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:04,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-06-05 16:39:04,140 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,152 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:39:04,153 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,163 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:39:04,163 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,176 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:04,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 20 [2021-06-05 16:39:04,177 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,191 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:39:04,192 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:04,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2021-06-05 16:39:04,207 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,217 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:39:04,217 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,229 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:04,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-05 16:39:04,230 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:04,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:04,240 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:04,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:39:04,241 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:04,310 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:04,311 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:04,311 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 16:39:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:04,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529399019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:04,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:04,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:39:04,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130591932] [2021-06-05 16:39:04,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:39:04,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:04,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:39:04,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:39:04,530 INFO L87 Difference]: Start difference. First operand 1452 states and 4849 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:05,252 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2021-06-05 16:39:05,608 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-06-05 16:39:05,802 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2021-06-05 16:39:05,958 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-06-05 16:39:06,149 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-06-05 16:39:06,343 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2021-06-05 16:39:06,567 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51 [2021-06-05 16:39:06,796 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-06-05 16:39:07,149 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-06-05 16:39:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:07,351 INFO L93 Difference]: Finished difference Result 2355 states and 7541 transitions. [2021-06-05 16:39:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 16:39:07,351 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:07,354 INFO L225 Difference]: With dead ends: 2355 [2021-06-05 16:39:07,355 INFO L226 Difference]: Without dead ends: 2325 [2021-06-05 16:39:07,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2929.4ms TimeCoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 16:39:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2021-06-05 16:39:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1465. [2021-06-05 16:39:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions. [2021-06-05 16:39:07,377 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26 [2021-06-05 16:39:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:07,377 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions. [2021-06-05 16:39:07,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions. [2021-06-05 16:39:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:07,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:07,379 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:07,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1106,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:07,589 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:07,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1484642536, now seen corresponding path program 17 times [2021-06-05 16:39:07,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:07,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422721896] [2021-06-05 16:39:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:07,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:07,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422721896] [2021-06-05 16:39:07,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422721896] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:07,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106996003] [2021-06-05 16:39:07,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:07,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:39:07,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:07,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:39:07,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:08,276 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 16:39:08,505 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_46], 2=[A, v_prenex_45]} [2021-06-05 16:39:08,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:08,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:39:08,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:08,624 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-06-05 16:39:08,624 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 16:39:08,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:08,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:08,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:08,629 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:08,670 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:08,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:08,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:08,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:08,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:08,676 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:08,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:08,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:08,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:39:08,681 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:08,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:08,716 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:39:08,716 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 16:39:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:08,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106996003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:08,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:08,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:39:08,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461017715] [2021-06-05 16:39:08,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:39:08,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:08,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:39:08,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:39:08,772 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:09,783 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2021-06-05 16:39:10,120 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 16:39:10,464 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-06-05 16:39:10,653 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-06-05 16:39:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:10,841 INFO L93 Difference]: Finished difference Result 2028 states and 6589 transitions. [2021-06-05 16:39:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:39:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:10,844 INFO L225 Difference]: With dead ends: 2028 [2021-06-05 16:39:10,844 INFO L226 Difference]: Without dead ends: 1998 [2021-06-05 16:39:10,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2279.0ms TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 16:39:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-06-05 16:39:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1468. [2021-06-05 16:39:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.3503749147920927) internal successors, (4915), 1467 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 4915 transitions. [2021-06-05 16:39:10,863 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 4915 transitions. Word has length 26 [2021-06-05 16:39:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:10,863 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 4915 transitions. [2021-06-05 16:39:10,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 4915 transitions. [2021-06-05 16:39:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:10,865 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:10,866 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:11,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1131,59 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:11,066 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash -808425550, now seen corresponding path program 18 times [2021-06-05 16:39:11,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:11,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088219263] [2021-06-05 16:39:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:11,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:11,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088219263] [2021-06-05 16:39:11,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088219263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:11,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119831738] [2021-06-05 16:39:11,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:11,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:39:11,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:11,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:39:11,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:11,724 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 16:39:11,863 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_54, v_prenex_64, v_prenex_58], 6=[A, v_prenex_60, v_prenex_62, v_prenex_56, v_prenex_66]} [2021-06-05 16:39:11,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:11,877 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:11,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:11,879 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:12,198 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 130 [2021-06-05 16:39:12,199 INFO L628 ElimStorePlain]: treesize reduction 272, result has 55.1 percent of original size [2021-06-05 16:39:12,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,212 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:39:12,213 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:12,329 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 16:39:12,330 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,342 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:12,343 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:12,452 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 16:39:12,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,470 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:39:12,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 16:39:12,472 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:12,577 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 16:39:12,577 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 16:39:12,592 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:12,694 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 16:39:12,694 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,706 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:39:12,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 16:39:12,707 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:12,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,815 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:39:12,819 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:12,918 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:12,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:12,928 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:39:12,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-06-05 16:39:12,929 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:13,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:13,021 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:13,021 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:621, output treesize:217 [2021-06-05 16:39:13,177 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 16:39:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:13,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119831738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:13,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:13,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:39:13,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753136078] [2021-06-05 16:39:13,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:39:13,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:13,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:39:13,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:39:13,296 INFO L87 Difference]: Start difference. First operand 1468 states and 4915 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:13,906 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-06-05 16:39:14,448 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 16:39:14,918 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-05 16:39:15,264 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-05 16:39:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:15,484 INFO L93 Difference]: Finished difference Result 1972 states and 6440 transitions. [2021-06-05 16:39:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:39:15,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:15,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:15,486 INFO L225 Difference]: With dead ends: 1972 [2021-06-05 16:39:15,486 INFO L226 Difference]: Without dead ends: 1957 [2021-06-05 16:39:15,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2546.0ms TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:39:15,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-06-05 16:39:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1465. [2021-06-05 16:39:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions. [2021-06-05 16:39:15,506 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26 [2021-06-05 16:39:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:15,506 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions. [2021-06-05 16:39:15,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:15,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions. [2021-06-05 16:39:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:15,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:15,508 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:15,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1141,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:15,721 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:15,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2091148486, now seen corresponding path program 19 times [2021-06-05 16:39:15,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:15,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224093736] [2021-06-05 16:39:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:16,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:16,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224093736] [2021-06-05 16:39:16,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224093736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:16,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569061463] [2021-06-05 16:39:16,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:16,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:39:16,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:16,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:16,530 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:39:16,536 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:16,542 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:16,548 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:39:16,553 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:39:16,559 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:16,565 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:16,571 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:16,577 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:16,582 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:39:16,588 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:39:16,595 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:16,601 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:16,607 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:16,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:16,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:16,612 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:16,683 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:39:16,684 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:39:16,684 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:39:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:16,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569061463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:16,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:16,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:39:16,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603013306] [2021-06-05 16:39:16,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:39:16,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:16,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:39:16,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:39:16,732 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:17,584 INFO L93 Difference]: Finished difference Result 1916 states and 6261 transitions. [2021-06-05 16:39:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 16:39:17,584 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:17,587 INFO L225 Difference]: With dead ends: 1916 [2021-06-05 16:39:17,587 INFO L226 Difference]: Without dead ends: 1895 [2021-06-05 16:39:17,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1076.1ms TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-06-05 16:39:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2021-06-05 16:39:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1506. [2021-06-05 16:39:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.345514950166113) internal successors, (5035), 1505 states have internal predecessors, (5035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5035 transitions. [2021-06-05 16:39:17,604 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5035 transitions. Word has length 26 [2021-06-05 16:39:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:17,604 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5035 transitions. [2021-06-05 16:39:17,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5035 transitions. [2021-06-05 16:39:17,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:17,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:17,606 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:17,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1166 [2021-06-05 16:39:17,808 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:17,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2036009718, now seen corresponding path program 20 times [2021-06-05 16:39:17,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:17,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878228691] [2021-06-05 16:39:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:18,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:18,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878228691] [2021-06-05 16:39:18,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878228691] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:18,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564765054] [2021-06-05 16:39:18,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:18,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:39:18,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:18,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:39:18,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:18,913 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 16:39:18,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36 [2021-06-05 16:39:18,919 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:18,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:18,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 16:39:18,941 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:19,384 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-06-05 16:39:19,384 INFO L628 ElimStorePlain]: treesize reduction 17, result has 95.3 percent of original size [2021-06-05 16:39:19,407 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:19,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2021-06-05 16:39:19,414 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:19,437 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 16:39:19,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29 [2021-06-05 16:39:19,440 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:19,579 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 16:39:19,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:19,606 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 16:39:19,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32 [2021-06-05 16:39:19,608 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:19,630 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 16:39:19,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29 [2021-06-05 16:39:19,634 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:19,768 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 16:39:19,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:19,791 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-05 16:39:19,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 16:39:19,793 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:19,817 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 16:39:19,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 39 [2021-06-05 16:39:19,818 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:19,964 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 16:39:19,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:19,999 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:19,999 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:365, output treesize:746 [2021-06-05 16:39:20,425 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-06-05 16:39:20,712 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-06-05 16:39:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:20,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564765054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:20,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:20,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 16:39:20,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907025017] [2021-06-05 16:39:20,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:39:20,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:20,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:39:20,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:39:20,833 INFO L87 Difference]: Start difference. First operand 1506 states and 5035 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:20,999 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 21 [2021-06-05 16:39:21,145 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2021-06-05 16:39:21,495 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 47 [2021-06-05 16:39:21,794 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 51 [2021-06-05 16:39:22,157 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 50 [2021-06-05 16:39:22,472 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 41 [2021-06-05 16:39:22,687 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 16:39:23,241 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-06-05 16:39:23,370 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2021-06-05 16:39:23,772 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 53 [2021-06-05 16:39:24,054 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-06-05 16:39:24,514 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 61 [2021-06-05 16:39:24,972 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-05 16:39:25,461 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2021-06-05 16:39:25,834 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-05 16:39:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:25,889 INFO L93 Difference]: Finished difference Result 2133 states and 6814 transitions. [2021-06-05 16:39:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 16:39:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:25,893 INFO L225 Difference]: With dead ends: 2133 [2021-06-05 16:39:25,893 INFO L226 Difference]: Without dead ends: 2108 [2021-06-05 16:39:25,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 5870.6ms TimeCoverageRelationStatistics Valid=320, Invalid=1486, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 16:39:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-06-05 16:39:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1529. [2021-06-05 16:39:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 3.352094240837696) internal successors, (5122), 1528 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5122 transitions. [2021-06-05 16:39:25,915 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5122 transitions. Word has length 26 [2021-06-05 16:39:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:25,915 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5122 transitions. [2021-06-05 16:39:25,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5122 transitions. [2021-06-05 16:39:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:25,918 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:25,918 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:26,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1198 [2021-06-05 16:39:26,120 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:26,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2016041692, now seen corresponding path program 21 times [2021-06-05 16:39:26,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:26,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809488524] [2021-06-05 16:39:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:26,384 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2021-06-05 16:39:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:26,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:26,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809488524] [2021-06-05 16:39:26,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809488524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:26,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079655149] [2021-06-05 16:39:26,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:26,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:39:26,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:26,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:39:26,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:26,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:39:26,879 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,887 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:26,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:26,887 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,897 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:26,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:39:26,901 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,911 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:26,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:39:26,916 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,925 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:26,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:39:26,925 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,933 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:26,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:26,934 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,944 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:26,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:39:26,945 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,953 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:26,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:26,954 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,964 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:26,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:39:26,965 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,975 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:26,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:26,978 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,986 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:26,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:26,986 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:26,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:26,996 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:26,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:39:26,998 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:27,011 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:27,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:39:27,013 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:27,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:27,021 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:27,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:27,021 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:27,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:27,030 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:27,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:27,031 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:27,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:27,044 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:27,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:27,045 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:27,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:27,128 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:27,128 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 16:39:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:27,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079655149] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:27,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:27,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 16:39:27,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383792132] [2021-06-05 16:39:27,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:39:27,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:27,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:39:27,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:39:27,325 INFO L87 Difference]: Start difference. First operand 1529 states and 5122 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:28,489 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-06-05 16:39:28,720 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-05 16:39:29,111 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-06-05 16:39:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:29,164 INFO L93 Difference]: Finished difference Result 2011 states and 6582 transitions. [2021-06-05 16:39:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:39:29,165 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:29,167 INFO L225 Difference]: With dead ends: 2011 [2021-06-05 16:39:29,167 INFO L226 Difference]: Without dead ends: 1982 [2021-06-05 16:39:29,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2095.7ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:39:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2021-06-05 16:39:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1532. [2021-06-05 16:39:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.3527106466361856) internal successors, (5133), 1531 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5133 transitions. [2021-06-05 16:39:29,187 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5133 transitions. Word has length 26 [2021-06-05 16:39:29,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:29,188 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5133 transitions. [2021-06-05 16:39:29,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5133 transitions. [2021-06-05 16:39:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:29,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:29,190 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:29,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1278 [2021-06-05 16:39:29,393 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:29,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:29,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1960184130, now seen corresponding path program 22 times [2021-06-05 16:39:29,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:29,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897176833] [2021-06-05 16:39:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:29,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:29,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897176833] [2021-06-05 16:39:29,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897176833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:29,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732327547] [2021-06-05 16:39:29,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:29,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:39:29,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:29,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:39:29,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:30,124 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-06-05 16:39:30,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:30,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:30,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:30,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:39:30,178 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:30,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:30,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:30,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:39:30,183 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:30,285 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2021-06-05 16:39:30,286 INFO L628 ElimStorePlain]: treesize reduction 91, result has 58.6 percent of original size [2021-06-05 16:39:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:30,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:39:30,290 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:30,330 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:30,331 INFO L518 ElimStorePlain]: Eliminatee v_prenex_87 vanished before elimination [2021-06-05 16:39:30,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:30,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:30,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:30,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:30,336 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:30,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:30,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:30,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:30,340 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:30,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:30,375 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:39:30,375 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:272, output treesize:51 [2021-06-05 16:39:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:30,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732327547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:30,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:30,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:39:30,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798138109] [2021-06-05 16:39:30,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:39:30,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:39:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:39:30,431 INFO L87 Difference]: Start difference. First operand 1532 states and 5133 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:30,706 INFO L93 Difference]: Finished difference Result 1607 states and 5324 transitions. [2021-06-05 16:39:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 16:39:30,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:30,708 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 16:39:30,708 INFO L226 Difference]: Without dead ends: 1592 [2021-06-05 16:39:30,708 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 738.7ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:39:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-05 16:39:30,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1538. [2021-06-05 16:39:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 3.3545868575146387) internal successors, (5156), 1537 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 5156 transitions. [2021-06-05 16:39:30,733 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 5156 transitions. Word has length 26 [2021-06-05 16:39:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:30,733 INFO L482 AbstractCegarLoop]: Abstraction has 1538 states and 5156 transitions. [2021-06-05 16:39:30,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 5156 transitions. [2021-06-05 16:39:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:30,735 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:30,735 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:30,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1319,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:30,936 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:30,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:30,937 INFO L82 PathProgramCache]: Analyzing trace with hash -389358530, now seen corresponding path program 23 times [2021-06-05 16:39:30,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:30,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045173328] [2021-06-05 16:39:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:31,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:31,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045173328] [2021-06-05 16:39:31,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045173328] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:31,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769408011] [2021-06-05 16:39:31,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:31,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:39:31,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:31,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 16:39:31,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:31,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:31,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:31,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:39:31,646 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:31,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:31,664 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:39:31,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:39:31,666 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:31,804 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 16:39:31,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:31,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:31,826 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:31,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:39:31,828 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:31,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:31,846 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:31,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:39:31,850 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:31,990 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 16:39:31,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:31,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:32,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:32,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:39:32,010 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:32,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:32,029 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:32,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 16:39:32,030 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:32,280 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-06-05 16:39:32,280 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.9 percent of original size [2021-06-05 16:39:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:32,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:32,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 16:39:32,301 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:32,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:32,316 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:39:32,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:39:32,317 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:32,547 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-06-05 16:39:32,548 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.5 percent of original size [2021-06-05 16:39:32,564 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:32,564 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:259 [2021-06-05 16:39:32,739 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 16:39:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:32,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769408011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:32,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:32,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:39:32,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309534556] [2021-06-05 16:39:32,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:39:32,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:32,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:39:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:39:32,833 INFO L87 Difference]: Start difference. First operand 1538 states and 5156 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:33,676 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-06-05 16:39:34,383 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-06-05 16:39:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:34,436 INFO L93 Difference]: Finished difference Result 2227 states and 7222 transitions. [2021-06-05 16:39:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:39:34,436 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:34,439 INFO L225 Difference]: With dead ends: 2227 [2021-06-05 16:39:34,439 INFO L226 Difference]: Without dead ends: 2177 [2021-06-05 16:39:34,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1804.2ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 16:39:34,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2021-06-05 16:39:34,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1545. [2021-06-05 16:39:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 3.3588082901554404) internal successors, (5186), 1544 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5186 transitions. [2021-06-05 16:39:34,460 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5186 transitions. Word has length 26 [2021-06-05 16:39:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:34,460 INFO L482 AbstractCegarLoop]: Abstraction has 1545 states and 5186 transitions. [2021-06-05 16:39:34,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5186 transitions. [2021-06-05 16:39:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:34,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:34,462 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:34,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1330 [2021-06-05 16:39:34,662 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:34,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1800748254, now seen corresponding path program 24 times [2021-06-05 16:39:34,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:34,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74468338] [2021-06-05 16:39:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:35,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:35,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74468338] [2021-06-05 16:39:35,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74468338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:35,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587716792] [2021-06-05 16:39:35,087 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:35,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:39:35,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:35,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:39:35,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:35,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,312 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:35,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,320 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:39:35,321 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,328 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:35,329 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,339 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:35,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:35,341 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:35,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:39:35,355 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,363 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:35,363 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,376 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:35,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:35,377 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,387 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:35,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:39:35,388 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,396 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:39:35,397 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,408 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:35,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:39:35,411 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,420 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:35,420 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,434 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:35,435 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,445 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:35,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:39:35,447 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,456 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:35,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:39:35,458 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,467 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:35,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:39:35,468 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:35,473 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:35,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:35,474 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:35,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:35,542 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:35,542 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 16:39:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:35,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587716792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:35,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:35,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:39:35,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574961198] [2021-06-05 16:39:35,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:39:35,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:39:35,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:39:35,721 INFO L87 Difference]: Start difference. First operand 1545 states and 5186 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:36,351 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-06-05 16:39:36,932 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-06-05 16:39:37,073 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-06-05 16:39:37,245 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 16:39:37,468 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 16:39:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:37,537 INFO L93 Difference]: Finished difference Result 2071 states and 6812 transitions. [2021-06-05 16:39:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 16:39:37,538 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:37,541 INFO L225 Difference]: With dead ends: 2071 [2021-06-05 16:39:37,541 INFO L226 Difference]: Without dead ends: 2052 [2021-06-05 16:39:37,541 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2103.1ms TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:39:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2021-06-05 16:39:37,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1557. [2021-06-05 16:39:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 3.3618251928020566) internal successors, (5231), 1556 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:37,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 5231 transitions. [2021-06-05 16:39:37,560 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 5231 transitions. Word has length 26 [2021-06-05 16:39:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:37,560 INFO L482 AbstractCegarLoop]: Abstraction has 1557 states and 5231 transitions. [2021-06-05 16:39:37,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 5231 transitions. [2021-06-05 16:39:37,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:37,562 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:37,562 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:37,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1386 [2021-06-05 16:39:37,763 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:37,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1506727430, now seen corresponding path program 25 times [2021-06-05 16:39:37,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:37,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394464365] [2021-06-05 16:39:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:38,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:38,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394464365] [2021-06-05 16:39:38,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394464365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:38,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087105215] [2021-06-05 16:39:38,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:39:38,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:38,521 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-06-05 16:39:38,615 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_98], 3=[A, v_prenex_100], 6=[v_prenex_99]} [2021-06-05 16:39:38,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,628 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:38,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:38,630 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:38,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:38,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:38,642 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:38,796 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 16:39:38,797 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,811 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:38,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:39:38,812 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:38,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,823 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:39:38,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-06-05 16:39:38,825 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:38,956 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 16:39:38,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,969 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:39:38,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 16:39:38,970 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:38,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:38,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:38,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 16:39:38,999 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:39,111 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 16:39:39,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:39,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:39,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:39,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:39,133 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:39:39,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 16:39:39,134 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:39,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:39,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:39,143 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:39,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:39:39,147 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:39,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:39,256 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:39,257 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:375, output treesize:228 [2021-06-05 16:39:39,429 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-06-05 16:39:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:39,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087105215] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:39,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:39,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:39:39,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733222948] [2021-06-05 16:39:39,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:39:39,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:39,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:39:39,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:39:39,523 INFO L87 Difference]: Start difference. First operand 1557 states and 5231 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:40,076 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-06-05 16:39:40,342 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-06-05 16:39:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:40,859 INFO L93 Difference]: Finished difference Result 2052 states and 6751 transitions. [2021-06-05 16:39:40,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 16:39:40,859 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:40,862 INFO L225 Difference]: With dead ends: 2052 [2021-06-05 16:39:40,862 INFO L226 Difference]: Without dead ends: 2027 [2021-06-05 16:39:40,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1755.0ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-06-05 16:39:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-06-05 16:39:40,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1563. [2021-06-05 16:39:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 3.360435339308579) internal successors, (5249), 1562 states have internal predecessors, (5249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 5249 transitions. [2021-06-05 16:39:40,880 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 5249 transitions. Word has length 26 [2021-06-05 16:39:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:40,881 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 5249 transitions. [2021-06-05 16:39:40,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:40,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 5249 transitions. [2021-06-05 16:39:40,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:40,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:40,883 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:41,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1403 [2021-06-05 16:39:41,083 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:41,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:41,083 INFO L82 PathProgramCache]: Analyzing trace with hash -132958662, now seen corresponding path program 42 times [2021-06-05 16:39:41,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:41,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387914839] [2021-06-05 16:39:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:41,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:41,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387914839] [2021-06-05 16:39:41,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387914839] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:41,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604326972] [2021-06-05 16:39:41,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:41,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:39:41,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:41,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 16:39:41,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:41,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 16:39:41,802 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 16:39:41,810 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:39:41,817 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 16:39:41,825 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:39:41,833 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 16:39:41,841 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 16:39:41,849 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:39:41,857 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 16:39:41,865 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 16:39:41,872 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 16:39:41,880 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 16:39:41,888 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 16:39:41,895 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-05 16:39:41,903 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-05 16:39:41,910 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:41,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:41,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:39:41,914 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:41,948 INFO L628 ElimStorePlain]: treesize reduction 21, result has 65.0 percent of original size [2021-06-05 16:39:41,948 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:39:41,949 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:809, output treesize:39 [2021-06-05 16:39:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:42,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604326972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:42,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:42,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 16:39:42,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897611729] [2021-06-05 16:39:42,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:39:42,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:42,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:39:42,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:39:42,007 INFO L87 Difference]: Start difference. First operand 1563 states and 5249 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:42,969 INFO L93 Difference]: Finished difference Result 2040 states and 6673 transitions. [2021-06-05 16:39:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 16:39:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:42,972 INFO L225 Difference]: With dead ends: 2040 [2021-06-05 16:39:42,972 INFO L226 Difference]: Without dead ends: 2014 [2021-06-05 16:39:42,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1253.1ms TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:39:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-06-05 16:39:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1579. [2021-06-05 16:39:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions. [2021-06-05 16:39:42,990 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26 [2021-06-05 16:39:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:42,990 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions. [2021-06-05 16:39:42,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions. [2021-06-05 16:39:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:42,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:42,992 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:43,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1436,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:43,193 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:43,193 INFO L82 PathProgramCache]: Analyzing trace with hash 934915902, now seen corresponding path program 43 times [2021-06-05 16:39:43,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:43,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203471294] [2021-06-05 16:39:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:43,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:43,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203471294] [2021-06-05 16:39:43,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203471294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:43,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279339380] [2021-06-05 16:39:43,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:43,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:39:43,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:43,907 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_103], 5=[v_prenex_101, v_prenex_105]} [2021-06-05 16:39:43,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:43,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:43,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:43,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:43,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 16:39:43,915 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:43,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:43,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:43,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:43,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:39:43,921 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:44,006 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size [2021-06-05 16:39:44,006 INFO L518 ElimStorePlain]: Eliminatee v_prenex_103 vanished before elimination [2021-06-05 16:39:44,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:44,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:44,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:44,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 16:39:44,011 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:44,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:44,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:44,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 16:39:44,040 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:44,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:44,065 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 16:39:44,065 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:33 [2021-06-05 16:39:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:44,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279339380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:44,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:44,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 16:39:44,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038153880] [2021-06-05 16:39:44,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:39:44,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:39:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:39:44,108 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:46,468 INFO L93 Difference]: Finished difference Result 2239 states and 7310 transitions. [2021-06-05 16:39:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 16:39:46,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:46,472 INFO L225 Difference]: With dead ends: 2239 [2021-06-05 16:39:46,472 INFO L226 Difference]: Without dead ends: 2224 [2021-06-05 16:39:46,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2535.0ms TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 16:39:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-06-05 16:39:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1579. [2021-06-05 16:39:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions. [2021-06-05 16:39:46,494 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26 [2021-06-05 16:39:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:46,494 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions. [2021-06-05 16:39:46,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions. [2021-06-05 16:39:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:46,496 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:46,496 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:46,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1455 [2021-06-05 16:39:46,696 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:46,696 INFO L82 PathProgramCache]: Analyzing trace with hash 346540478, now seen corresponding path program 26 times [2021-06-05 16:39:46,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:46,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808889341] [2021-06-05 16:39:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:47,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:47,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808889341] [2021-06-05 16:39:47,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808889341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:47,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116739389] [2021-06-05 16:39:47,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:47,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:39:47,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:47,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:39:47,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,341 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:47,341 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,348 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:39:47,349 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,357 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:47,357 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,367 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:47,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:47,369 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,378 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:47,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:39:47,387 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,395 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:47,395 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,405 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:47,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:39:47,406 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,416 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:47,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:39:47,417 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,425 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:39:47,426 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:47,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:39:47,439 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,447 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:39:47,448 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,455 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:39:47,456 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,466 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:47,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:39:47,467 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,476 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:47,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:39:47,478 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,502 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:39:47,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:39:47,504 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:47,509 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:39:47,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:39:47,509 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:47,576 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:47,577 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:47,578 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 16:39:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:47,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116739389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:47,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:47,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:39:47,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943521276] [2021-06-05 16:39:47,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:39:47,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:47,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:39:47,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:39:47,752 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:49,239 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-06-05 16:39:49,410 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2021-06-05 16:39:49,725 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-06-05 16:39:49,942 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-05 16:39:50,224 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2021-06-05 16:39:50,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:50,282 INFO L93 Difference]: Finished difference Result 2206 states and 7151 transitions. [2021-06-05 16:39:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:39:50,282 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:50,285 INFO L225 Difference]: With dead ends: 2206 [2021-06-05 16:39:50,285 INFO L226 Difference]: Without dead ends: 2187 [2021-06-05 16:39:50,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2652.3ms TimeCoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 16:39:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-06-05 16:39:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1585. [2021-06-05 16:39:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions. [2021-06-05 16:39:50,306 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26 [2021-06-05 16:39:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:50,306 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions. [2021-06-05 16:39:50,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions. [2021-06-05 16:39:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:50,308 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:50,308 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:50,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1469,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:50,508 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:50,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1896922042, now seen corresponding path program 44 times [2021-06-05 16:39:50,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:50,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480402366] [2021-06-05 16:39:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:50,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:50,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480402366] [2021-06-05 16:39:50,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480402366] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:50,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345516358] [2021-06-05 16:39:50,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 16:39:50,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:39:50,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:50,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 16:39:50,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:51,353 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-05 16:39:51,659 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_118, A], 5=[v_prenex_120, v_prenex_116]} [2021-06-05 16:39:51,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:51,687 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:39:51,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:39:51,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:51,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:51,704 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:51,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:39:51,709 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:51,868 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 16:39:51,869 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:51,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:51,899 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:51,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:39:51,901 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:51,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:51,919 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:51,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:39:51,922 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:52,096 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 16:39:52,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:52,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:52,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:52,117 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:39:52,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 16:39:52,118 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:52,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:52,131 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:52,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 16:39:52,136 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:52,267 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 16:39:52,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:52,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:52,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:52,289 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:52,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 16:39:52,290 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:52,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:39:52,307 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:39:52,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 16:39:52,309 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:52,425 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 16:39:52,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:52,436 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:39:52,436 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:393, output treesize:161 [2021-06-05 16:39:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:52,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345516358] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:52,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:52,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:39:52,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830550981] [2021-06-05 16:39:52,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 16:39:52,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:52,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 16:39:52,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-06-05 16:39:52,575 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:53,205 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2021-06-05 16:39:54,922 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2021-06-05 16:39:55,376 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-06-05 16:39:55,528 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-06-05 16:39:56,110 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-06-05 16:39:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:39:56,508 INFO L93 Difference]: Finished difference Result 2573 states and 8159 transitions. [2021-06-05 16:39:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 16:39:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:39:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:39:56,511 INFO L225 Difference]: With dead ends: 2573 [2021-06-05 16:39:56,511 INFO L226 Difference]: Without dead ends: 2529 [2021-06-05 16:39:56,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 4088.4ms TimeCoverageRelationStatistics Valid=671, Invalid=3361, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 16:39:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2021-06-05 16:39:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 1585. [2021-06-05 16:39:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions. [2021-06-05 16:39:56,533 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26 [2021-06-05 16:39:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:39:56,533 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions. [2021-06-05 16:39:56,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions. [2021-06-05 16:39:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:39:56,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:39:56,535 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:39:56,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1486 [2021-06-05 16:39:56,736 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:39:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:39:56,736 INFO L82 PathProgramCache]: Analyzing trace with hash 920603198, now seen corresponding path program 45 times [2021-06-05 16:39:56,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:39:56,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386732843] [2021-06-05 16:39:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:39:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:39:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:57,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:39:57,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386732843] [2021-06-05 16:39:57,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386732843] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:57,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851211945] [2021-06-05 16:39:57,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:39:57,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:39:57,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:39:57,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:39:57,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:39:57,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,718 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 16:39:57,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33 [2021-06-05 16:39:57,722 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,747 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:39:57,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2021-06-05 16:39:57,753 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,777 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 16:39:57,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2021-06-05 16:39:57,779 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,803 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 16:39:57,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:39:57,805 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,822 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 16:39:57,823 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,839 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:39:57,840 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,856 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:39:57,857 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,873 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 16:39:57,874 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,897 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 16:39:57,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-05 16:39:57,899 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,924 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 16:39:57,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 25 [2021-06-05 16:39:57,925 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,943 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1 [2021-06-05 16:39:57,943 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,960 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:39:57,961 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,976 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:39:57,977 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,992 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:57,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:39:57,993 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:57,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:57,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:58,007 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:39:58,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 16:39:58,008 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:58,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:58,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:58,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:39:58,023 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 16:39:58,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 25 [2021-06-05 16:39:58,025 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:39:58,140 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-06-05 16:39:58,141 INFO L628 ElimStorePlain]: treesize reduction 76, result has 67.7 percent of original size [2021-06-05 16:39:58,143 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:39:58,143 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:953, output treesize:180 [2021-06-05 16:39:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:39:58,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851211945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:39:58,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:39:58,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-06-05 16:39:58,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126457168] [2021-06-05 16:39:58,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 16:39:58,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:39:58,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 16:39:58,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-06-05 16:39:58,281 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:39:59,386 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-05 16:39:59,804 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-05 16:40:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:01,183 INFO L93 Difference]: Finished difference Result 3102 states and 9804 transitions. [2021-06-05 16:40:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 16:40:01,183 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:01,187 INFO L225 Difference]: With dead ends: 3102 [2021-06-05 16:40:01,187 INFO L226 Difference]: Without dead ends: 3072 [2021-06-05 16:40:01,187 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 2913.2ms TimeCoverageRelationStatistics Valid=533, Invalid=3007, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:40:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-06-05 16:40:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1645. [2021-06-05 16:40:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 3.3619221411192215) internal successors, (5527), 1644 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 5527 transitions. [2021-06-05 16:40:01,212 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 5527 transitions. Word has length 26 [2021-06-05 16:40:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:01,212 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 5527 transitions. [2021-06-05 16:40:01,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 5527 transitions. [2021-06-05 16:40:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:01,214 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:01,214 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:01,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1554 [2021-06-05 16:40:01,417 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:01,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2122915566, now seen corresponding path program 46 times [2021-06-05 16:40:01,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:01,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039959102] [2021-06-05 16:40:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:01,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:01,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039959102] [2021-06-05 16:40:01,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039959102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:01,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918889864] [2021-06-05 16:40:01,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:01,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:40:01,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:01,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:40:01,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 16:40:02,440 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:40:02,448 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 16:40:02,456 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:40:02,467 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:40:02,475 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:40:02,483 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:40:02,491 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:40:02,498 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:40:02,506 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:40:02,529 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:40:02,538 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 16:40:02,546 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:40:02,554 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:40:02,561 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:02,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:02,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 16:40:02,566 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:02,591 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-05 16:40:02,592 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:40:02,592 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 16:40:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:02,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918889864] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:02,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:02,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2021-06-05 16:40:02,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139928895] [2021-06-05 16:40:02,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:40:02,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:02,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:40:02,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:40:02,612 INFO L87 Difference]: Start difference. First operand 1645 states and 5527 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:04,202 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2021-06-05 16:40:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:04,849 INFO L93 Difference]: Finished difference Result 3253 states and 10418 transitions. [2021-06-05 16:40:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 16:40:04,849 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:04,854 INFO L225 Difference]: With dead ends: 3253 [2021-06-05 16:40:04,854 INFO L226 Difference]: Without dead ends: 3217 [2021-06-05 16:40:04,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2117.2ms TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 16:40:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-06-05 16:40:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1763. [2021-06-05 16:40:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 3.388195232690125) internal successors, (5970), 1762 states have internal predecessors, (5970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5970 transitions. [2021-06-05 16:40:04,886 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5970 transitions. Word has length 26 [2021-06-05 16:40:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:04,886 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 5970 transitions. [2021-06-05 16:40:04,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5970 transitions. [2021-06-05 16:40:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:04,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:04,888 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:05,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1660 [2021-06-05 16:40:05,089 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:05,089 INFO L82 PathProgramCache]: Analyzing trace with hash -338403078, now seen corresponding path program 47 times [2021-06-05 16:40:05,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:05,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913758898] [2021-06-05 16:40:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:05,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:05,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913758898] [2021-06-05 16:40:05,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913758898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:05,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232865383] [2021-06-05 16:40:05,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:05,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:40:05,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:05,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:40:05,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,055 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 16:40:06,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 16:40:06,057 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,084 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 16:40:06,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2021-06-05 16:40:06,085 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,113 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 16:40:06,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 16:40:06,117 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,142 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 16:40:06,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-05 16:40:06,143 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,168 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 16:40:06,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-05 16:40:06,169 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,186 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:40:06,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 16:40:06,187 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,214 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 16:40:06,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 16:40:06,218 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,243 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 16:40:06,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:40:06,244 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,267 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:06,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 16:40:06,273 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,296 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 16:40:06,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 16:40:06,298 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,321 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 16:40:06,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-05 16:40:06,322 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,354 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 16:40:06,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 25 [2021-06-05 16:40:06,355 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,369 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:40:06,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:40:06,370 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,384 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:40:06,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:40:06,384 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,398 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:40:06,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 16:40:06,399 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:06,407 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:40:06,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:40:06,408 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:06,512 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2021-06-05 16:40:06,512 INFO L628 ElimStorePlain]: treesize reduction 163, result has 39.9 percent of original size [2021-06-05 16:40:06,514 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:40:06,514 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:90 [2021-06-05 16:40:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:06,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232865383] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:06,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:06,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2021-06-05 16:40:06,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101375595] [2021-06-05 16:40:06,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:40:06,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:06,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:40:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:40:06,591 INFO L87 Difference]: Start difference. First operand 1763 states and 5970 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:08,751 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 16:40:09,255 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-06-05 16:40:09,462 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2021-06-05 16:40:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:09,686 INFO L93 Difference]: Finished difference Result 3738 states and 11851 transitions. [2021-06-05 16:40:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 16:40:09,690 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:09,695 INFO L225 Difference]: With dead ends: 3738 [2021-06-05 16:40:09,695 INFO L226 Difference]: Without dead ends: 3681 [2021-06-05 16:40:09,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 2985.2ms TimeCoverageRelationStatistics Valid=639, Invalid=2553, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 16:40:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-06-05 16:40:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1801. [2021-06-05 16:40:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 3.397777777777778) internal successors, (6116), 1800 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 6116 transitions. [2021-06-05 16:40:09,731 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 6116 transitions. Word has length 26 [2021-06-05 16:40:09,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:09,731 INFO L482 AbstractCegarLoop]: Abstraction has 1801 states and 6116 transitions. [2021-06-05 16:40:09,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:09,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 6116 transitions. [2021-06-05 16:40:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:09,733 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:09,733 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:09,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1766,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:09,937 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:09,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1512099618, now seen corresponding path program 27 times [2021-06-05 16:40:09,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:09,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901376016] [2021-06-05 16:40:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:10,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:10,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901376016] [2021-06-05 16:40:10,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901376016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:10,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51037247] [2021-06-05 16:40:10,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:10,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:40:10,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:10,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:40:10,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:10,886 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 16:40:11,106 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 16:40:11,235 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:40:11,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:40:11,237 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:11,377 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 16:40:11,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:11,400 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:11,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:40:11,403 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:11,531 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 16:40:11,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:11,551 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:40:11,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:40:11,552 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:11,696 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 16:40:11,697 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:11,720 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:40:11,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:40:11,726 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:11,850 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 16:40:11,851 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:11,865 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:11,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:40:11,869 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:11,991 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 16:40:11,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:12,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:12,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:40:12,008 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:12,146 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 16:40:12,146 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:12,164 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:40:12,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 16:40:12,168 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:12,287 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 16:40:12,287 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:12,303 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:40:12,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:40:12,304 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:12,420 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 16:40:12,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:12,434 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:40:12,434 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:365, output treesize:357 [2021-06-05 16:40:12,651 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-06-05 16:40:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:12,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51037247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:12,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:12,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 16:40:12,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887309252] [2021-06-05 16:40:12,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:40:12,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:40:12,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:40:12,768 INFO L87 Difference]: Start difference. First operand 1801 states and 6116 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:13,637 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-06-05 16:40:13,843 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-06-05 16:40:14,079 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-06-05 16:40:14,345 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 16:40:14,572 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 16:40:14,820 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-06-05 16:40:15,303 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2021-06-05 16:40:15,706 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2021-06-05 16:40:16,294 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 67 [2021-06-05 16:40:16,759 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2021-06-05 16:40:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:16,915 INFO L93 Difference]: Finished difference Result 2391 states and 7895 transitions. [2021-06-05 16:40:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 16:40:16,916 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:16,919 INFO L225 Difference]: With dead ends: 2391 [2021-06-05 16:40:16,919 INFO L226 Difference]: Without dead ends: 2361 [2021-06-05 16:40:16,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 4564.2ms TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 16:40:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-06-05 16:40:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1809. [2021-06-05 16:40:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 3.396017699115044) internal successors, (6140), 1808 states have internal predecessors, (6140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 6140 transitions. [2021-06-05 16:40:16,943 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 6140 transitions. Word has length 26 [2021-06-05 16:40:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:16,943 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 6140 transitions. [2021-06-05 16:40:16,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 6140 transitions. [2021-06-05 16:40:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:16,945 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:16,945 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:17,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1865 [2021-06-05 16:40:17,161 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash -105433162, now seen corresponding path program 28 times [2021-06-05 16:40:17,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:17,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556469626] [2021-06-05 16:40:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:17,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:17,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556469626] [2021-06-05 16:40:17,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556469626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:17,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74494348] [2021-06-05 16:40:17,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:17,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:40:17,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:17,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:40:17,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:17,915 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 16:40:17,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:17,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:17,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:40:17,975 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,085 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 16:40:18,085 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:18,132 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:40:18,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:40:18,134 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,238 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 16:40:18,239 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:18,250 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:40:18,254 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:18,366 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:40:18,368 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,469 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 16:40:18,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:18,481 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:40:18,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:40:18,482 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:18,590 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:40:18,591 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,688 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:18,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:40:18,699 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,792 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:18,803 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:40:18,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:40:18,804 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:18,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:18,899 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:40:18,899 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 16:40:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:19,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74494348] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:19,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:19,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:40:19,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019610149] [2021-06-05 16:40:19,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:40:19,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:40:19,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:40:19,084 INFO L87 Difference]: Start difference. First operand 1809 states and 6140 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:19,391 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-05 16:40:19,905 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-06-05 16:40:20,299 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2021-06-05 16:40:20,469 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-05 16:40:20,729 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 16:40:21,207 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 16:40:21,398 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-05 16:40:21,632 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-05 16:40:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:21,730 INFO L93 Difference]: Finished difference Result 2637 states and 8679 transitions. [2021-06-05 16:40:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 16:40:21,730 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:21,734 INFO L225 Difference]: With dead ends: 2637 [2021-06-05 16:40:21,734 INFO L226 Difference]: Without dead ends: 2603 [2021-06-05 16:40:21,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2895.4ms TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 16:40:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-05 16:40:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1822. [2021-06-05 16:40:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions. [2021-06-05 16:40:21,761 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26 [2021-06-05 16:40:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:21,761 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions. [2021-06-05 16:40:21,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions. [2021-06-05 16:40:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:21,764 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:21,764 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:21,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1892 [2021-06-05 16:40:21,964 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:21,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1795376066, now seen corresponding path program 29 times [2021-06-05 16:40:21,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:21,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738624440] [2021-06-05 16:40:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:22,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:22,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738624440] [2021-06-05 16:40:22,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738624440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:22,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7373267] [2021-06-05 16:40:22,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:22,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:40:22,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:22,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:40:22,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:22,748 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_156, v_prenex_158], 6=[v_prenex_157]} [2021-06-05 16:40:22,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:22,770 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:40:22,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:40:22,773 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:22,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:22,792 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:40:22,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:40:22,793 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:22,938 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 16:40:22,938 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:22,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:22,955 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:22,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:40:22,960 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:22,977 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:40:22,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:40:22,979 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:23,119 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 16:40:23,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:23,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:23,137 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:23,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:40:23,141 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:23,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:23,159 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:40:23,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 16:40:23,160 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:23,431 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2021-06-05 16:40:23,431 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.4 percent of original size [2021-06-05 16:40:23,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:23,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:23,451 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:40:23,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:40:23,452 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:23,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:23,465 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:23,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 16:40:23,469 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:23,720 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-05 16:40:23,721 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.8 percent of original size [2021-06-05 16:40:23,744 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:40:23,744 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:373, output treesize:323 [2021-06-05 16:40:23,945 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-06-05 16:40:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:24,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7373267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:24,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:24,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:40:24,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192894601] [2021-06-05 16:40:24,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:40:24,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:40:24,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:40:24,042 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:24,183 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 27 [2021-06-05 16:40:24,959 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2021-06-05 16:40:26,095 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2021-06-05 16:40:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:26,141 INFO L93 Difference]: Finished difference Result 2416 states and 8045 transitions. [2021-06-05 16:40:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:40:26,141 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:26,144 INFO L225 Difference]: With dead ends: 2416 [2021-06-05 16:40:26,144 INFO L226 Difference]: Without dead ends: 2391 [2021-06-05 16:40:26,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2279.1ms TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 16:40:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-06-05 16:40:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1822. [2021-06-05 16:40:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions. [2021-06-05 16:40:26,166 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26 [2021-06-05 16:40:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:26,167 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions. [2021-06-05 16:40:26,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions. [2021-06-05 16:40:26,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:26,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:26,169 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:26,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1908 [2021-06-05 16:40:26,369 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:26,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:26,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1102392532, now seen corresponding path program 48 times [2021-06-05 16:40:26,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:26,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334234505] [2021-06-05 16:40:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:26,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:26,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334234505] [2021-06-05 16:40:26,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334234505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:26,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192256127] [2021-06-05 16:40:26,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:26,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:40:26,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:26,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:40:26,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:27,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 16:40:27,288 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:40:27,297 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 16:40:27,305 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 16:40:27,313 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2021-06-05 16:40:27,322 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:40:27,331 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 16:40:27,340 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 19 [2021-06-05 16:40:27,348 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 16:40:27,357 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:40:27,366 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:40:27,374 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:40:27,382 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 16:40:27,390 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:40:27,398 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:40:27,406 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:27,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:27,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:40:27,420 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:27,473 INFO L628 ElimStorePlain]: treesize reduction 223, result has 12.9 percent of original size [2021-06-05 16:40:27,474 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:40:27,474 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:21 [2021-06-05 16:40:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:27,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192256127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:27,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:27,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 16:40:27,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736149191] [2021-06-05 16:40:27,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:40:27,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:27,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:40:27,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:40:27,503 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:28,014 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2021-06-05 16:40:29,135 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-06-05 16:40:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:29,194 INFO L93 Difference]: Finished difference Result 2280 states and 7549 transitions. [2021-06-05 16:40:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 16:40:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:29,198 INFO L225 Difference]: With dead ends: 2280 [2021-06-05 16:40:29,198 INFO L226 Difference]: Without dead ends: 2258 [2021-06-05 16:40:29,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1891.5ms TimeCoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 16:40:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2021-06-05 16:40:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1818. [2021-06-05 16:40:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions. [2021-06-05 16:40:29,219 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26 [2021-06-05 16:40:29,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:29,219 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions. [2021-06-05 16:40:29,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions. [2021-06-05 16:40:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:29,222 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:29,222 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:29,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1964 [2021-06-05 16:40:29,422 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2027886398, now seen corresponding path program 49 times [2021-06-05 16:40:29,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:29,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928701306] [2021-06-05 16:40:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:29,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:29,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928701306] [2021-06-05 16:40:29,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928701306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:29,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879072266] [2021-06-05 16:40:29,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:29,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:40:29,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:30,218 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_161], 5=[v_prenex_163, v_prenex_159]} [2021-06-05 16:40:30,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:30,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:30,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:30,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:30,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 16:40:30,226 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:30,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:30,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:30,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:30,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:40:30,232 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:30,308 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size [2021-06-05 16:40:30,309 INFO L518 ElimStorePlain]: Eliminatee v_prenex_161 vanished before elimination [2021-06-05 16:40:30,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:30,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 16:40:30,312 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:30,338 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:30,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:30,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:30,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:30,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:40:30,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 16:40:30,344 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:30,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:30,368 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 16:40:30,368 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:43 [2021-06-05 16:40:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:30,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879072266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:30,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:30,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 16:40:30,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321811266] [2021-06-05 16:40:30,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:40:30,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:30,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:40:30,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:40:30,415 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:30,978 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2021-06-05 16:40:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:32,326 INFO L93 Difference]: Finished difference Result 2473 states and 8184 transitions. [2021-06-05 16:40:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 16:40:32,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:32,330 INFO L225 Difference]: With dead ends: 2473 [2021-06-05 16:40:32,330 INFO L226 Difference]: Without dead ends: 2458 [2021-06-05 16:40:32,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2060.7ms TimeCoverageRelationStatistics Valid=327, Invalid=1313, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 16:40:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-06-05 16:40:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1818. [2021-06-05 16:40:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions. [2021-06-05 16:40:32,353 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26 [2021-06-05 16:40:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:32,353 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions. [2021-06-05 16:40:32,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions. [2021-06-05 16:40:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:32,355 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:32,355 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:32,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2054,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:32,556 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:32,556 INFO L82 PathProgramCache]: Analyzing trace with hash 849981858, now seen corresponding path program 50 times [2021-06-05 16:40:32,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:32,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828173576] [2021-06-05 16:40:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:32,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:32,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828173576] [2021-06-05 16:40:32,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828173576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:32,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850080695] [2021-06-05 16:40:32,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:32,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:40:32,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:32,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 16:40:32,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:33,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,546 INFO L354 Elim1Store]: treesize reduction 20, result has 55.6 percent of original size [2021-06-05 16:40:33,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 40 [2021-06-05 16:40:33,548 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,591 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:40:33,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 16:40:33,600 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,649 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 16:40:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-05 16:40:33,652 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,709 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:40:33,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 55 [2021-06-05 16:40:33,716 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,763 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:40:33,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-05 16:40:33,766 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,819 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:40:33,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 16:40:33,825 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,876 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:40:33,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 16:40:33,886 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,932 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 16:40:33,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 16:40:33,935 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:33,970 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:33,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57 [2021-06-05 16:40:33,989 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:33,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:34,038 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:40:34,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 16:40:34,044 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:34,082 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:34,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 63 [2021-06-05 16:40:34,094 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:34,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:34,145 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:40:34,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 16:40:34,151 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:34,190 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:34,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:40:34,191 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:34,211 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:34,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:40:34,212 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:34,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:34,250 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-05 16:40:34,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 37 [2021-06-05 16:40:34,251 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:34,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:34,264 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:34,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 16:40:34,264 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:34,717 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2021-06-05 16:40:34,718 INFO L628 ElimStorePlain]: treesize reduction 411, result has 45.1 percent of original size [2021-06-05 16:40:34,725 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:40:34,725 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:945, output treesize:389 [2021-06-05 16:40:34,991 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-06-05 16:40:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:35,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850080695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:35,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:35,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-06-05 16:40:35,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932341946] [2021-06-05 16:40:35,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 16:40:35,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:35,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 16:40:35,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-05 16:40:35,109 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:35,775 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2021-06-05 16:40:36,316 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-06-05 16:40:36,798 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-06-05 16:40:37,020 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-06-05 16:40:37,329 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-05 16:40:37,910 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-06-05 16:40:38,490 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-05 16:40:38,795 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2021-06-05 16:40:39,006 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-05 16:40:39,232 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-06-05 16:40:39,413 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-06-05 16:40:39,858 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-06-05 16:40:40,128 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-05 16:40:40,368 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 16:40:40,864 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 16:40:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:41,582 INFO L93 Difference]: Finished difference Result 3328 states and 10546 transitions. [2021-06-05 16:40:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 16:40:41,582 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:41,587 INFO L225 Difference]: With dead ends: 3328 [2021-06-05 16:40:41,587 INFO L226 Difference]: Without dead ends: 3272 [2021-06-05 16:40:41,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 6251.2ms TimeCoverageRelationStatistics Valid=856, Invalid=4400, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 16:40:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-06-05 16:40:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1831. [2021-06-05 16:40:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 3.40327868852459) internal successors, (6228), 1830 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 6228 transitions. [2021-06-05 16:40:41,616 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 6228 transitions. Word has length 26 [2021-06-05 16:40:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:41,616 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 6228 transitions. [2021-06-05 16:40:41,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 6228 transitions. [2021-06-05 16:40:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:41,618 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:41,618 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:41,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2068 [2021-06-05 16:40:41,820 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:41,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1044384706, now seen corresponding path program 51 times [2021-06-05 16:40:41,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:41,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032497656] [2021-06-05 16:40:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:42,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:42,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032497656] [2021-06-05 16:40:42,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032497656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:42,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792855676] [2021-06-05 16:40:42,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:42,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:40:42,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:42,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 16:40:42,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:42,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:42,805 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:40:42,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 16:40:42,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:42,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:42,859 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:40:42,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 16:40:42,865 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:42,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:42,901 INFO L354 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2021-06-05 16:40:42,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 36 [2021-06-05 16:40:42,903 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:42,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:42,953 INFO L354 Elim1Store]: treesize reduction 4, result has 91.1 percent of original size [2021-06-05 16:40:42,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59 [2021-06-05 16:40:42,962 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:42,983 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:42,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:40:42,984 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,022 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:43,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57 [2021-06-05 16:40:43,041 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,085 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:40:43,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 16:40:43,092 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,141 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 16:40:43,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 16:40:43,150 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,194 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size [2021-06-05 16:40:43,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 42 [2021-06-05 16:40:43,196 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,215 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:43,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 16:40:43,216 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,257 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 16:40:43,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 16:40:43,262 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,295 INFO L354 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2021-06-05 16:40:43,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 29 [2021-06-05 16:40:43,297 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,316 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:43,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 16:40:43,317 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,338 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:43,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 16:40:43,338 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,390 INFO L354 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2021-06-05 16:40:43,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 48 [2021-06-05 16:40:43,393 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:43,404 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 16:40:43,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:40:43,405 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:43,911 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-06-05 16:40:43,912 INFO L628 ElimStorePlain]: treesize reduction 174, result has 69.4 percent of original size [2021-06-05 16:40:43,918 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 16:40:43,919 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:461 [2021-06-05 16:40:44,200 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-06-05 16:40:44,476 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 16:40:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:44,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792855676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:44,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:44,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 16:40:44,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106898596] [2021-06-05 16:40:44,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 16:40:44,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:44,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 16:40:44,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-06-05 16:40:44,615 INFO L87 Difference]: Start difference. First operand 1831 states and 6228 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:45,382 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2021-06-05 16:40:45,596 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2021-06-05 16:40:46,573 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-06-05 16:40:46,978 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-06-05 16:40:47,113 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 16:40:47,268 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-06-05 16:40:47,396 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-06-05 16:40:47,570 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-05 16:40:48,007 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-05 16:40:48,497 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-06-05 16:40:48,790 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-05 16:40:49,094 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-06-05 16:40:49,433 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2021-06-05 16:40:49,929 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-05 16:40:50,126 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 39 [2021-06-05 16:40:50,835 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2021-06-05 16:40:51,233 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-05 16:40:51,576 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-06-05 16:40:52,047 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 16:40:52,336 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2021-06-05 16:40:52,819 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-06-05 16:40:53,106 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 37 [2021-06-05 16:40:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:40:53,239 INFO L93 Difference]: Finished difference Result 3152 states and 10146 transitions. [2021-06-05 16:40:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 16:40:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:40:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:40:53,243 INFO L225 Difference]: With dead ends: 3152 [2021-06-05 16:40:53,243 INFO L226 Difference]: Without dead ends: 3089 [2021-06-05 16:40:53,244 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 8700.9ms TimeCoverageRelationStatistics Valid=867, Invalid=4103, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 16:40:53,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2021-06-05 16:40:53,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1811. [2021-06-05 16:40:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.4027624309392266) internal successors, (6159), 1810 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6159 transitions. [2021-06-05 16:40:53,269 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6159 transitions. Word has length 26 [2021-06-05 16:40:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:40:53,270 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 6159 transitions. [2021-06-05 16:40:53,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6159 transitions. [2021-06-05 16:40:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:40:53,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:40:53,272 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:40:53,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2243 [2021-06-05 16:40:53,472 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:40:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:40:53,472 INFO L82 PathProgramCache]: Analyzing trace with hash -696255298, now seen corresponding path program 52 times [2021-06-05 16:40:53,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:40:53,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097933435] [2021-06-05 16:40:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:40:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:40:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:53,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:40:53,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097933435] [2021-06-05 16:40:53,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097933435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:53,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514371874] [2021-06-05 16:40:53,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:40:53,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:40:53,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:40:53,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:40:53,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:40:54,431 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-06-05 16:40:54,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:54,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:54,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:54,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2021-06-05 16:40:54,642 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:54,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:54,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:54,672 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 16:40:54,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32 [2021-06-05 16:40:54,676 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:54,937 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-06-05 16:40:54,937 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:54,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:54,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:54,975 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 16:40:54,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39 [2021-06-05 16:40:54,979 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:54,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:54,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,009 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 16:40:55,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 36 [2021-06-05 16:40:55,013 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:55,267 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-05 16:40:55,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:55,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,294 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-06-05 16:40:55,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:40:55,296 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:55,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,319 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-05 16:40:55,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 16:40:55,323 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:55,752 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2021-06-05 16:40:55,753 INFO L628 ElimStorePlain]: treesize reduction 38, result has 92.7 percent of original size [2021-06-05 16:40:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:55,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 16:40:55,796 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:55,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:55,827 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 16:40:55,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 39 [2021-06-05 16:40:55,848 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:56,251 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2021-06-05 16:40:56,252 INFO L628 ElimStorePlain]: treesize reduction 47, result has 90.4 percent of original size [2021-06-05 16:40:56,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:56,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 16:40:56,290 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,317 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-06-05 16:40:56,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 26 [2021-06-05 16:40:56,318 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:56,495 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 16:40:56,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:56,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,523 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-05 16:40:56,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 16:40:56,527 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:56,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:40:56,540 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-06-05 16:40:56,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 16:40:56,541 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:40:56,680 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 16:40:56,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:40:56,692 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 6 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 16:40:56,692 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:621, output treesize:257 [2021-06-05 16:40:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:40:56,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514371874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:40:56,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:40:56,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 16:40:56,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718788940] [2021-06-05 16:40:56,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:40:56,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:40:56,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:40:56,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:40:56,838 INFO L87 Difference]: Start difference. First operand 1811 states and 6159 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:40:57,143 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2021-06-05 16:40:57,963 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 16:40:58,794 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2021-06-05 16:40:59,335 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2021-06-05 16:40:59,822 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2021-06-05 16:40:59,948 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-06-05 16:41:00,186 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-06-05 16:41:00,333 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-06-05 16:41:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:00,732 INFO L93 Difference]: Finished difference Result 3034 states and 9904 transitions. [2021-06-05 16:41:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 16:41:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:00,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:00,736 INFO L225 Difference]: With dead ends: 3034 [2021-06-05 16:41:00,736 INFO L226 Difference]: Without dead ends: 2983 [2021-06-05 16:41:00,737 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 4040.2ms TimeCoverageRelationStatistics Valid=529, Invalid=2333, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 16:41:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-06-05 16:41:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1871. [2021-06-05 16:41:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.411229946524064) internal successors, (6379), 1870 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6379 transitions. [2021-06-05 16:41:00,770 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6379 transitions. Word has length 26 [2021-06-05 16:41:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:00,770 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6379 transitions. [2021-06-05 16:41:00,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6379 transitions. [2021-06-05 16:41:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:00,773 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:00,773 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:00,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2410 [2021-06-05 16:41:00,973 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:00,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:00,973 INFO L82 PathProgramCache]: Analyzing trace with hash 227092556, now seen corresponding path program 53 times [2021-06-05 16:41:00,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:00,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682771885] [2021-06-05 16:41:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:01,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:01,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682771885] [2021-06-05 16:41:01,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682771885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:01,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691759216] [2021-06-05 16:41:01,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:01,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:41:01,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:01,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:41:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:01,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2021-06-05 16:41:01,781 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 16:41:01,788 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 16:41:01,796 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:41:01,803 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:41:01,817 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:41:01,825 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:41:01,832 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2021-06-05 16:41:01,840 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 16:41:01,847 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 16:41:01,854 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:41:01,862 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:41:01,869 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 16:41:01,876 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-05 16:41:01,884 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 16:41:01,891 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:01,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:01,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-05 16:41:01,895 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:01,926 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-05 16:41:01,927 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:41:01,927 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-05 16:41:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:01,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691759216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:01,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:01,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 16:41:01,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755915909] [2021-06-05 16:41:01,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:41:01,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:01,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:41:01,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:41:01,961 INFO L87 Difference]: Start difference. First operand 1871 states and 6379 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:03,075 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 16:41:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:03,280 INFO L93 Difference]: Finished difference Result 2487 states and 8126 transitions. [2021-06-05 16:41:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 16:41:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:03,284 INFO L225 Difference]: With dead ends: 2487 [2021-06-05 16:41:03,284 INFO L226 Difference]: Without dead ends: 2449 [2021-06-05 16:41:03,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1512.0ms TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 16:41:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2021-06-05 16:41:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 1871. [2021-06-05 16:41:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.409090909090909) internal successors, (6375), 1870 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6375 transitions. [2021-06-05 16:41:03,308 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6375 transitions. Word has length 26 [2021-06-05 16:41:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:03,308 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6375 transitions. [2021-06-05 16:41:03,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6375 transitions. [2021-06-05 16:41:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:03,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:03,311 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:03,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2495,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:03,512 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:03,512 INFO L82 PathProgramCache]: Analyzing trace with hash -538930356, now seen corresponding path program 54 times [2021-06-05 16:41:03,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:03,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272839509] [2021-06-05 16:41:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:03,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:03,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272839509] [2021-06-05 16:41:03,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272839509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:03,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882911951] [2021-06-05 16:41:03,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:03,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:41:03,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:03,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:41:03,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:04,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,176 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 16:41:04,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 16:41:04,178 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,207 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-05 16:41:04,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 25 [2021-06-05 16:41:04,208 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,231 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 16:41:04,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 16:41:04,235 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,249 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 16:41:04,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:41:04,250 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,272 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 16:41:04,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-05 16:41:04,273 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,297 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 16:41:04,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-05 16:41:04,298 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,316 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 16:41:04,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 16:41:04,317 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,331 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 16:41:04,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 16:41:04,332 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,355 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-06-05 16:41:04,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26 [2021-06-05 16:41:04,356 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,370 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 16:41:04,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:41:04,370 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,395 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 16:41:04,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:41:04,396 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,417 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 16:41:04,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 24 [2021-06-05 16:41:04,418 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,440 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 16:41:04,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 16:41:04,441 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:04,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-05 16:41:04,467 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,487 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 16:41:04,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-05 16:41:04,488 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:04,496 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 16:41:04,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:41:04,497 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:04,585 INFO L628 ElimStorePlain]: treesize reduction 128, result has 42.1 percent of original size [2021-06-05 16:41:04,586 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:04,586 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:93 [2021-06-05 16:41:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:04,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882911951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:04,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:04,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 16:41:04,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795097261] [2021-06-05 16:41:04,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:41:04,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:04,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:41:04,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:41:04,689 INFO L87 Difference]: Start difference. First operand 1871 states and 6375 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:05,127 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-06-05 16:41:05,531 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2021-06-05 16:41:05,926 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-06-05 16:41:06,324 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2021-06-05 16:41:06,978 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-06-05 16:41:07,292 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2021-06-05 16:41:07,466 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-06-05 16:41:07,750 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2021-06-05 16:41:07,916 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2021-06-05 16:41:08,121 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2021-06-05 16:41:08,356 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-06-05 16:41:08,617 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-05 16:41:08,829 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2021-06-05 16:41:09,098 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-06-05 16:41:09,399 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2021-06-05 16:41:09,679 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-06-05 16:41:09,996 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-06-05 16:41:10,183 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-06-05 16:41:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:10,381 INFO L93 Difference]: Finished difference Result 3107 states and 9967 transitions. [2021-06-05 16:41:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:41:10,381 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:10,386 INFO L225 Difference]: With dead ends: 3107 [2021-06-05 16:41:10,386 INFO L226 Difference]: Without dead ends: 3069 [2021-06-05 16:41:10,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 5492.5ms TimeCoverageRelationStatistics Valid=747, Invalid=2913, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 16:41:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-06-05 16:41:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1881. [2021-06-05 16:41:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 3.4159574468085108) internal successors, (6422), 1880 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 6422 transitions. [2021-06-05 16:41:10,414 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 6422 transitions. Word has length 26 [2021-06-05 16:41:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:10,414 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 6422 transitions. [2021-06-05 16:41:10,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 6422 transitions. [2021-06-05 16:41:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:10,416 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:10,417 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:10,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2591,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:10,618 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:10,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1644457752, now seen corresponding path program 30 times [2021-06-05 16:41:10,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:10,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452710985] [2021-06-05 16:41:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:10,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:10,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452710985] [2021-06-05 16:41:10,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452710985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:10,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606421159] [2021-06-05 16:41:10,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:10,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:41:10,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:10,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:41:10,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:11,335 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 16:41:11,509 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 16:41:11,556 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_191, v_prenex_189], 2=[v_prenex_190, A]} [2021-06-05 16:41:11,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:11,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:41:11,562 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:11,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:11,578 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:11,710 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-05 16:41:11,710 INFO L628 ElimStorePlain]: treesize reduction 118, result has 55.1 percent of original size [2021-06-05 16:41:11,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:11,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 16:41:11,715 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:11,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:11,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:11,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:11,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:11,767 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:11,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:11,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:11,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:11,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:11,814 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:11,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:11,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:11,819 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:11,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:11,856 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:11,856 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:293, output treesize:51 [2021-06-05 16:41:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:11,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606421159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:11,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:11,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 16:41:11,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106765229] [2021-06-05 16:41:11,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:41:11,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:11,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:41:11,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:41:11,913 INFO L87 Difference]: Start difference. First operand 1881 states and 6422 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:12,632 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-05 16:41:13,144 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-06-05 16:41:13,381 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2021-06-05 16:41:13,621 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-06-05 16:41:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:13,753 INFO L93 Difference]: Finished difference Result 2308 states and 7739 transitions. [2021-06-05 16:41:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:41:13,754 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:13,756 INFO L225 Difference]: With dead ends: 2308 [2021-06-05 16:41:13,756 INFO L226 Difference]: Without dead ends: 2293 [2021-06-05 16:41:13,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2085.8ms TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:41:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-06-05 16:41:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1873. [2021-06-05 16:41:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 3.419337606837607) internal successors, (6401), 1872 states have internal predecessors, (6401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:13,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 6401 transitions. [2021-06-05 16:41:13,777 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 6401 transitions. Word has length 26 [2021-06-05 16:41:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:13,777 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 6401 transitions. [2021-06-05 16:41:13,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 6401 transitions. [2021-06-05 16:41:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:13,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:13,779 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:13,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2616 [2021-06-05 16:41:13,981 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1033146674, now seen corresponding path program 31 times [2021-06-05 16:41:13,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:13,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051174176] [2021-06-05 16:41:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:14,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:14,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051174176] [2021-06-05 16:41:14,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051174176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:14,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842495017] [2021-06-05 16:41:14,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:14,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:41:14,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:14,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:14,604 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:14,609 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:14,615 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:14,620 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:41:14,625 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:14,630 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:14,637 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:14,643 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:14,648 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:14,653 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:14,658 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:14,663 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:14,669 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:14,673 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:14,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:14,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:14,677 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:14,748 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:41:14,749 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:14,749 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:41:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:14,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842495017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:14,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:14,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:41:14,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690045858] [2021-06-05 16:41:14,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:41:14,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:14,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:41:14,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:41:14,803 INFO L87 Difference]: Start difference. First operand 1873 states and 6401 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:15,174 INFO L93 Difference]: Finished difference Result 2211 states and 7445 transitions. [2021-06-05 16:41:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 16:41:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:15,177 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 16:41:15,177 INFO L226 Difference]: Without dead ends: 2196 [2021-06-05 16:41:15,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 627.8ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:41:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-06-05 16:41:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1867. [2021-06-05 16:41:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 3.4190782422293675) internal successors, (6380), 1866 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 6380 transitions. [2021-06-05 16:41:15,197 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 6380 transitions. Word has length 26 [2021-06-05 16:41:15,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:15,197 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 6380 transitions. [2021-06-05 16:41:15,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:15,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 6380 transitions. [2021-06-05 16:41:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:15,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:15,199 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:15,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2629,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:15,413 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:15,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1034369354, now seen corresponding path program 32 times [2021-06-05 16:41:15,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:15,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674417626] [2021-06-05 16:41:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:15,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:15,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674417626] [2021-06-05 16:41:15,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674417626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:15,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558817795] [2021-06-05 16:41:15,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:15,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:41:15,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:15,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:41:15,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:16,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,011 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:16,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:16,013 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,023 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:16,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:41:16,026 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,034 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:16,034 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,042 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:16,043 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,053 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:16,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:41:16,054 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,062 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:16,063 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,073 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:16,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:16,076 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,085 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:41:16,086 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,096 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:16,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:41:16,097 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,106 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:16,106 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:16,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:16,119 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,127 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:16,128 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,135 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:16,136 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:16,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:16,147 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,154 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:16,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:41:16,155 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:16,162 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:16,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:16,163 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:16,241 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:16,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:16,245 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:174 [2021-06-05 16:41:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:16,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558817795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:16,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:16,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 16:41:16,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209729472] [2021-06-05 16:41:16,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:41:16,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:16,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:41:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:41:16,418 INFO L87 Difference]: Start difference. First operand 1867 states and 6380 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:16,804 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 28 [2021-06-05 16:41:17,035 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-05 16:41:17,570 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-06-05 16:41:17,908 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2021-06-05 16:41:18,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:18,042 INFO L93 Difference]: Finished difference Result 2784 states and 9269 transitions. [2021-06-05 16:41:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 16:41:18,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:18,046 INFO L225 Difference]: With dead ends: 2784 [2021-06-05 16:41:18,046 INFO L226 Difference]: Without dead ends: 2769 [2021-06-05 16:41:18,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1884.5ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:41:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-06-05 16:41:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1864. [2021-06-05 16:41:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 3.416532474503489) internal successors, (6365), 1863 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 6365 transitions. [2021-06-05 16:41:18,073 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 6365 transitions. Word has length 26 [2021-06-05 16:41:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:18,073 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 6365 transitions. [2021-06-05 16:41:18,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 6365 transitions. [2021-06-05 16:41:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:18,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:18,075 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:18,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2657 [2021-06-05 16:41:18,279 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:18,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1269968860, now seen corresponding path program 33 times [2021-06-05 16:41:18,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:18,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720489017] [2021-06-05 16:41:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:18,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:18,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720489017] [2021-06-05 16:41:18,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720489017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:18,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033956544] [2021-06-05 16:41:18,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:18,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:41:18,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:18,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:41:18,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:18,931 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 16:41:19,159 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 16:41:19,237 INFO L446 ElimStorePlain]: Different costs {1=[A, v_prenex_201], 2=[v_prenex_199, v_prenex_200]} [2021-06-05 16:41:19,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:19,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 16:41:19,243 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:19,355 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-06-05 16:41:19,356 INFO L628 ElimStorePlain]: treesize reduction 54, result has 73.9 percent of original size [2021-06-05 16:41:19,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:19,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:19,361 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:19,407 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:19,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:19,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:19,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:19,414 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:19,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:19,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:19,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:19,430 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:19,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:19,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:19,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:19,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:19,473 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:19,510 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:19,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:19,512 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:217, output treesize:51 [2021-06-05 16:41:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:19,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033956544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:19,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:19,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 16:41:19,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566488648] [2021-06-05 16:41:19,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:41:19,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:19,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:41:19,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:41:19,573 INFO L87 Difference]: Start difference. First operand 1864 states and 6365 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:20,731 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 16:41:21,134 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 16:41:21,447 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-06-05 16:41:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:21,587 INFO L93 Difference]: Finished difference Result 2480 states and 8310 transitions. [2021-06-05 16:41:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:41:21,587 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:21,590 INFO L225 Difference]: With dead ends: 2480 [2021-06-05 16:41:21,590 INFO L226 Difference]: Without dead ends: 2465 [2021-06-05 16:41:21,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2390.2ms TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:41:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-06-05 16:41:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 1863. [2021-06-05 16:41:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4162191192266382) internal successors, (6361), 1862 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6361 transitions. [2021-06-05 16:41:21,613 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6361 transitions. Word has length 26 [2021-06-05 16:41:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:21,613 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6361 transitions. [2021-06-05 16:41:21,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6361 transitions. [2021-06-05 16:41:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:21,616 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:21,616 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:21,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2694 [2021-06-05 16:41:21,816 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:21,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1946185846, now seen corresponding path program 34 times [2021-06-05 16:41:21,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:21,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796046090] [2021-06-05 16:41:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:22,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:22,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796046090] [2021-06-05 16:41:22,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796046090] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:22,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684343667] [2021-06-05 16:41:22,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:22,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:41:22,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:22,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:41:22,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:22,368 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 16:41:22,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:22,478 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:22,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:41:22,479 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:22,597 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 16:41:22,597 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:22,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:22,609 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:22,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:22,611 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:22,711 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 16:41:22,712 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:22,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:22,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:22,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:22,725 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:22,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:22,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:22,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:22,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:22,839 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:22,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:22,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:22,946 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:22,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:41:22,949 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:23,040 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:23,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:23,050 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:23,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:23,051 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:23,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:23,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:23,151 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:23,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:41:23,152 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:23,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:23,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:23,249 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:23,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:23,250 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:23,331 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:23,337 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:23,337 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 16:41:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:23,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684343667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:23,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:23,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 16:41:23,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71308293] [2021-06-05 16:41:23,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:41:23,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:23,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:41:23,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:41:23,520 INFO L87 Difference]: Start difference. First operand 1863 states and 6361 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:24,075 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2021-06-05 16:41:24,503 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-06-05 16:41:24,970 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 16:41:25,341 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2021-06-05 16:41:25,527 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-06-05 16:41:25,781 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2021-06-05 16:41:25,925 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-06-05 16:41:25,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:25,993 INFO L93 Difference]: Finished difference Result 2968 states and 9767 transitions. [2021-06-05 16:41:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 16:41:25,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:25,997 INFO L225 Difference]: With dead ends: 2968 [2021-06-05 16:41:25,998 INFO L226 Difference]: Without dead ends: 2938 [2021-06-05 16:41:25,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2727.3ms TimeCoverageRelationStatistics Valid=276, Invalid=984, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 16:41:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-06-05 16:41:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1863. [2021-06-05 16:41:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4183673469387754) internal successors, (6365), 1862 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6365 transitions. [2021-06-05 16:41:26,024 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6365 transitions. Word has length 26 [2021-06-05 16:41:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:26,024 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6365 transitions. [2021-06-05 16:41:26,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6365 transitions. [2021-06-05 16:41:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:26,026 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:26,027 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:26,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2703,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:26,229 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash 663462910, now seen corresponding path program 35 times [2021-06-05 16:41:26,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:26,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394220453] [2021-06-05 16:41:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:26,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:26,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394220453] [2021-06-05 16:41:26,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394220453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:26,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064302762] [2021-06-05 16:41:26,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:26,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:41:26,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:26,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:41:26,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:26,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:26,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:26,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:26,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:26,990 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:26,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:26,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:26,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:26,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:26,996 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:26,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:27,002 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:27,009 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:27,015 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:27,021 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:27,028 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:27,034 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:27,039 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:27,045 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:27,052 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:27,058 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:41:27,063 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:27,068 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:27,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:27,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:27,072 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:27,143 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:41:27,144 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:27,144 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:41:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:27,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064302762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:27,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:27,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:41:27,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024871888] [2021-06-05 16:41:27,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:41:27,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:27,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:41:27,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:41:27,193 INFO L87 Difference]: Start difference. First operand 1863 states and 6365 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:27,711 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2021-06-05 16:41:28,010 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 16:41:28,156 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-06-05 16:41:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:28,343 INFO L93 Difference]: Finished difference Result 2374 states and 7932 transitions. [2021-06-05 16:41:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:41:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:28,347 INFO L225 Difference]: With dead ends: 2374 [2021-06-05 16:41:28,347 INFO L226 Difference]: Without dead ends: 2353 [2021-06-05 16:41:28,347 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1414.7ms TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:41:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-06-05 16:41:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1878. [2021-06-05 16:41:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 3.4214171550346295) internal successors, (6422), 1877 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 6422 transitions. [2021-06-05 16:41:28,370 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 6422 transitions. Word has length 26 [2021-06-05 16:41:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:28,370 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 6422 transitions. [2021-06-05 16:41:28,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 6422 transitions. [2021-06-05 16:41:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:28,372 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:28,372 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:28,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2718,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:28,574 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash -716780640, now seen corresponding path program 36 times [2021-06-05 16:41:28,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:28,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133399333] [2021-06-05 16:41:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:28,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:28,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133399333] [2021-06-05 16:41:28,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133399333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:28,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978407051] [2021-06-05 16:41:28,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:28,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:41:28,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:28,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:41:28,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:29,138 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:29,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:41:29,139 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,147 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:29,148 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,165 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:29,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 16:41:29,169 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:29,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:41:29,186 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,194 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:41:29,195 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,211 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:29,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:29,212 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,220 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:29,221 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,240 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:29,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:41:29,243 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,252 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:29,252 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,261 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:29,261 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,270 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:29,271 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,279 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:41:29,280 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,288 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:29,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:29,289 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,303 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:29,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:41:29,308 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,331 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:29,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:41:29,333 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,345 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:29,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:41:29,347 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:29,436 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:29,445 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:29,445 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:245 [2021-06-05 16:41:29,615 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 16:41:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:29,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978407051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:29,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:29,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-05 16:41:29,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632261020] [2021-06-05 16:41:29,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:41:29,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:29,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:41:29,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:41:29,706 INFO L87 Difference]: Start difference. First operand 1878 states and 6422 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:31,582 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-06-05 16:41:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:31,622 INFO L93 Difference]: Finished difference Result 2454 states and 8038 transitions. [2021-06-05 16:41:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 16:41:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:31,625 INFO L225 Difference]: With dead ends: 2454 [2021-06-05 16:41:31,625 INFO L226 Difference]: Without dead ends: 2416 [2021-06-05 16:41:31,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1869.8ms TimeCoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 16:41:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-06-05 16:41:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1866. [2021-06-05 16:41:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.420911528150134) internal successors, (6380), 1865 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6380 transitions. [2021-06-05 16:41:31,648 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6380 transitions. Word has length 26 [2021-06-05 16:41:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:31,648 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6380 transitions. [2021-06-05 16:41:31,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6380 transitions. [2021-06-05 16:41:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:31,651 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:31,651 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:31,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2746,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:31,866 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:31,866 INFO L82 PathProgramCache]: Analyzing trace with hash 475685792, now seen corresponding path program 37 times [2021-06-05 16:41:31,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:31,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82801636] [2021-06-05 16:41:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:32,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:32,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82801636] [2021-06-05 16:41:32,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82801636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:32,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216451516] [2021-06-05 16:41:32,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:32,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:41:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:32,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,369 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:32,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:32,370 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,377 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:32,378 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,388 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:32,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:32,391 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,402 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:32,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:32,404 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,414 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:32,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:32,415 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,426 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:32,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:32,427 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,436 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:32,436 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,445 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:32,445 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,453 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:41:32,454 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:32,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:41:32,465 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,476 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:32,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:41:32,477 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,485 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:41:32,486 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,494 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:32,494 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,502 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:32,503 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:32,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:41:32,514 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:32,519 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:41:32,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:32,520 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:32,610 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:32,615 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:32,616 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:705, output treesize:180 [2021-06-05 16:41:32,763 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-05 16:41:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:32,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216451516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:32,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:32,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:41:32,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169409184] [2021-06-05 16:41:32,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:41:32,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:32,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:41:32,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:41:32,856 INFO L87 Difference]: Start difference. First operand 1866 states and 6380 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:33,330 INFO L93 Difference]: Finished difference Result 2282 states and 7604 transitions. [2021-06-05 16:41:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 16:41:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:33,333 INFO L225 Difference]: With dead ends: 2282 [2021-06-05 16:41:33,333 INFO L226 Difference]: Without dead ends: 2257 [2021-06-05 16:41:33,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 783.1ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:41:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-06-05 16:41:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1857. [2021-06-05 16:41:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 3.4132543103448274) internal successors, (6335), 1856 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 6335 transitions. [2021-06-05 16:41:33,363 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 6335 transitions. Word has length 26 [2021-06-05 16:41:33,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:33,364 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 6335 transitions. [2021-06-05 16:41:33,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 6335 transitions. [2021-06-05 16:41:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:33,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:33,366 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:33,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2796 [2021-06-05 16:41:33,566 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:33,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:33,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1353247494, now seen corresponding path program 38 times [2021-06-05 16:41:33,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:33,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152473387] [2021-06-05 16:41:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:33,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:33,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152473387] [2021-06-05 16:41:33,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152473387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:33,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143618032] [2021-06-05 16:41:33,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:33,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:41:33,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:33,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:41:33,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:34,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:34,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:41:34,150 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:34,156 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:34,172 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:34,177 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:34,182 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:34,188 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:34,193 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:34,199 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:34,204 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:34,209 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:34,214 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:34,219 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:34,224 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:34,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:34,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:34,227 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:34,302 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:41:34,303 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:34,304 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:41:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:34,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143618032] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:34,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:34,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:41:34,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976760164] [2021-06-05 16:41:34,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:41:34,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:34,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:41:34,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:41:34,357 INFO L87 Difference]: Start difference. First operand 1857 states and 6335 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:34,641 INFO L93 Difference]: Finished difference Result 1943 states and 6537 transitions. [2021-06-05 16:41:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 16:41:34,641 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:34,643 INFO L225 Difference]: With dead ends: 1943 [2021-06-05 16:41:34,643 INFO L226 Difference]: Without dead ends: 1924 [2021-06-05 16:41:34,644 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 481.6ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:41:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-06-05 16:41:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1834. [2021-06-05 16:41:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 3.413529732678669) internal successors, (6257), 1833 states have internal predecessors, (6257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 6257 transitions. [2021-06-05 16:41:34,663 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 6257 transitions. Word has length 26 [2021-06-05 16:41:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:34,663 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 6257 transitions. [2021-06-05 16:41:34,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 6257 transitions. [2021-06-05 16:41:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:34,666 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:34,666 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:34,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2837,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:34,866 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash 794427266, now seen corresponding path program 39 times [2021-06-05 16:41:34,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:34,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176651730] [2021-06-05 16:41:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:35,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:35,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176651730] [2021-06-05 16:41:35,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176651730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:35,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244957199] [2021-06-05 16:41:35,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:35,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:41:35,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:35,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:41:35,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:35,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:35,504 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:35,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:41:35,508 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:35,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:35,528 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:35,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:41:35,530 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:35,671 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 16:41:35,671 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:35,691 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:35,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:35,693 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:35,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:35,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 16:41:35,713 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:35,980 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2021-06-05 16:41:35,980 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.0 percent of original size [2021-06-05 16:41:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:35,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:35,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:41:36,000 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:36,018 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:36,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 16:41:36,019 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:36,260 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-05 16:41:36,261 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.1 percent of original size [2021-06-05 16:41:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:36,275 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:36,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:41:36,280 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:36,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:36,294 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:36,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:41:36,296 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:36,405 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-05 16:41:36,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:36,421 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:36,421 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:253 [2021-06-05 16:41:36,603 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-06-05 16:41:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:36,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244957199] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:36,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:36,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 16:41:36,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466221050] [2021-06-05 16:41:36,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:41:36,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:36,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:41:36,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:41:36,694 INFO L87 Difference]: Start difference. First operand 1834 states and 6257 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:37,343 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-06-05 16:41:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:37,551 INFO L93 Difference]: Finished difference Result 2041 states and 6856 transitions. [2021-06-05 16:41:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 16:41:37,551 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:37,554 INFO L225 Difference]: With dead ends: 2041 [2021-06-05 16:41:37,554 INFO L226 Difference]: Without dead ends: 2016 [2021-06-05 16:41:37,554 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1198.7ms TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:41:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-06-05 16:41:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1816. [2021-06-05 16:41:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 3.41763085399449) internal successors, (6203), 1815 states have internal predecessors, (6203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 6203 transitions. [2021-06-05 16:41:37,574 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 6203 transitions. Word has length 26 [2021-06-05 16:41:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:37,574 INFO L482 AbstractCegarLoop]: Abstraction has 1816 states and 6203 transitions. [2021-06-05 16:41:37,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 6203 transitions. [2021-06-05 16:41:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:37,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:37,576 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:37,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2865 [2021-06-05 16:41:37,777 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:37,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:37,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1247883966, now seen corresponding path program 40 times [2021-06-05 16:41:37,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:37,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138440623] [2021-06-05 16:41:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:38,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:38,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138440623] [2021-06-05 16:41:38,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138440623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:38,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260935235] [2021-06-05 16:41:38,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:38,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:41:38,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:38,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:41:38,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:38,358 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-05 16:41:38,455 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_232], 3=[v_prenex_233, v_prenex_234]} [2021-06-05 16:41:38,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,467 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:38,468 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:38,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:38,483 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:38,619 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 16:41:38,619 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,631 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:41:38,632 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:38,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,642 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:38,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:38,643 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:38,765 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 16:41:38,766 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,779 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:41:38,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 16:41:38,780 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:38,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:41:38,793 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:38,897 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 16:41:38,897 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,909 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:38,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 16:41:38,912 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:38,921 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:41:38,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 16:41:38,922 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:39,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:39,020 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:39,020 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:361, output treesize:194 [2021-06-05 16:41:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:39,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260935235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:39,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:39,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 16:41:39,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361294975] [2021-06-05 16:41:39,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:41:39,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:39,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:41:39,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:41:39,215 INFO L87 Difference]: Start difference. First operand 1816 states and 6203 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:39,488 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-06-05 16:41:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:39,999 INFO L93 Difference]: Finished difference Result 2323 states and 7788 transitions. [2021-06-05 16:41:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 16:41:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:40,002 INFO L225 Difference]: With dead ends: 2323 [2021-06-05 16:41:40,003 INFO L226 Difference]: Without dead ends: 2298 [2021-06-05 16:41:40,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1104.8ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-06-05 16:41:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-06-05 16:41:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1804. [2021-06-05 16:41:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1803 states have (on average 3.4170826400443706) internal successors, (6161), 1803 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 6161 transitions. [2021-06-05 16:41:40,024 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 6161 transitions. Word has length 26 [2021-06-05 16:41:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:40,024 INFO L482 AbstractCegarLoop]: Abstraction has 1804 states and 6161 transitions. [2021-06-05 16:41:40,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 6161 transitions. [2021-06-05 16:41:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:40,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:40,027 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:40,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2921,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:40,227 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash 305289786, now seen corresponding path program 41 times [2021-06-05 16:41:40,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:40,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545574154] [2021-06-05 16:41:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:40,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:40,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545574154] [2021-06-05 16:41:40,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545574154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:40,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366542260] [2021-06-05 16:41:40,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:40,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:41:40,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:40,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:41:40,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:40,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:40,843 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:40,858 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:40,863 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:40,868 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:40,873 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:40,879 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:40,884 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:40,889 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:41:40,894 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:40,900 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:41:40,905 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:40,910 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:40,915 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:40,920 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:40,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:40,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:40,923 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:40,991 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 16:41:40,992 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:40,992 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 16:41:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:41,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366542260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:41,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:41,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:41:41,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645990977] [2021-06-05 16:41:41,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:41:41,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:41,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:41:41,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:41:41,042 INFO L87 Difference]: Start difference. First operand 1804 states and 6161 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:41,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:41,842 INFO L93 Difference]: Finished difference Result 2327 states and 7784 transitions. [2021-06-05 16:41:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 16:41:41,842 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:41,846 INFO L225 Difference]: With dead ends: 2327 [2021-06-05 16:41:41,846 INFO L226 Difference]: Without dead ends: 2312 [2021-06-05 16:41:41,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 984.5ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 16:41:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-06-05 16:41:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1849. [2021-06-05 16:41:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 3.411796536796537) internal successors, (6305), 1848 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 6305 transitions. [2021-06-05 16:41:41,867 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 6305 transitions. Word has length 26 [2021-06-05 16:41:41,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:41,867 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 6305 transitions. [2021-06-05 16:41:41,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 6305 transitions. [2021-06-05 16:41:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:41,869 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:41,869 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:42,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2953,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:42,070 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:42,070 INFO L82 PathProgramCache]: Analyzing trace with hash 137480694, now seen corresponding path program 42 times [2021-06-05 16:41:42,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:42,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246313042] [2021-06-05 16:41:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:42,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:42,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246313042] [2021-06-05 16:41:42,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246313042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:42,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924042267] [2021-06-05 16:41:42,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:42,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:41:42,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:41:42,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:42,703 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:41:42,704 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,711 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:42,712 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,720 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:42,720 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,728 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:41:42,729 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,737 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:42,737 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:42,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:41:42,752 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,760 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:42,761 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,768 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:42,769 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,783 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:42,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:41:42,785 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,801 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:42,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:41:42,802 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,820 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:42,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:41:42,821 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,834 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:42,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:41:42,839 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,846 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 16:41:42,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:41:42,847 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,864 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:42,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:41:42,867 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,883 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:42,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:42,884 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,898 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:42,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 16:41:42,902 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:42,992 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:43,006 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:43,006 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:247 [2021-06-05 16:41:43,164 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 16:41:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:43,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924042267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:43,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:43,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:41:43,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433269683] [2021-06-05 16:41:43,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:41:43,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:43,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:41:43,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:41:43,283 INFO L87 Difference]: Start difference. First operand 1849 states and 6305 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:44,432 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-06-05 16:41:44,821 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-06-05 16:41:44,985 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-06-05 16:41:45,212 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2021-06-05 16:41:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:45,245 INFO L93 Difference]: Finished difference Result 2674 states and 8821 transitions. [2021-06-05 16:41:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:41:45,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:45,249 INFO L225 Difference]: With dead ends: 2674 [2021-06-05 16:41:45,249 INFO L226 Difference]: Without dead ends: 2644 [2021-06-05 16:41:45,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2237.3ms TimeCoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 16:41:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-06-05 16:41:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1849. [2021-06-05 16:41:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 3.411796536796537) internal successors, (6305), 1848 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 6305 transitions. [2021-06-05 16:41:45,273 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 6305 transitions. Word has length 26 [2021-06-05 16:41:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:45,273 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 6305 transitions. [2021-06-05 16:41:45,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 6305 transitions. [2021-06-05 16:41:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:45,275 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:45,275 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:45,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2985 [2021-06-05 16:41:45,475 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash 436254142, now seen corresponding path program 43 times [2021-06-05 16:41:45,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:45,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549821351] [2021-06-05 16:41:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:45,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:45,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549821351] [2021-06-05 16:41:45,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549821351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:45,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622017850] [2021-06-05 16:41:45,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:41:45,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:46,074 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_238], 3=[A, v_prenex_240, v_prenex_236]} [2021-06-05 16:41:46,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:46,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:46,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:46,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:46,087 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:46,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:46,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:46,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:41:46,094 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:46,222 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2021-06-05 16:41:46,222 INFO L628 ElimStorePlain]: treesize reduction 158, result has 46.4 percent of original size [2021-06-05 16:41:46,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:46,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:46,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 16:41:46,227 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:46,269 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:46,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:46,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:46,274 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:46,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:46,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:46,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 16:41:46,316 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:46,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:46,353 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:46,353 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:335, output treesize:51 [2021-06-05 16:41:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:46,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622017850] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:46,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:46,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:41:46,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036379810] [2021-06-05 16:41:46,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:41:46,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:46,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:41:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:41:46,406 INFO L87 Difference]: Start difference. First operand 1849 states and 6305 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:47,045 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-06-05 16:41:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:47,149 INFO L93 Difference]: Finished difference Result 2432 states and 8093 transitions. [2021-06-05 16:41:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 16:41:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:47,153 INFO L225 Difference]: With dead ends: 2432 [2021-06-05 16:41:47,153 INFO L226 Difference]: Without dead ends: 2402 [2021-06-05 16:41:47,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1003.6ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-06-05 16:41:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2021-06-05 16:41:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1851. [2021-06-05 16:41:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1850 states have (on average 3.4135135135135135) internal successors, (6315), 1850 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 6315 transitions. [2021-06-05 16:41:47,176 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 6315 transitions. Word has length 26 [2021-06-05 16:41:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:47,176 INFO L482 AbstractCegarLoop]: Abstraction has 1851 states and 6315 transitions. [2021-06-05 16:41:47,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 6315 transitions. [2021-06-05 16:41:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:47,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:47,178 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:47,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3034 [2021-06-05 16:41:47,378 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1514157122, now seen corresponding path program 44 times [2021-06-05 16:41:47,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:47,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237911372] [2021-06-05 16:41:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:47,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:47,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237911372] [2021-06-05 16:41:47,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237911372] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:47,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090966558] [2021-06-05 16:41:47,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:47,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:41:47,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:47,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:41:47,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,199 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:48,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:41:48,200 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:48,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,219 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:48,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:41:48,223 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:48,369 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 16:41:48,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:48,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,390 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:41:48,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 33 [2021-06-05 16:41:48,391 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,414 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:48,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 37 [2021-06-05 16:41:48,418 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:48,692 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2021-06-05 16:41:48,692 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.7 percent of original size [2021-06-05 16:41:48,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,710 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:48,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:41:48,712 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,724 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:48,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:41:48,730 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:48,856 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 16:41:48,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:48,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:48,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 16:41:48,877 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:48,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:48,890 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:41:48,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:48,892 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:49,128 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-06-05 16:41:49,128 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.9 percent of original size [2021-06-05 16:41:49,145 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:49,145 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:385, output treesize:286 [2021-06-05 16:41:49,340 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-06-05 16:41:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:49,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090966558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:49,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:49,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-06-05 16:41:49,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801097906] [2021-06-05 16:41:49,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:41:49,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:49,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:41:49,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:41:49,429 INFO L87 Difference]: Start difference. First operand 1851 states and 6315 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:49,682 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-05 16:41:49,931 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-06-05 16:41:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:50,362 INFO L93 Difference]: Finished difference Result 2442 states and 8174 transitions. [2021-06-05 16:41:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 16:41:50,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:50,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:50,365 INFO L225 Difference]: With dead ends: 2442 [2021-06-05 16:41:50,365 INFO L226 Difference]: Without dead ends: 2427 [2021-06-05 16:41:50,365 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1507.8ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-06-05 16:41:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-06-05 16:41:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1869. [2021-06-05 16:41:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 3.4095289079229123) internal successors, (6369), 1868 states have internal predecessors, (6369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 6369 transitions. [2021-06-05 16:41:50,388 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 6369 transitions. Word has length 26 [2021-06-05 16:41:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:50,388 INFO L482 AbstractCegarLoop]: Abstraction has 1869 states and 6369 transitions. [2021-06-05 16:41:50,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 6369 transitions. [2021-06-05 16:41:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:50,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:50,390 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:50,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3045,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:50,590 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash -714815838, now seen corresponding path program 45 times [2021-06-05 16:41:50,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:50,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108231910] [2021-06-05 16:41:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:50,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:50,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108231910] [2021-06-05 16:41:50,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108231910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:50,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787339526] [2021-06-05 16:41:50,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:50,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:41:50,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:50,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:41:50,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:51,253 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 16:41:51,493 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 16:41:51,577 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_256, v_prenex_257], 2=[A, v_prenex_258]} [2021-06-05 16:41:51,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:51,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:41:51,583 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:51,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:51,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:51,588 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:51,718 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-05 16:41:51,718 INFO L628 ElimStorePlain]: treesize reduction 130, result has 54.7 percent of original size [2021-06-05 16:41:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:51,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 16:41:51,723 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:51,770 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:51,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:51,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:51,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:51,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:41:51,777 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:51,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:51,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:51,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:51,781 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:51,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:51,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:41:51,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:41:51,826 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:51,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:51,864 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:41:51,864 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:317, output treesize:51 [2021-06-05 16:41:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:51,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787339526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:51,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:51,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 16:41:51,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202441512] [2021-06-05 16:41:51,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:41:51,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:51,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:41:51,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:41:51,935 INFO L87 Difference]: Start difference. First operand 1869 states and 6369 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:52,616 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 16:41:52,847 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2021-06-05 16:41:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:52,988 INFO L93 Difference]: Finished difference Result 1982 states and 6684 transitions. [2021-06-05 16:41:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 16:41:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:52,991 INFO L225 Difference]: With dead ends: 1982 [2021-06-05 16:41:52,991 INFO L226 Difference]: Without dead ends: 1967 [2021-06-05 16:41:52,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1406.0ms TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:41:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-06-05 16:41:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1890. [2021-06-05 16:41:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 3.4060349391212283) internal successors, (6434), 1889 states have internal predecessors, (6434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 6434 transitions. [2021-06-05 16:41:53,011 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 6434 transitions. Word has length 26 [2021-06-05 16:41:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:53,011 INFO L482 AbstractCegarLoop]: Abstraction has 1890 states and 6434 transitions. [2021-06-05 16:41:53,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 6434 transitions. [2021-06-05 16:41:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:53,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:53,013 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:53,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3106 [2021-06-05 16:41:53,214 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1962618678, now seen corresponding path program 46 times [2021-06-05 16:41:53,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:53,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077458844] [2021-06-05 16:41:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:53,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:53,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077458844] [2021-06-05 16:41:53,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077458844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:53,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294084533] [2021-06-05 16:41:53,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:53,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:41:53,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:53,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:41:53,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:53,851 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 16:41:53,916 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_270, v_prenex_264, v_prenex_266], 3=[v_prenex_271, v_prenex_273, v_prenex_265, v_prenex_268]} [2021-06-05 16:41:53,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:53,929 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:53,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:53,931 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,044 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 16:41:54,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,056 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:54,057 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,172 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 16:41:54,173 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,192 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:54,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:54,194 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,317 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 16:41:54,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,329 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:41:54,330 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,438 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 16:41:54,438 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,450 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 16:41:54,453 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,556 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 16:41:54,556 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,568 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:41:54,572 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,672 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 16:41:54,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,684 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:41:54,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 16:41:54,685 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:54,794 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:41:54,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 16:41:54,795 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:54,882 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:54,897 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:54,898 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:345, output treesize:194 [2021-06-05 16:41:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:55,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294084533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:55,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:55,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 16:41:55,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800155323] [2021-06-05 16:41:55,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:41:55,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:55,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:41:55,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:41:55,082 INFO L87 Difference]: Start difference. First operand 1890 states and 6434 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:55,755 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 16:41:56,131 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2021-06-05 16:41:56,338 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-06-05 16:41:56,537 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2021-06-05 16:41:56,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:56,625 INFO L93 Difference]: Finished difference Result 2744 states and 9064 transitions. [2021-06-05 16:41:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 16:41:56,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:56,629 INFO L225 Difference]: With dead ends: 2744 [2021-06-05 16:41:56,629 INFO L226 Difference]: Without dead ends: 2714 [2021-06-05 16:41:56,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1901.7ms TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2021-06-05 16:41:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-06-05 16:41:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 1888. [2021-06-05 16:41:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.408055113937467) internal successors, (6431), 1887 states have internal predecessors, (6431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6431 transitions. [2021-06-05 16:41:56,655 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6431 transitions. Word has length 26 [2021-06-05 16:41:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:56,655 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6431 transitions. [2021-06-05 16:41:56,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6431 transitions. [2021-06-05 16:41:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:56,658 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:56,658 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:56,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3121 [2021-06-05 16:41:56,858 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:56,858 INFO L82 PathProgramCache]: Analyzing trace with hash 272675774, now seen corresponding path program 47 times [2021-06-05 16:41:56,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:56,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088944940] [2021-06-05 16:41:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:57,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:57,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088944940] [2021-06-05 16:41:57,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088944940] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:57,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637065288] [2021-06-05 16:41:57,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:57,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:41:57,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:57,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:41:57,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:41:57,615 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-05 16:41:57,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:57,718 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:57,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:41:57,722 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:57,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:57,732 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:57,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:41:57,733 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:57,856 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 16:41:57,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:57,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:57,868 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:57,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:57,871 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:57,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:57,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:57,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:41:57,881 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:57,989 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 16:41:57,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:57,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:58,000 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:58,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:41:58,003 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:58,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:58,013 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:58,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:58,014 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:58,120 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 16:41:58,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:58,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:58,131 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:58,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:41:58,132 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:41:58,140 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:41:58,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:41:58,142 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:41:58,229 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:41:58,237 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:41:58,238 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:333, output treesize:174 [2021-06-05 16:41:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:58,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637065288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:58,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:41:58,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 16:41:58,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745770418] [2021-06-05 16:41:58,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:41:58,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:41:58,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:41:58,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:41:58,418 INFO L87 Difference]: Start difference. First operand 1888 states and 6431 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:59,226 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 16:41:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:41:59,277 INFO L93 Difference]: Finished difference Result 2422 states and 8105 transitions. [2021-06-05 16:41:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 16:41:59,277 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:41:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:41:59,280 INFO L225 Difference]: With dead ends: 2422 [2021-06-05 16:41:59,280 INFO L226 Difference]: Without dead ends: 2397 [2021-06-05 16:41:59,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1284.6ms TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2021-06-05 16:41:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-06-05 16:41:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1888. [2021-06-05 16:41:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.4101748807631163) internal successors, (6435), 1887 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6435 transitions. [2021-06-05 16:41:59,303 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6435 transitions. Word has length 26 [2021-06-05 16:41:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:41:59,303 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6435 transitions. [2021-06-05 16:41:59,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:41:59,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6435 transitions. [2021-06-05 16:41:59,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:41:59,305 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:41:59,305 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:41:59,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3138 [2021-06-05 16:41:59,507 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:41:59,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:41:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1537750790, now seen corresponding path program 48 times [2021-06-05 16:41:59,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:41:59,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992912566] [2021-06-05 16:41:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:41:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:41:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:41:59,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:41:59,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992912566] [2021-06-05 16:41:59,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992912566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:41:59,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440298718] [2021-06-05 16:41:59,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:41:59,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:41:59,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:41:59,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:41:59,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:00,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,017 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:42:00,017 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,025 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:42:00,026 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,033 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:42:00,033 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,043 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:00,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:42:00,045 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:00,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:42:00,058 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,065 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:42:00,066 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,077 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:00,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:42:00,078 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,089 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:00,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:42:00,090 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,100 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 16:42:00,101 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,112 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:00,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:42:00,115 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,124 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:42:00,124 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,131 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:42:00,132 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:42:00,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:42:00,143 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,156 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:42:00,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:42:00,157 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,169 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:42:00,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:42:00,170 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:00,177 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 16:42:00,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:42:00,177 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:00,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:00,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:42:00,245 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 16:42:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:00,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440298718] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:00,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:00,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:42:00,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051003280] [2021-06-05 16:42:00,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:42:00,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:00,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:42:00,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:42:00,436 INFO L87 Difference]: Start difference. First operand 1888 states and 6435 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:01,155 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 16:42:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:01,210 INFO L93 Difference]: Finished difference Result 2430 states and 8144 transitions. [2021-06-05 16:42:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 16:42:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:01,213 INFO L225 Difference]: With dead ends: 2430 [2021-06-05 16:42:01,213 INFO L226 Difference]: Without dead ends: 2415 [2021-06-05 16:42:01,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1023.6ms TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-06-05 16:42:01,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2021-06-05 16:42:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 1888. [2021-06-05 16:42:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.4101748807631163) internal successors, (6435), 1887 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6435 transitions. [2021-06-05 16:42:01,236 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6435 transitions. Word has length 26 [2021-06-05 16:42:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:01,236 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6435 transitions. [2021-06-05 16:42:01,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6435 transitions. [2021-06-05 16:42:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:01,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:01,238 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:01,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3171,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:01,439 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:01,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1872442310, now seen corresponding path program 55 times [2021-06-05 16:42:01,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:01,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332054538] [2021-06-05 16:42:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:01,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:01,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332054538] [2021-06-05 16:42:01,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332054538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:01,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964728659] [2021-06-05 16:42:01,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:01,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:42:01,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:02,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 16:42:02,338 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:42:02,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:42:02,352 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 16:42:02,360 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 16:42:02,367 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:42:02,375 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:42:02,382 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:42:02,390 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:42:02,397 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:42:02,405 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:42:02,412 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 16:42:02,420 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:42:02,426 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:42:02,433 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:02,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:02,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:42:02,437 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:02,461 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-05 16:42:02,462 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:42:02,462 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 16:42:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:02,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964728659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:02,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:02,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 16:42:02,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355318041] [2021-06-05 16:42:02,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:42:02,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:02,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:42:02,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:42:02,489 INFO L87 Difference]: Start difference. First operand 1888 states and 6435 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:03,138 INFO L93 Difference]: Finished difference Result 2457 states and 7898 transitions. [2021-06-05 16:42:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 16:42:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:03,142 INFO L225 Difference]: With dead ends: 2457 [2021-06-05 16:42:03,142 INFO L226 Difference]: Without dead ends: 2420 [2021-06-05 16:42:03,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 947.5ms TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:42:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-06-05 16:42:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1914. [2021-06-05 16:42:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 3.410350235232619) internal successors, (6524), 1913 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 6524 transitions. [2021-06-05 16:42:03,167 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 6524 transitions. Word has length 26 [2021-06-05 16:42:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:03,167 INFO L482 AbstractCegarLoop]: Abstraction has 1914 states and 6524 transitions. [2021-06-05 16:42:03,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 6524 transitions. [2021-06-05 16:42:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:03,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:03,169 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:03,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3188 [2021-06-05 16:42:03,370 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:03,370 INFO L82 PathProgramCache]: Analyzing trace with hash -804567746, now seen corresponding path program 56 times [2021-06-05 16:42:03,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:03,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191283070] [2021-06-05 16:42:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:03,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:03,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191283070] [2021-06-05 16:42:03,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191283070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:03,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104559328] [2021-06-05 16:42:03,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:03,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:42:03,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:03,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:42:03,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:03,897 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-06-05 16:42:03,943 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_283, v_prenex_285], 6=[A, v_prenex_287]} [2021-06-05 16:42:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:03,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:03,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:03,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 16:42:03,950 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:03,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:03,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:03,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 16:42:03,956 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:04,064 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-06-05 16:42:04,064 INFO L628 ElimStorePlain]: treesize reduction 166, result has 44.9 percent of original size [2021-06-05 16:42:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:04,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-05 16:42:04,069 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:04,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:04,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:04,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:04,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 16:42:04,105 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:04,134 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:04,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:04,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:04,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:04,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 16:42:04,139 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:04,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:04,166 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 16:42:04,167 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:365, output treesize:33 [2021-06-05 16:42:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:04,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104559328] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:04,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:04,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 16:42:04,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890598288] [2021-06-05 16:42:04,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:42:04,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:04,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:42:04,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:42:04,208 INFO L87 Difference]: Start difference. First operand 1914 states and 6524 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:05,048 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-05 16:42:05,203 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-06-05 16:42:05,343 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-06-05 16:42:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:05,458 INFO L93 Difference]: Finished difference Result 2392 states and 7936 transitions. [2021-06-05 16:42:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 16:42:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:05,462 INFO L225 Difference]: With dead ends: 2392 [2021-06-05 16:42:05,462 INFO L226 Difference]: Without dead ends: 2346 [2021-06-05 16:42:05,462 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1339.9ms TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:42:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-06-05 16:42:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1910. [2021-06-05 16:42:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 3.4038763750654795) internal successors, (6498), 1909 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 6498 transitions. [2021-06-05 16:42:05,485 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 6498 transitions. Word has length 26 [2021-06-05 16:42:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:05,485 INFO L482 AbstractCegarLoop]: Abstraction has 1910 states and 6498 transitions. [2021-06-05 16:42:05,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 6498 transitions. [2021-06-05 16:42:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:05,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:05,487 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:05,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3302 [2021-06-05 16:42:05,688 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:05,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1833133118, now seen corresponding path program 57 times [2021-06-05 16:42:05,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:05,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636732776] [2021-06-05 16:42:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:06,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:06,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636732776] [2021-06-05 16:42:06,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636732776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:06,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862731205] [2021-06-05 16:42:06,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:06,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:42:06,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:42:06,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:06,476 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 16:42:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:06,772 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 16:42:06,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 16:42:06,776 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:06,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:06,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:06,830 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 16:42:06,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 16:42:06,833 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:07,252 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-06-05 16:42:07,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:07,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,289 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 16:42:07,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-05 16:42:07,292 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:07,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,317 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 16:42:07,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-05 16:42:07,319 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:07,676 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-05 16:42:07,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:07,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,713 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:07,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 16:42:07,718 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:07,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:07,734 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:42:07,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:42:07,735 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:08,050 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-05 16:42:08,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:08,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,084 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 16:42:08,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 16:42:08,086 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:08,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,111 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 16:42:08,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-05 16:42:08,113 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:08,409 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-05 16:42:08,409 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,438 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:08,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-06-05 16:42:08,445 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:08,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:08,472 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 16:42:08,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 16:42:08,476 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:09,273 WARN L205 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 124 [2021-06-05 16:42:09,273 INFO L628 ElimStorePlain]: treesize reduction 40, result has 93.4 percent of original size [2021-06-05 16:42:09,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,304 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 16:42:09,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 16:42:09,308 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:09,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,321 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:42:09,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 16:42:09,322 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:09,532 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 16:42:09,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:09,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,569 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 16:42:09,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 16:42:09,571 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:09,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:09,594 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 16:42:09,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 16:42:09,599 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:09,995 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2021-06-05 16:42:09,995 INFO L628 ElimStorePlain]: treesize reduction 33, result has 92.7 percent of original size [2021-06-05 16:42:10,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:10,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:10,018 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 16:42:10,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 16:42:10,020 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:10,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:10,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:10,039 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:10,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 16:42:10,045 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:10,207 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 16:42:10,208 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:10,218 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-05 16:42:10,219 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:801, output treesize:348 [2021-06-05 16:42:10,381 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2021-06-05 16:42:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:10,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862731205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:10,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:10,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-06-05 16:42:10,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819821537] [2021-06-05 16:42:10,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:42:10,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:42:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:42:10,407 INFO L87 Difference]: Start difference. First operand 1910 states and 6498 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:11,499 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 16:42:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:11,770 INFO L93 Difference]: Finished difference Result 2172 states and 7282 transitions. [2021-06-05 16:42:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 16:42:11,771 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:11,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:11,773 INFO L225 Difference]: With dead ends: 2172 [2021-06-05 16:42:11,773 INFO L226 Difference]: Without dead ends: 2157 [2021-06-05 16:42:11,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1626.7ms TimeCoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:42:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2021-06-05 16:42:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1922. [2021-06-05 16:42:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 3.407600208224883) internal successors, (6546), 1921 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 6546 transitions. [2021-06-05 16:42:11,795 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 6546 transitions. Word has length 26 [2021-06-05 16:42:11,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:11,795 INFO L482 AbstractCegarLoop]: Abstraction has 1922 states and 6546 transitions. [2021-06-05 16:42:11,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 6546 transitions. [2021-06-05 16:42:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:11,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:11,797 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:11,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3316,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:11,998 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:11,998 INFO L82 PathProgramCache]: Analyzing trace with hash 179857598, now seen corresponding path program 49 times [2021-06-05 16:42:11,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:11,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727829951] [2021-06-05 16:42:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:12,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:12,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727829951] [2021-06-05 16:42:12,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727829951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:12,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833206444] [2021-06-05 16:42:12,411 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:12,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:42:12,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:12,772 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-05 16:42:12,802 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_307, v_prenex_309]} [2021-06-05 16:42:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:12,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:42:12,806 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:12,906 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 16:42:12,907 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 16:42:12,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:12,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:12,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:12,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:42:12,913 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:12,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:12,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:12,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:42:12,918 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:12,953 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:12,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:12,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:42:12,957 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:12,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:12,992 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:42:12,992 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 16:42:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:13,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833206444] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:13,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:13,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:42:13,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177148226] [2021-06-05 16:42:13,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:42:13,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:13,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:42:13,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:42:13,043 INFO L87 Difference]: Start difference. First operand 1922 states and 6546 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:13,593 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-06-05 16:42:13,929 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 16:42:14,094 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-05 16:42:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:14,251 INFO L93 Difference]: Finished difference Result 2493 states and 8257 transitions. [2021-06-05 16:42:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:42:14,252 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:14,255 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 16:42:14,255 INFO L226 Difference]: Without dead ends: 2478 [2021-06-05 16:42:14,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1507.3ms TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-06-05 16:42:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-06-05 16:42:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 1933. [2021-06-05 16:42:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 3.4078674948240164) internal successors, (6584), 1932 states have internal predecessors, (6584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 6584 transitions. [2021-06-05 16:42:14,279 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 6584 transitions. Word has length 26 [2021-06-05 16:42:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:14,279 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 6584 transitions. [2021-06-05 16:42:14,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:14,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 6584 transitions. [2021-06-05 16:42:14,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:14,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:14,282 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:14,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3385,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:14,482 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:14,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:14,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1730239162, now seen corresponding path program 58 times [2021-06-05 16:42:14,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:14,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181915427] [2021-06-05 16:42:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:14,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:14,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181915427] [2021-06-05 16:42:14,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181915427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:14,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385338785] [2021-06-05 16:42:14,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:14,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:42:14,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:14,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:42:14,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:15,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:42:15,243 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:42:15,250 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:42:15,257 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:42:15,265 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 16:42:15,272 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 16:42:15,279 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:42:15,286 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:42:15,293 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:42:15,300 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:42:15,307 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 16:42:15,314 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:42:15,320 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:42:15,327 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:42:15,333 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:15,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:15,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 16:42:15,337 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:15,360 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-05 16:42:15,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:42:15,361 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 16:42:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:15,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385338785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:15,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:15,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-05 16:42:15,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419095318] [2021-06-05 16:42:15,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:42:15,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:15,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:42:15,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:42:15,388 INFO L87 Difference]: Start difference. First operand 1933 states and 6584 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:15,851 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-06-05 16:42:16,162 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 16:42:16,672 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 16:42:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:17,028 INFO L93 Difference]: Finished difference Result 3085 states and 9838 transitions. [2021-06-05 16:42:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 16:42:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:17,032 INFO L225 Difference]: With dead ends: 3085 [2021-06-05 16:42:17,032 INFO L226 Difference]: Without dead ends: 3042 [2021-06-05 16:42:17,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1587.1ms TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 16:42:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-06-05 16:42:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2025. [2021-06-05 16:42:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2024 states have (on average 3.4234189723320156) internal successors, (6929), 2024 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 6929 transitions. [2021-06-05 16:42:17,060 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 6929 transitions. Word has length 26 [2021-06-05 16:42:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:17,060 INFO L482 AbstractCegarLoop]: Abstraction has 2025 states and 6929 transitions. [2021-06-05 16:42:17,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 6929 transitions. [2021-06-05 16:42:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:17,063 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:17,063 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:17,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3394 [2021-06-05 16:42:17,263 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:17,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:17,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1769727974, now seen corresponding path program 50 times [2021-06-05 16:42:17,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:17,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49438993] [2021-06-05 16:42:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:17,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:17,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49438993] [2021-06-05 16:42:17,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49438993] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:17,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023890929] [2021-06-05 16:42:17,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:17,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:42:17,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:17,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 16:42:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:18,164 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 16:42:18,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:18,742 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:42:18,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:42:18,743 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:18,895 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-05 16:42:18,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:18,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:18,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:18,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:42:18,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:19,064 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-05 16:42:19,064 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:19,088 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:42:19,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:42:19,091 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:19,236 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-05 16:42:19,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:19,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:42:19,257 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:19,403 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-05 16:42:19,403 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:19,423 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:42:19,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:42:19,424 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:19,566 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-05 16:42:19,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:19,589 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:42:19,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 16:42:19,592 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:19,741 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-05 16:42:19,741 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:19,757 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:42:19,763 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:19,895 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 16:42:19,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:19,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:19,916 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:42:19,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:42:19,917 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:20,047 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 16:42:20,047 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:20,069 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:42:20,069 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:381, output treesize:513 [2021-06-05 16:42:20,418 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-05 16:42:20,691 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-05 16:42:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:20,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023890929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:20,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:20,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 16:42:20,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661829576] [2021-06-05 16:42:20,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:42:20,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:20,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:42:20,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:42:20,806 INFO L87 Difference]: Start difference. First operand 2025 states and 6929 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:21,668 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-06-05 16:42:22,408 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-06-05 16:42:23,020 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-06-05 16:42:23,264 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-06-05 16:42:23,745 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 120 [2021-06-05 16:42:24,219 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2021-06-05 16:42:24,699 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2021-06-05 16:42:25,238 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 138 [2021-06-05 16:42:25,621 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2021-06-05 16:42:26,141 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 140 [2021-06-05 16:42:26,490 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-06-05 16:42:26,955 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2021-06-05 16:42:27,416 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-06-05 16:42:27,700 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2021-06-05 16:42:28,291 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2021-06-05 16:42:28,605 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 42 [2021-06-05 16:42:29,041 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 57 [2021-06-05 16:42:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:29,142 INFO L93 Difference]: Finished difference Result 2870 states and 9420 transitions. [2021-06-05 16:42:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 16:42:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:29,147 INFO L225 Difference]: With dead ends: 2870 [2021-06-05 16:42:29,147 INFO L226 Difference]: Without dead ends: 2855 [2021-06-05 16:42:29,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 8626.1ms TimeCoverageRelationStatistics Valid=408, Invalid=2142, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:42:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2021-06-05 16:42:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2033. [2021-06-05 16:42:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 3.4247047244094486) internal successors, (6959), 2032 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 6959 transitions. [2021-06-05 16:42:29,178 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 6959 transitions. Word has length 26 [2021-06-05 16:42:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:29,178 INFO L482 AbstractCegarLoop]: Abstraction has 2033 states and 6959 transitions. [2021-06-05 16:42:29,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 6959 transitions. [2021-06-05 16:42:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:29,181 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:29,181 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:29,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3500,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:29,381 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:29,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash 719147274, now seen corresponding path program 51 times [2021-06-05 16:42:29,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:29,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253859843] [2021-06-05 16:42:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:29,634 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-05 16:42:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:29,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:29,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253859843] [2021-06-05 16:42:29,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253859843] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:29,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138887797] [2021-06-05 16:42:29,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:29,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:42:29,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:29,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:42:29,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:30,130 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 16:42:30,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:42:30,185 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:30,293 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 16:42:30,293 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,305 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:42:30,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:42:30,307 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:30,413 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 16:42:30,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,425 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:42:30,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:42:30,426 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:30,526 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,538 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:42:30,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:42:30,539 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:30,638 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,654 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:42:30,656 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:30,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,761 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:42:30,763 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:30,859 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,868 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:42:30,871 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:30,971 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:30,979 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:30,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:42:30,983 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:31,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:31,071 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:42:31,071 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 16:42:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:31,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138887797] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:31,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:31,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:42:31,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511209274] [2021-06-05 16:42:31,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:42:31,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:31,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:42:31,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:42:31,241 INFO L87 Difference]: Start difference. First operand 2033 states and 6959 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:31,604 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 16:42:32,515 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 16:42:32,657 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-06-05 16:42:32,853 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-05 16:42:33,022 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-06-05 16:42:33,372 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-05 16:42:33,570 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 16:42:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:33,698 INFO L93 Difference]: Finished difference Result 2982 states and 9848 transitions. [2021-06-05 16:42:33,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 16:42:33,698 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:33,702 INFO L225 Difference]: With dead ends: 2982 [2021-06-05 16:42:33,702 INFO L226 Difference]: Without dead ends: 2967 [2021-06-05 16:42:33,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2622.8ms TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 16:42:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-06-05 16:42:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2028. [2021-06-05 16:42:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 3.4257523433645782) internal successors, (6944), 2027 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 6944 transitions. [2021-06-05 16:42:33,730 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 6944 transitions. Word has length 26 [2021-06-05 16:42:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:33,730 INFO L482 AbstractCegarLoop]: Abstraction has 2028 states and 6944 transitions. [2021-06-05 16:42:33,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 6944 transitions. [2021-06-05 16:42:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:33,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:33,732 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:33,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3566,110 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:33,933 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1956232686, now seen corresponding path program 59 times [2021-06-05 16:42:33,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:33,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246960398] [2021-06-05 16:42:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:34,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:34,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246960398] [2021-06-05 16:42:34,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246960398] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:34,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703538612] [2021-06-05 16:42:34,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:34,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:42:34,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:34,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:42:34,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:34,636 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 16:42:34,981 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-06-05 16:42:35,213 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2021-06-05 16:42:35,435 INFO L446 ElimStorePlain]: Different costs {20=[v_prenex_385], 27=[A]} [2021-06-05 16:42:35,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:42:35,446 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:35,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 16:42:35,457 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:35,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:42:35,469 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:35,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 16:42:35,477 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:35,606 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-05 16:42:35,607 INFO L628 ElimStorePlain]: treesize reduction 114, result has 56.3 percent of original size [2021-06-05 16:42:35,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 16:42:35,612 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:35,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:35,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:35,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:42:35,617 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:35,661 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:35,663 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 16:42:35,663 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:399, output treesize:89 [2021-06-05 16:42:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:35,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703538612] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:35,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:35,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 18 [2021-06-05 16:42:35,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285369636] [2021-06-05 16:42:35,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:42:35,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:35,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:42:35,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:42:35,739 INFO L87 Difference]: Start difference. First operand 2028 states and 6944 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:36,512 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 16:42:36,991 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-06-05 16:42:37,205 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 16:42:37,555 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 71 [2021-06-05 16:42:37,928 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2021-06-05 16:42:38,230 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2021-06-05 16:42:38,621 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2021-06-05 16:42:38,995 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2021-06-05 16:42:39,245 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 47 [2021-06-05 16:42:39,655 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2021-06-05 16:42:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:39,763 INFO L93 Difference]: Finished difference Result 3633 states and 11658 transitions. [2021-06-05 16:42:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 16:42:39,764 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:39,769 INFO L225 Difference]: With dead ends: 3633 [2021-06-05 16:42:39,769 INFO L226 Difference]: Without dead ends: 3546 [2021-06-05 16:42:39,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 4308.2ms TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 16:42:39,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-06-05 16:42:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2151. [2021-06-05 16:42:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2150 states have (on average 3.4288372093023254) internal successors, (7372), 2150 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 7372 transitions. [2021-06-05 16:42:39,803 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 7372 transitions. Word has length 26 [2021-06-05 16:42:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:39,803 INFO L482 AbstractCegarLoop]: Abstraction has 2151 states and 7372 transitions. [2021-06-05 16:42:39,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 7372 transitions. [2021-06-05 16:42:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:39,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:39,806 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:40,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3581 [2021-06-05 16:42:40,006 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:40,006 INFO L82 PathProgramCache]: Analyzing trace with hash -505085958, now seen corresponding path program 60 times [2021-06-05 16:42:40,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:40,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838099103] [2021-06-05 16:42:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:40,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:40,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838099103] [2021-06-05 16:42:40,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838099103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:40,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734800200] [2021-06-05 16:42:40,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:40,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:42:40,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:40,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:42:40,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:40,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,582 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:40,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 53 [2021-06-05 16:42:40,592 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-05 16:42:40,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,625 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 16:42:40,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 44 [2021-06-05 16:42:40,629 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,664 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 16:42:40,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 40 [2021-06-05 16:42:40,668 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,706 INFO L354 Elim1Store]: treesize reduction 10, result has 75.6 percent of original size [2021-06-05 16:42:40,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 49 [2021-06-05 16:42:40,711 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,737 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 16:42:40,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 27 [2021-06-05 16:42:40,739 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,756 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2021-06-05 16:42:40,757 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,775 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:42:40,775 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,793 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 16:42:40,794 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,810 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 16:42:40,811 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,828 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:42:40,828 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,845 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 1 [2021-06-05 16:42:40,846 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,862 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:42:40,863 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,879 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 16:42:40,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:42:40,880 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,905 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 16:42:40,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 20 [2021-06-05 16:42:40,906 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:40,923 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 16:42:40,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 16:42:40,924 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:40,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 16:42:40,928 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:41,022 INFO L628 ElimStorePlain]: treesize reduction 130, result has 42.2 percent of original size [2021-06-05 16:42:41,023 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 16:42:41,023 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:833, output treesize:95 [2021-06-05 16:42:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:41,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734800200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:41,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:41,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-06-05 16:42:41,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492132281] [2021-06-05 16:42:41,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:42:41,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:41,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:42:41,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:42:41,185 INFO L87 Difference]: Start difference. First operand 2151 states and 7372 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:42,439 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2021-06-05 16:42:42,808 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 16:42:43,021 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-06-05 16:42:43,340 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-06-05 16:42:43,624 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2021-06-05 16:42:44,029 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-06-05 16:42:44,507 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2021-06-05 16:42:44,672 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-06-05 16:42:44,989 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2021-06-05 16:42:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:45,101 INFO L93 Difference]: Finished difference Result 3952 states and 12614 transitions. [2021-06-05 16:42:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 16:42:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:45,106 INFO L225 Difference]: With dead ends: 3952 [2021-06-05 16:42:45,107 INFO L226 Difference]: Without dead ends: 3864 [2021-06-05 16:42:45,107 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 3620.7ms TimeCoverageRelationStatistics Valid=560, Invalid=2980, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:42:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2021-06-05 16:42:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 2137. [2021-06-05 16:42:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2136 states have (on average 3.431179775280899) internal successors, (7329), 2136 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 7329 transitions. [2021-06-05 16:42:45,140 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 7329 transitions. Word has length 26 [2021-06-05 16:42:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:45,140 INFO L482 AbstractCegarLoop]: Abstraction has 2137 states and 7329 transitions. [2021-06-05 16:42:45,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 7329 transitions. [2021-06-05 16:42:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:45,142 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:45,142 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:45,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3603 [2021-06-05 16:42:45,345 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1912368818, now seen corresponding path program 52 times [2021-06-05 16:42:45,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:45,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536306771] [2021-06-05 16:42:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:45,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:45,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536306771] [2021-06-05 16:42:45,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536306771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:45,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196389948] [2021-06-05 16:42:45,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:45,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:42:45,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:45,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:42:45,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:46,097 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 16:42:46,315 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_397, v_prenex_398]} [2021-06-05 16:42:46,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:46,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:42:46,321 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:46,421 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 16:42:46,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:46,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:46,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:42:46,425 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:46,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:46,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:46,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:46,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:46,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:42:46,472 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:46,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:46,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:46,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:42:46,477 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:46,510 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:46,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:42:46,512 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 16:42:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:46,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196389948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:46,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:46,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:42:46,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827111060] [2021-06-05 16:42:46,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:42:46,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:42:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:42:46,565 INFO L87 Difference]: Start difference. First operand 2137 states and 7329 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:47,409 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-05 16:42:47,567 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-06-05 16:42:47,933 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 16:42:48,147 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2021-06-05 16:42:48,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:48,327 INFO L93 Difference]: Finished difference Result 2703 states and 9088 transitions. [2021-06-05 16:42:48,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 16:42:48,328 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:48,331 INFO L225 Difference]: With dead ends: 2703 [2021-06-05 16:42:48,331 INFO L226 Difference]: Without dead ends: 2688 [2021-06-05 16:42:48,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2072.3ms TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:42:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-06-05 16:42:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2150. [2021-06-05 16:42:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 3.4290367612843182) internal successors, (7369), 2149 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 7369 transitions. [2021-06-05 16:42:48,356 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 7369 transitions. Word has length 26 [2021-06-05 16:42:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:48,356 INFO L482 AbstractCegarLoop]: Abstraction has 2150 states and 7369 transitions. [2021-06-05 16:42:48,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 7369 transitions. [2021-06-05 16:42:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:48,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:48,359 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:48,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3638,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:48,559 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash 294836038, now seen corresponding path program 53 times [2021-06-05 16:42:48,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:48,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406686000] [2021-06-05 16:42:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:48,816 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-05 16:42:48,933 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-06-05 16:42:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:49,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:49,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406686000] [2021-06-05 16:42:49,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406686000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:49,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167779237] [2021-06-05 16:42:49,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:49,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:42:49,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:49,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 16:42:49,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:49,592 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 16:42:49,699 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_421, v_prenex_410, v_prenex_412], 6=[v_prenex_415, v_prenex_405, v_prenex_418, v_prenex_408]} [2021-06-05 16:42:49,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:49,726 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:42:49,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 16:42:49,727 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:50,069 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 156 [2021-06-05 16:42:50,070 INFO L628 ElimStorePlain]: treesize reduction 226, result has 61.6 percent of original size [2021-06-05 16:42:50,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:50,092 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:42:50,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 16:42:50,093 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:50,231 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-06-05 16:42:50,232 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:50,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:50,254 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 16:42:50,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 16:42:50,258 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:50,391 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 16:42:50,391 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:50,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:50,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:50,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 16:42:50,413 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:50,681 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2021-06-05 16:42:50,681 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.3 percent of original size [2021-06-05 16:42:50,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:50,699 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:50,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 16:42:50,704 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:50,826 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 16:42:50,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:50,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:50,844 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:50,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 16:42:50,849 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:51,080 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-06-05 16:42:51,081 INFO L628 ElimStorePlain]: treesize reduction 12, result has 96.0 percent of original size [2021-06-05 16:42:51,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:51,100 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:42:51,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 16:42:51,102 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:51,222 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 16:42:51,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:51,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:51,240 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 16:42:51,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:42:51,242 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:51,349 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 16:42:51,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:51,366 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:42:51,366 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:599, output treesize:334 [2021-06-05 16:42:51,571 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-06-05 16:42:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:51,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167779237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:51,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:51,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 16:42:51,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707550842] [2021-06-05 16:42:51,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 16:42:51,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:51,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 16:42:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:42:51,666 INFO L87 Difference]: Start difference. First operand 2150 states and 7369 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:52,013 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-06-05 16:42:52,311 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 32 [2021-06-05 16:42:52,756 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2021-06-05 16:42:52,959 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-05 16:42:53,280 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2021-06-05 16:42:53,486 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 16:42:53,855 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 16:42:54,087 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 16:42:54,503 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2021-06-05 16:42:54,850 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2021-06-05 16:42:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:54,909 INFO L93 Difference]: Finished difference Result 3064 states and 10226 transitions. [2021-06-05 16:42:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:42:54,910 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:54,914 INFO L225 Difference]: With dead ends: 3064 [2021-06-05 16:42:54,914 INFO L226 Difference]: Without dead ends: 3049 [2021-06-05 16:42:54,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 3640.8ms TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 16:42:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-06-05 16:42:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2147. [2021-06-05 16:42:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 3.428238583410997) internal successors, (7357), 2146 states have internal predecessors, (7357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7357 transitions. [2021-06-05 16:42:54,944 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7357 transitions. Word has length 26 [2021-06-05 16:42:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:54,944 INFO L482 AbstractCegarLoop]: Abstraction has 2147 states and 7357 transitions. [2021-06-05 16:42:54,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7357 transitions. [2021-06-05 16:42:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:54,946 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:54,946 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:55,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3648 [2021-06-05 16:42:55,147 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:55,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1962058946, now seen corresponding path program 54 times [2021-06-05 16:42:55,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:55,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568211231] [2021-06-05 16:42:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:55,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:55,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568211231] [2021-06-05 16:42:55,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568211231] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:55,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028861278] [2021-06-05 16:42:55,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:55,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:42:55,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:42:55,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 16:42:55,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:55,866 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-06-05 16:42:55,927 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_426, v_prenex_425], 6=[A, v_prenex_427]} [2021-06-05 16:42:55,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:55,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:55,941 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:55,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 16:42:55,942 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:55,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:55,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:55,954 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:42:55,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-06-05 16:42:55,956 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:56,089 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 16:42:56,089 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,102 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-06-05 16:42:56,107 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:56,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,119 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:42:56,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2021-06-05 16:42:56,121 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:56,243 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 16:42:56,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:56,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:56,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 16:42:56,262 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:56,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:56,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,274 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:42:56,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 24 [2021-06-05 16:42:56,275 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:56,382 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 16:42:56,382 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:56,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:56,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 16:42:56,399 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:56,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:56,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:56,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 16:42:56,411 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:56,508 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:42:56,515 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:42:56,515 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:409, output treesize:246 [2021-06-05 16:42:56,669 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-06-05 16:42:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:56,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028861278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:56,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:56,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:42:56,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801384774] [2021-06-05 16:42:56,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:42:56,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:56,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:42:56,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:42:56,756 INFO L87 Difference]: Start difference. First operand 2147 states and 7357 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:57,466 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-06-05 16:42:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:42:58,245 INFO L93 Difference]: Finished difference Result 2844 states and 9528 transitions. [2021-06-05 16:42:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 16:42:58,245 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:42:58,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:42:58,249 INFO L225 Difference]: With dead ends: 2844 [2021-06-05 16:42:58,250 INFO L226 Difference]: Without dead ends: 2819 [2021-06-05 16:42:58,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1782.7ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:42:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2021-06-05 16:42:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2143. [2021-06-05 16:42:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2143 states, 2142 states have (on average 3.429971988795518) internal successors, (7347), 2142 states have internal predecessors, (7347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 7347 transitions. [2021-06-05 16:42:58,276 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 7347 transitions. Word has length 26 [2021-06-05 16:42:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:42:58,276 INFO L482 AbstractCegarLoop]: Abstraction has 2143 states and 7347 transitions. [2021-06-05 16:42:58,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:42:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 7347 transitions. [2021-06-05 16:42:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:42:58,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:42:58,279 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:42:58,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3694 [2021-06-05 16:42:58,480 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:42:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:42:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash 935709652, now seen corresponding path program 61 times [2021-06-05 16:42:58,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:42:58,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695973105] [2021-06-05 16:42:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:42:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:58,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:42:58,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695973105] [2021-06-05 16:42:58,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695973105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:58,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682235366] [2021-06-05 16:42:58,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:42:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:42:58,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:42:58,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:42:59,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:42:59,260 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:42:59,267 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 16:42:59,274 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:42:59,281 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 16:42:59,288 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 16:42:59,295 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 16:42:59,302 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 16:42:59,310 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:42:59,317 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 16:42:59,324 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 16:42:59,331 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:42:59,337 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:42:59,344 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:42:59,351 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:42:59,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:42:59,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 16:42:59,355 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:42:59,392 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-05 16:42:59,394 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 16:42:59,394 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 16:42:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:42:59,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682235366] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:42:59,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:42:59,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 16:42:59,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307372784] [2021-06-05 16:42:59,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:42:59,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:42:59,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:42:59,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:42:59,409 INFO L87 Difference]: Start difference. First operand 2143 states and 7347 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:00,655 INFO L93 Difference]: Finished difference Result 2873 states and 9612 transitions. [2021-06-05 16:43:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 16:43:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:43:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:00,659 INFO L225 Difference]: With dead ends: 2873 [2021-06-05 16:43:00,659 INFO L226 Difference]: Without dead ends: 2851 [2021-06-05 16:43:00,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1248.6ms TimeCoverageRelationStatistics Valid=334, Invalid=1148, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 16:43:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-06-05 16:43:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2169. [2021-06-05 16:43:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 3.4321955719557193) internal successors, (7441), 2168 states have internal predecessors, (7441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 7441 transitions. [2021-06-05 16:43:00,698 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 7441 transitions. Word has length 26 [2021-06-05 16:43:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:00,699 INFO L482 AbstractCegarLoop]: Abstraction has 2169 states and 7441 transitions. [2021-06-05 16:43:00,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 7441 transitions. [2021-06-05 16:43:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:43:00,701 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:00,702 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:00,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3715 [2021-06-05 16:43:00,902 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1861203518, now seen corresponding path program 62 times [2021-06-05 16:43:00,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:00,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809166008] [2021-06-05 16:43:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:01,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:01,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809166008] [2021-06-05 16:43:01,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809166008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:01,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008955242] [2021-06-05 16:43:01,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:01,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:01,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:01,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:43:01,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:01,444 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 16:43:01,490 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_428, v_prenex_432], 5=[A, v_prenex_430]} [2021-06-05 16:43:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:01,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:01,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 16:43:01,499 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:01,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:01,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 16:43:01,505 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:01,584 INFO L628 ElimStorePlain]: treesize reduction 147, result has 42.6 percent of original size [2021-06-05 16:43:01,584 INFO L518 ElimStorePlain]: Eliminatee v_prenex_432 vanished before elimination [2021-06-05 16:43:01,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:01,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:01,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 16:43:01,589 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:01,615 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:01,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:01,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:01,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 16:43:01,620 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:01,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:01,645 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 16:43:01,645 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:314, output treesize:33 [2021-06-05 16:43:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:01,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008955242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:01,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:01,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 16:43:01,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594245079] [2021-06-05 16:43:01,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:43:01,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:43:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:43:01,688 INFO L87 Difference]: Start difference. First operand 2169 states and 7441 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:03,136 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 16:43:03,398 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 16:43:03,553 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 16:43:03,691 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-06-05 16:43:03,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:03,913 INFO L93 Difference]: Finished difference Result 3222 states and 10652 transitions. [2021-06-05 16:43:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 16:43:03,913 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:43:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:03,917 INFO L225 Difference]: With dead ends: 3222 [2021-06-05 16:43:03,917 INFO L226 Difference]: Without dead ends: 3182 [2021-06-05 16:43:03,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 2218.3ms TimeCoverageRelationStatistics Valid=527, Invalid=1825, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 16:43:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2021-06-05 16:43:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 2156. [2021-06-05 16:43:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 3.432018561484919) internal successors, (7396), 2155 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 7396 transitions. [2021-06-05 16:43:03,944 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 7396 transitions. Word has length 26 [2021-06-05 16:43:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:03,944 INFO L482 AbstractCegarLoop]: Abstraction has 2156 states and 7396 transitions. [2021-06-05 16:43:03,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 7396 transitions. [2021-06-05 16:43:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:43:03,947 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:03,947 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:04,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3821,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:04,147 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:04,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1633671286, now seen corresponding path program 55 times [2021-06-05 16:43:04,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:04,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021197621] [2021-06-05 16:43:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:04,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:04,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021197621] [2021-06-05 16:43:04,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021197621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:04,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128223756] [2021-06-05 16:43:04,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:04,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:43:04,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:04,949 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 16:43:05,180 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-06-05 16:43:05,232 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_443, v_prenex_444], 2=[A, v_prenex_445]} [2021-06-05 16:43:05,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:05,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 16:43:05,238 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:05,349 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-06-05 16:43:05,350 INFO L628 ElimStorePlain]: treesize reduction 54, result has 72.3 percent of original size [2021-06-05 16:43:05,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:05,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:43:05,354 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:05,403 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:05,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:05,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:05,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:43:05,407 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:05,448 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:05,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:05,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:05,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:05,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:43:05,454 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:05,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:05,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:43:05,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:43:05,458 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:05,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:05,493 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:43:05,493 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:207, output treesize:51 [2021-06-05 16:43:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:05,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128223756] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:05,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:05,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:43:05,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443906677] [2021-06-05 16:43:05,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:43:05,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:05,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:43:05,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:43:05,546 INFO L87 Difference]: Start difference. First operand 2156 states and 7396 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:06,391 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 16:43:06,781 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2021-06-05 16:43:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:06,914 INFO L93 Difference]: Finished difference Result 2279 states and 7717 transitions. [2021-06-05 16:43:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 16:43:06,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:43:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:06,918 INFO L225 Difference]: With dead ends: 2279 [2021-06-05 16:43:06,918 INFO L226 Difference]: Without dead ends: 2264 [2021-06-05 16:43:06,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1874.0ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 16:43:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-06-05 16:43:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2159. [2021-06-05 16:43:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 2158 states have (on average 3.4300278035217793) internal successors, (7402), 2158 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 7402 transitions. [2021-06-05 16:43:06,942 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 7402 transitions. Word has length 26 [2021-06-05 16:43:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:06,942 INFO L482 AbstractCegarLoop]: Abstraction has 2159 states and 7402 transitions. [2021-06-05 16:43:06,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 7402 transitions. [2021-06-05 16:43:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:43:06,944 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:06,945 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:07,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3835,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:07,145 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:07,145 INFO L82 PathProgramCache]: Analyzing trace with hash 16138506, now seen corresponding path program 56 times [2021-06-05 16:43:07,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:07,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372381108] [2021-06-05 16:43:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:07,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:07,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372381108] [2021-06-05 16:43:07,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372381108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:07,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327782332] [2021-06-05 16:43:07,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:07,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:07,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:07,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:43:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:08,001 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 16:43:08,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,056 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:43:08,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:43:08,057 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,163 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 16:43:08,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,176 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:43:08,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:43:08,177 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,282 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 16:43:08,283 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,294 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:43:08,297 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,408 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:43:08,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:43:08,410 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,504 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:43:08,517 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,615 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,626 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:43:08,628 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,735 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:43:08,739 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:08,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:43:08,837 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:08,920 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:08,926 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:43:08,927 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 16:43:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:09,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327782332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:09,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:09,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:43:09,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207269021] [2021-06-05 16:43:09,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:43:09,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:09,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:43:09,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:43:09,107 INFO L87 Difference]: Start difference. First operand 2159 states and 7402 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:09,409 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 16:43:10,170 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 16:43:10,625 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 16:43:10,925 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-06-05 16:43:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:11,128 INFO L93 Difference]: Finished difference Result 3021 states and 10110 transitions. [2021-06-05 16:43:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 16:43:11,128 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:43:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:11,132 INFO L225 Difference]: With dead ends: 3021 [2021-06-05 16:43:11,132 INFO L226 Difference]: Without dead ends: 3006 [2021-06-05 16:43:11,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2344.5ms TimeCoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:43:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-06-05 16:43:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2153. [2021-06-05 16:43:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 3.427973977695167) internal successors, (7377), 2152 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 7377 transitions. [2021-06-05 16:43:11,161 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 7377 transitions. Word has length 26 [2021-06-05 16:43:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:11,161 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 7377 transitions. [2021-06-05 16:43:11,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 7377 transitions. [2021-06-05 16:43:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:43:11,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:11,163 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:11,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3847 [2021-06-05 16:43:11,365 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:11,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:11,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2054210818, now seen corresponding path program 57 times [2021-06-05 16:43:11,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:11,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166586332] [2021-06-05 16:43:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:11,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:11,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166586332] [2021-06-05 16:43:11,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166586332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:11,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430988004] [2021-06-05 16:43:11,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:11,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:43:11,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 16:43:11,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:12,123 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_469], 3=[v_prenex_467, v_prenex_468]} [2021-06-05 16:43:12,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,136 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:43:12,137 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,147 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:43:12,149 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,282 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 16:43:12,283 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,296 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:43:12,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:43:12,298 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,308 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:43:12,309 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,434 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 16:43:12,434 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,447 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 16:43:12,450 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,461 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:43:12,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 16:43:12,462 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,572 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 16:43:12,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,584 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 16:43:12,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 16:43:12,585 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:12,593 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 16:43:12,596 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:12,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:12,698 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:43:12,698 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:365, output treesize:194 [2021-06-05 16:43:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:12,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430988004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:12,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:12,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:43:12,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615277552] [2021-06-05 16:43:12,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:43:12,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:43:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:43:12,874 INFO L87 Difference]: Start difference. First operand 2153 states and 7377 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:13,988 INFO L93 Difference]: Finished difference Result 2848 states and 9544 transitions. [2021-06-05 16:43:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 16:43:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:43:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:13,992 INFO L225 Difference]: With dead ends: 2848 [2021-06-05 16:43:13,992 INFO L226 Difference]: Without dead ends: 2823 [2021-06-05 16:43:13,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1429.7ms TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 16:43:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-06-05 16:43:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2129. [2021-06-05 16:43:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2128 states have (on average 3.425751879699248) internal successors, (7290), 2128 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 7290 transitions. [2021-06-05 16:43:14,018 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 7290 transitions. Word has length 26 [2021-06-05 16:43:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:14,018 INFO L482 AbstractCegarLoop]: Abstraction has 2129 states and 7290 transitions. [2021-06-05 16:43:14,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 7290 transitions. [2021-06-05 16:43:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:43:14,020 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:14,020 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:14,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3864,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:14,222 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash 243784254, now seen corresponding path program 58 times [2021-06-05 16:43:14,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:14,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491501019] [2021-06-05 16:43:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:14,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:14,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491501019] [2021-06-05 16:43:14,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491501019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:14,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928529997] [2021-06-05 16:43:14,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:14,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:43:14,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:14,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:43:14,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:14,946 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-05 16:43:15,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,056 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 16:43:15,057 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,067 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:43:15,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:43:15,068 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,192 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 16:43:15,192 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:43:15,207 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,217 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 16:43:15,218 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,332 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 16:43:15,332 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,344 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:43:15,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 16:43:15,345 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,354 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 16:43:15,357 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,460 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 16:43:15,460 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,471 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 16:43:15,475 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:15,483 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 16:43:15,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 16:43:15,485 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:15,577 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:15,583 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 16:43:15,583 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:341, output treesize:174 [2021-06-05 16:43:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:15,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928529997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:15,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:15,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 16:43:15,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569382796] [2021-06-05 16:43:15,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 16:43:15,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:15,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 16:43:15,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:43:15,765 INFO L87 Difference]: Start difference. First operand 2129 states and 7290 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:16,826 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 16:43:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:16,903 INFO L93 Difference]: Finished difference Result 2750 states and 9269 transitions. [2021-06-05 16:43:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:43:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:43:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:16,908 INFO L225 Difference]: With dead ends: 2750 [2021-06-05 16:43:16,908 INFO L226 Difference]: Without dead ends: 2735 [2021-06-05 16:43:16,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1391.1ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-06-05 16:43:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-05 16:43:16,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2129. [2021-06-05 16:43:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2128 states have (on average 3.425751879699248) internal successors, (7290), 2128 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 7290 transitions. [2021-06-05 16:43:16,938 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 7290 transitions. Word has length 26 [2021-06-05 16:43:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:16,938 INFO L482 AbstractCegarLoop]: Abstraction has 2129 states and 7290 transitions. [2021-06-05 16:43:16,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 7290 transitions. [2021-06-05 16:43:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 16:43:16,941 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:16,941 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:17,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3897,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:17,154 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:17,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1496131378, now seen corresponding path program 63 times [2021-06-05 16:43:17,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:17,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263708221] [2021-06-05 16:43:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:17,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:17,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263708221] [2021-06-05 16:43:17,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263708221] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:17,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411145051] [2021-06-05 16:43:17,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:17,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:43:17,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:17,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 16:43:17,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:17,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:17,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:17,981 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 16:43:17,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 16:43:17,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:17,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,008 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 16:43:18,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 16:43:18,009 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:18,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-06-05 16:43:18,038 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,064 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 16:43:18,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-06-05 16:43:18,068 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,091 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 16:43:18,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-05 16:43:18,092 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,114 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 16:43:18,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-05 16:43:18,116 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:18,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 16:43:18,146 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,171 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 16:43:18,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 16:43:18,175 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,190 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:43:18,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 16:43:18,190 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:43:18,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 16:43:18,220 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,236 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:43:18,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 16:43:18,236 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,252 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:43:18,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 16:43:18,252 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,268 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:43:18,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 16:43:18,269 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,284 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:43:18,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 16:43:18,284 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,298 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:43:18,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 16:43:18,299 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:43:18,307 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 16:43:18,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 16:43:18,308 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:43:18,453 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2021-06-05 16:43:18,453 INFO L628 ElimStorePlain]: treesize reduction 181, result has 33.9 percent of original size [2021-06-05 16:43:18,456 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 16:43:18,456 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:83 [2021-06-05 16:43:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:18,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411145051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:18,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:18,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 16:43:18,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073811583] [2021-06-05 16:43:18,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 16:43:18,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:18,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 16:43:18,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:43:18,550 INFO L87 Difference]: Start difference. First operand 2129 states and 7290 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:20,843 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-06-05 16:43:21,115 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2021-06-05 16:43:21,309 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-06-05 16:43:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:21,402 INFO L93 Difference]: Finished difference Result 3313 states and 10903 transitions. [2021-06-05 16:43:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 16:43:21,402 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 16:43:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:21,407 INFO L225 Difference]: With dead ends: 3313 [2021-06-05 16:43:21,407 INFO L226 Difference]: Without dead ends: 3269 [2021-06-05 16:43:21,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 2756.4ms TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 16:43:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-06-05 16:43:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2147. [2021-06-05 16:43:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 3.4221808014911463) internal successors, (7344), 2146 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7344 transitions. [2021-06-05 16:43:21,437 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7344 transitions. Word has length 26 [2021-06-05 16:43:21,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:21,437 INFO L482 AbstractCegarLoop]: Abstraction has 2147 states and 7344 transitions. [2021-06-05 16:43:21,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7344 transitions. [2021-06-05 16:43:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:21,440 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:21,440 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:21,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3930,122 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:21,641 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:21,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1868598568, now seen corresponding path program 59 times [2021-06-05 16:43:21,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:21,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181446132] [2021-06-05 16:43:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:21,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:21,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181446132] [2021-06-05 16:43:21,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181446132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:21,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938519671] [2021-06-05 16:43:21,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:21,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:43:21,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:21,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:21,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:21,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938519671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:21,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:21,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:43:21,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096758628] [2021-06-05 16:43:21,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:43:21,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:21,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:43:21,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:43:21,793 INFO L87 Difference]: Start difference. First operand 2147 states and 7344 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:22,723 INFO L93 Difference]: Finished difference Result 5131 states and 15966 transitions. [2021-06-05 16:43:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 16:43:22,723 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:22,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:22,730 INFO L225 Difference]: With dead ends: 5131 [2021-06-05 16:43:22,730 INFO L226 Difference]: Without dead ends: 5131 [2021-06-05 16:43:22,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 496.9ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 16:43:22,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2021-06-05 16:43:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 2340. [2021-06-05 16:43:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2339 states have (on average 3.469431380932022) internal successors, (8115), 2339 states have internal predecessors, (8115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 8115 transitions. [2021-06-05 16:43:22,774 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 8115 transitions. Word has length 28 [2021-06-05 16:43:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:22,774 INFO L482 AbstractCegarLoop]: Abstraction has 2340 states and 8115 transitions. [2021-06-05 16:43:22,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 8115 transitions. [2021-06-05 16:43:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:22,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:22,777 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:22,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4066,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:22,977 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1450049884, now seen corresponding path program 60 times [2021-06-05 16:43:22,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:22,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540156298] [2021-06-05 16:43:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:23,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:23,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540156298] [2021-06-05 16:43:23,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540156298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:23,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016465652] [2021-06-05 16:43:23,016 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:23,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:43:23,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:23,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:23,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:23,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016465652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:23,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:23,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 16:43:23,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928803462] [2021-06-05 16:43:23,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:43:23,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:23,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:43:23,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:43:23,138 INFO L87 Difference]: Start difference. First operand 2340 states and 8115 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:24,281 INFO L93 Difference]: Finished difference Result 6763 states and 20717 transitions. [2021-06-05 16:43:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 16:43:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:24,291 INFO L225 Difference]: With dead ends: 6763 [2021-06-05 16:43:24,291 INFO L226 Difference]: Without dead ends: 6763 [2021-06-05 16:43:24,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 675.5ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 16:43:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-06-05 16:43:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 2351. [2021-06-05 16:43:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2350 states have (on average 3.4761702127659575) internal successors, (8169), 2350 states have internal predecessors, (8169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 8169 transitions. [2021-06-05 16:43:24,347 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 8169 transitions. Word has length 28 [2021-06-05 16:43:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:24,348 INFO L482 AbstractCegarLoop]: Abstraction has 2351 states and 8169 transitions. [2021-06-05 16:43:24,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 8169 transitions. [2021-06-05 16:43:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:24,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:24,350 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:24,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4067 [2021-06-05 16:43:24,551 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:24,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2017001964, now seen corresponding path program 61 times [2021-06-05 16:43:24,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:24,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498110725] [2021-06-05 16:43:24,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:24,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:24,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498110725] [2021-06-05 16:43:24,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498110725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:24,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979000759] [2021-06-05 16:43:24,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:24,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:24,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:24,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979000759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:24,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:24,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 16:43:24,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620256277] [2021-06-05 16:43:24,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:43:24,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:24,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:43:24,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:43:24,710 INFO L87 Difference]: Start difference. First operand 2351 states and 8169 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:25,833 INFO L93 Difference]: Finished difference Result 6150 states and 19231 transitions. [2021-06-05 16:43:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 16:43:25,833 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:25,842 INFO L225 Difference]: With dead ends: 6150 [2021-06-05 16:43:25,842 INFO L226 Difference]: Without dead ends: 6150 [2021-06-05 16:43:25,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 668.4ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 16:43:25,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-06-05 16:43:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 2299. [2021-06-05 16:43:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 3.4538729329852047) internal successors, (7937), 2298 states have internal predecessors, (7937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 7937 transitions. [2021-06-05 16:43:25,895 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 7937 transitions. Word has length 28 [2021-06-05 16:43:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:25,895 INFO L482 AbstractCegarLoop]: Abstraction has 2299 states and 7937 transitions. [2021-06-05 16:43:25,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 7937 transitions. [2021-06-05 16:43:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:25,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:25,898 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:26,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-05 16:43:26,104 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:26,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1095937010, now seen corresponding path program 62 times [2021-06-05 16:43:26,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:26,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258342375] [2021-06-05 16:43:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:26,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:26,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258342375] [2021-06-05 16:43:26,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258342375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:26,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46092008] [2021-06-05 16:43:26,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:26,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:26,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:26,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:26,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:26,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46092008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:26,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:26,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:43:26,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007146499] [2021-06-05 16:43:26,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:43:26,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:26,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:43:26,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:43:26,255 INFO L87 Difference]: Start difference. First operand 2299 states and 7937 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:27,269 INFO L93 Difference]: Finished difference Result 5206 states and 16106 transitions. [2021-06-05 16:43:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 16:43:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:27,276 INFO L225 Difference]: With dead ends: 5206 [2021-06-05 16:43:27,276 INFO L226 Difference]: Without dead ends: 5206 [2021-06-05 16:43:27,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 600.1ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 16:43:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2021-06-05 16:43:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 2309. [2021-06-05 16:43:27,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 3.450173310225303) internal successors, (7963), 2308 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 7963 transitions. [2021-06-05 16:43:27,318 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 7963 transitions. Word has length 28 [2021-06-05 16:43:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:27,318 INFO L482 AbstractCegarLoop]: Abstraction has 2309 states and 7963 transitions. [2021-06-05 16:43:27,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 7963 transitions. [2021-06-05 16:43:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:27,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:27,321 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:27,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,126 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:27,525 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:27,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1989400020, now seen corresponding path program 64 times [2021-06-05 16:43:27,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:27,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308495204] [2021-06-05 16:43:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:27,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:27,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308495204] [2021-06-05 16:43:27,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308495204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:27,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023921391] [2021-06-05 16:43:27,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:27,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:43:27,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:27,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:27,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:27,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023921391] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:27,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:27,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 16:43:27,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146701132] [2021-06-05 16:43:27,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:27,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:27,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:27,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:27,667 INFO L87 Difference]: Start difference. First operand 2309 states and 7963 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:28,211 INFO L93 Difference]: Finished difference Result 4633 states and 14522 transitions. [2021-06-05 16:43:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 16:43:28,211 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:28,218 INFO L225 Difference]: With dead ends: 4633 [2021-06-05 16:43:28,219 INFO L226 Difference]: Without dead ends: 4633 [2021-06-05 16:43:28,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 304.6ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 16:43:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2021-06-05 16:43:28,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 2379. [2021-06-05 16:43:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2378 states have (on average 3.433978132884777) internal successors, (8166), 2378 states have internal predecessors, (8166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 8166 transitions. [2021-06-05 16:43:28,260 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 8166 transitions. Word has length 28 [2021-06-05 16:43:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:28,260 INFO L482 AbstractCegarLoop]: Abstraction has 2379 states and 8166 transitions. [2021-06-05 16:43:28,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 8166 transitions. [2021-06-05 16:43:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:28,262 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:28,263 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:28,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4070,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:28,463 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1848031388, now seen corresponding path program 63 times [2021-06-05 16:43:28,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:28,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202680455] [2021-06-05 16:43:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:43:28,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:28,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202680455] [2021-06-05 16:43:28,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202680455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:28,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923511019] [2021-06-05 16:43:28,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:28,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:43:28,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:28,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:43:28,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:43:28,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923511019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:28,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:28,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:43:28,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069450767] [2021-06-05 16:43:28,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:43:28,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:28,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:43:28,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:43:28,580 INFO L87 Difference]: Start difference. First operand 2379 states and 8166 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:28,740 INFO L93 Difference]: Finished difference Result 3856 states and 12614 transitions. [2021-06-05 16:43:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:43:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:28,746 INFO L225 Difference]: With dead ends: 3856 [2021-06-05 16:43:28,746 INFO L226 Difference]: Without dead ends: 3832 [2021-06-05 16:43:28,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:43:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2021-06-05 16:43:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2739. [2021-06-05 16:43:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2738 states have (on average 3.50036523009496) internal successors, (9584), 2738 states have internal predecessors, (9584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 9584 transitions. [2021-06-05 16:43:28,784 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 9584 transitions. Word has length 28 [2021-06-05 16:43:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:28,784 INFO L482 AbstractCegarLoop]: Abstraction has 2739 states and 9584 transitions. [2021-06-05 16:43:28,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 9584 transitions. [2021-06-05 16:43:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:28,788 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:28,788 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:29,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4071 [2021-06-05 16:43:29,003 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1411062680, now seen corresponding path program 64 times [2021-06-05 16:43:29,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:29,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464371359] [2021-06-05 16:43:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:29,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:29,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464371359] [2021-06-05 16:43:29,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464371359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:29,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502518827] [2021-06-05 16:43:29,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:29,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:43:29,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:29,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:29,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:29,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502518827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:29,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:29,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 16:43:29,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380203024] [2021-06-05 16:43:29,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:29,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:29,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:29,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:29,151 INFO L87 Difference]: Start difference. First operand 2739 states and 9584 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:29,685 INFO L93 Difference]: Finished difference Result 4478 states and 14368 transitions. [2021-06-05 16:43:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 16:43:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:29,692 INFO L225 Difference]: With dead ends: 4478 [2021-06-05 16:43:29,692 INFO L226 Difference]: Without dead ends: 4431 [2021-06-05 16:43:29,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 326.1ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 16:43:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4431 states. [2021-06-05 16:43:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4431 to 2904. [2021-06-05 16:43:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2903 states have (on average 3.5177402686875645) internal successors, (10212), 2903 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 10212 transitions. [2021-06-05 16:43:29,740 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 10212 transitions. Word has length 28 [2021-06-05 16:43:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:29,740 INFO L482 AbstractCegarLoop]: Abstraction has 2904 states and 10212 transitions. [2021-06-05 16:43:29,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 10212 transitions. [2021-06-05 16:43:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:29,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:29,744 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:29,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4072 [2021-06-05 16:43:29,945 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1347815140, now seen corresponding path program 65 times [2021-06-05 16:43:29,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:29,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004473151] [2021-06-05 16:43:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:29,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:29,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004473151] [2021-06-05 16:43:29,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004473151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:29,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857657247] [2021-06-05 16:43:29,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:29,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:43:29,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:29,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:29,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:30,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857657247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:30,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:30,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 16:43:30,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692645046] [2021-06-05 16:43:30,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:30,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:30,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:30,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:30,079 INFO L87 Difference]: Start difference. First operand 2904 states and 10212 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:30,722 INFO L93 Difference]: Finished difference Result 4785 states and 15055 transitions. [2021-06-05 16:43:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 16:43:30,722 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:30,728 INFO L225 Difference]: With dead ends: 4785 [2021-06-05 16:43:30,728 INFO L226 Difference]: Without dead ends: 4759 [2021-06-05 16:43:30,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 397.5ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 16:43:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2021-06-05 16:43:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 2922. [2021-06-05 16:43:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2921 states have (on average 3.5217391304347827) internal successors, (10287), 2921 states have internal predecessors, (10287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 10287 transitions. [2021-06-05 16:43:30,774 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 10287 transitions. Word has length 28 [2021-06-05 16:43:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:30,774 INFO L482 AbstractCegarLoop]: Abstraction has 2922 states and 10287 transitions. [2021-06-05 16:43:30,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 10287 transitions. [2021-06-05 16:43:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:30,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:30,777 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:30,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4073 [2021-06-05 16:43:30,992 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:30,993 INFO L82 PathProgramCache]: Analyzing trace with hash -675402358, now seen corresponding path program 66 times [2021-06-05 16:43:30,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:30,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759625215] [2021-06-05 16:43:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:31,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:31,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759625215] [2021-06-05 16:43:31,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759625215] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:31,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426922680] [2021-06-05 16:43:31,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:31,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:43:31,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:31,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:31,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:31,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426922680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:31,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:31,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 16:43:31,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130203544] [2021-06-05 16:43:31,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:31,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:31,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:31,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:31,124 INFO L87 Difference]: Start difference. First operand 2922 states and 10287 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:31,735 INFO L93 Difference]: Finished difference Result 4783 states and 15074 transitions. [2021-06-05 16:43:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 16:43:31,736 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:31,742 INFO L225 Difference]: With dead ends: 4783 [2021-06-05 16:43:31,742 INFO L226 Difference]: Without dead ends: 4771 [2021-06-05 16:43:31,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 393.9ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 16:43:31,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-06-05 16:43:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 2922. [2021-06-05 16:43:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2921 states have (on average 3.515576857240671) internal successors, (10269), 2921 states have internal predecessors, (10269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 10269 transitions. [2021-06-05 16:43:31,788 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 10269 transitions. Word has length 28 [2021-06-05 16:43:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:31,788 INFO L482 AbstractCegarLoop]: Abstraction has 2922 states and 10269 transitions. [2021-06-05 16:43:31,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 10269 transitions. [2021-06-05 16:43:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:31,792 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:31,792 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:31,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4074,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:31,992 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:31,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1724201280, now seen corresponding path program 67 times [2021-06-05 16:43:31,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:31,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865084704] [2021-06-05 16:43:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:32,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:32,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865084704] [2021-06-05 16:43:32,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865084704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:32,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110594095] [2021-06-05 16:43:32,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:32,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:32,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:32,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110594095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:32,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:32,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:43:32,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513493427] [2021-06-05 16:43:32,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:43:32,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:32,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:43:32,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:43:32,123 INFO L87 Difference]: Start difference. First operand 2922 states and 10269 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:32,614 INFO L93 Difference]: Finished difference Result 5554 states and 17878 transitions. [2021-06-05 16:43:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 16:43:32,615 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:32,622 INFO L225 Difference]: With dead ends: 5554 [2021-06-05 16:43:32,622 INFO L226 Difference]: Without dead ends: 5507 [2021-06-05 16:43:32,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 280.2ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 16:43:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2021-06-05 16:43:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 3068. [2021-06-05 16:43:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 3.5598304532116076) internal successors, (10918), 3067 states have internal predecessors, (10918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10918 transitions. [2021-06-05 16:43:32,679 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10918 transitions. Word has length 28 [2021-06-05 16:43:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:32,679 INFO L482 AbstractCegarLoop]: Abstraction has 3068 states and 10918 transitions. [2021-06-05 16:43:32,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10918 transitions. [2021-06-05 16:43:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:32,683 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:32,683 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:32,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4075 [2021-06-05 16:43:32,883 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:32,884 INFO L82 PathProgramCache]: Analyzing trace with hash 359577472, now seen corresponding path program 68 times [2021-06-05 16:43:32,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:32,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42557742] [2021-06-05 16:43:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:43:32,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:32,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42557742] [2021-06-05 16:43:32,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42557742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:32,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817275239] [2021-06-05 16:43:32,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:32,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:32,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:32,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:43:32,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:43:32,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817275239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:32,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:32,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 16:43:32,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40902210] [2021-06-05 16:43:32,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 16:43:32,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:32,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 16:43:32,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-05 16:43:32,982 INFO L87 Difference]: Start difference. First operand 3068 states and 10918 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:33,125 INFO L93 Difference]: Finished difference Result 4356 states and 14401 transitions. [2021-06-05 16:43:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:43:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:33,132 INFO L225 Difference]: With dead ends: 4356 [2021-06-05 16:43:33,132 INFO L226 Difference]: Without dead ends: 4356 [2021-06-05 16:43:33,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:43:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2021-06-05 16:43:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 2879. [2021-06-05 16:43:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2878 states have (on average 3.5295343988881167) internal successors, (10158), 2878 states have internal predecessors, (10158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 10158 transitions. [2021-06-05 16:43:33,192 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 10158 transitions. Word has length 28 [2021-06-05 16:43:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:33,192 INFO L482 AbstractCegarLoop]: Abstraction has 2879 states and 10158 transitions. [2021-06-05 16:43:33,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 10158 transitions. [2021-06-05 16:43:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:33,195 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:33,196 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:33,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4076 [2021-06-05 16:43:33,396 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:33,396 INFO L82 PathProgramCache]: Analyzing trace with hash -987104094, now seen corresponding path program 69 times [2021-06-05 16:43:33,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:33,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801139909] [2021-06-05 16:43:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:33,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:33,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801139909] [2021-06-05 16:43:33,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801139909] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:33,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302475305] [2021-06-05 16:43:33,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:33,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 16:43:33,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:33,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:33,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:33,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302475305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:33,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:33,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:43:33,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873355646] [2021-06-05 16:43:33,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:43:33,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:33,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:43:33,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:43:33,520 INFO L87 Difference]: Start difference. First operand 2879 states and 10158 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:34,163 INFO L93 Difference]: Finished difference Result 6267 states and 19847 transitions. [2021-06-05 16:43:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 16:43:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:34,173 INFO L225 Difference]: With dead ends: 6267 [2021-06-05 16:43:34,173 INFO L226 Difference]: Without dead ends: 6267 [2021-06-05 16:43:34,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 344.1ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 16:43:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2021-06-05 16:43:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 2897. [2021-06-05 16:43:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2896 states have (on average 3.5293508287292816) internal successors, (10221), 2896 states have internal predecessors, (10221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 10221 transitions. [2021-06-05 16:43:34,230 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 10221 transitions. Word has length 28 [2021-06-05 16:43:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:34,230 INFO L482 AbstractCegarLoop]: Abstraction has 2897 states and 10221 transitions. [2021-06-05 16:43:34,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 10221 transitions. [2021-06-05 16:43:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:34,234 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:34,234 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:34,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4077 [2021-06-05 16:43:34,434 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:34,434 INFO L82 PathProgramCache]: Analyzing trace with hash -202190000, now seen corresponding path program 70 times [2021-06-05 16:43:34,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:34,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164807188] [2021-06-05 16:43:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:34,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:34,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164807188] [2021-06-05 16:43:34,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164807188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:34,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789854616] [2021-06-05 16:43:34,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:34,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:43:34,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:34,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:34,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:34,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789854616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:34,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:34,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:43:34,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736672051] [2021-06-05 16:43:34,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:43:34,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:34,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:43:34,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:43:34,558 INFO L87 Difference]: Start difference. First operand 2897 states and 10221 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:35,272 INFO L93 Difference]: Finished difference Result 6510 states and 20600 transitions. [2021-06-05 16:43:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 16:43:35,272 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:35,282 INFO L225 Difference]: With dead ends: 6510 [2021-06-05 16:43:35,282 INFO L226 Difference]: Without dead ends: 6510 [2021-06-05 16:43:35,282 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 392.5ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 16:43:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2021-06-05 16:43:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 2991. [2021-06-05 16:43:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 3.5210702341137123) internal successors, (10528), 2990 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 10528 transitions. [2021-06-05 16:43:35,348 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 10528 transitions. Word has length 28 [2021-06-05 16:43:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:35,348 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 10528 transitions. [2021-06-05 16:43:35,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 10528 transitions. [2021-06-05 16:43:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:35,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:35,352 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:35,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4078 [2021-06-05 16:43:35,553 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1285212656, now seen corresponding path program 71 times [2021-06-05 16:43:35,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:35,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24732922] [2021-06-05 16:43:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:35,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:35,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24732922] [2021-06-05 16:43:35,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24732922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:35,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746441446] [2021-06-05 16:43:35,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:35,607 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:43:35,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:35,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:35,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:35,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746441446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:35,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:35,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:43:35,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503503938] [2021-06-05 16:43:35,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:43:35,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:35,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:43:35,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:43:35,672 INFO L87 Difference]: Start difference. First operand 2991 states and 10528 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:36,220 INFO L93 Difference]: Finished difference Result 6652 states and 21097 transitions. [2021-06-05 16:43:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 16:43:36,220 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:36,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:36,230 INFO L225 Difference]: With dead ends: 6652 [2021-06-05 16:43:36,230 INFO L226 Difference]: Without dead ends: 6616 [2021-06-05 16:43:36,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 333.9ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 16:43:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6616 states. [2021-06-05 16:43:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6616 to 3393. [2021-06-05 16:43:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3392 states have (on average 3.5474646226415096) internal successors, (12033), 3392 states have internal predecessors, (12033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 12033 transitions. [2021-06-05 16:43:36,301 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 12033 transitions. Word has length 28 [2021-06-05 16:43:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:36,301 INFO L482 AbstractCegarLoop]: Abstraction has 3393 states and 12033 transitions. [2021-06-05 16:43:36,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 12033 transitions. [2021-06-05 16:43:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:36,305 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:36,305 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:36,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-05 16:43:36,506 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:36,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:36,506 INFO L82 PathProgramCache]: Analyzing trace with hash 185865462, now seen corresponding path program 72 times [2021-06-05 16:43:36,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:36,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175350047] [2021-06-05 16:43:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:36,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:36,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175350047] [2021-06-05 16:43:36,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175350047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:36,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677850641] [2021-06-05 16:43:36,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:36,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:43:36,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:36,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:36,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:36,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677850641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:36,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:36,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:43:36,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713457362] [2021-06-05 16:43:36,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:43:36,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:36,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:43:36,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:43:36,643 INFO L87 Difference]: Start difference. First operand 3393 states and 12033 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:37,217 INFO L93 Difference]: Finished difference Result 6827 states and 21583 transitions. [2021-06-05 16:43:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 16:43:37,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:37,227 INFO L225 Difference]: With dead ends: 6827 [2021-06-05 16:43:37,227 INFO L226 Difference]: Without dead ends: 6827 [2021-06-05 16:43:37,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 336.4ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 16:43:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6827 states. [2021-06-05 16:43:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6827 to 3104. [2021-06-05 16:43:37,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3103 states have (on average 3.5078955849178213) internal successors, (10885), 3103 states have internal predecessors, (10885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 10885 transitions. [2021-06-05 16:43:37,292 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 10885 transitions. Word has length 28 [2021-06-05 16:43:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:37,292 INFO L482 AbstractCegarLoop]: Abstraction has 3104 states and 10885 transitions. [2021-06-05 16:43:37,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 10885 transitions. [2021-06-05 16:43:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:37,296 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:37,296 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:37,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4080,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:37,497 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:37,497 INFO L82 PathProgramCache]: Analyzing trace with hash -247011142, now seen corresponding path program 73 times [2021-06-05 16:43:37,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:37,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987084838] [2021-06-05 16:43:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:37,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:37,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987084838] [2021-06-05 16:43:37,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987084838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:37,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90085479] [2021-06-05 16:43:37,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:37,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:37,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:37,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90085479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:37,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:37,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:43:37,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462635546] [2021-06-05 16:43:37,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:43:37,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:37,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:43:37,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:43:37,612 INFO L87 Difference]: Start difference. First operand 3104 states and 10885 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:38,245 INFO L93 Difference]: Finished difference Result 5999 states and 19332 transitions. [2021-06-05 16:43:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 16:43:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:38,254 INFO L225 Difference]: With dead ends: 5999 [2021-06-05 16:43:38,254 INFO L226 Difference]: Without dead ends: 5995 [2021-06-05 16:43:38,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 352.8ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 16:43:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2021-06-05 16:43:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 2864. [2021-06-05 16:43:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2863 states have (on average 3.5337059028990567) internal successors, (10117), 2863 states have internal predecessors, (10117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 10117 transitions. [2021-06-05 16:43:38,332 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 10117 transitions. Word has length 28 [2021-06-05 16:43:38,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:38,332 INFO L482 AbstractCegarLoop]: Abstraction has 2864 states and 10117 transitions. [2021-06-05 16:43:38,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 10117 transitions. [2021-06-05 16:43:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:38,336 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:38,336 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:38,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4081 [2021-06-05 16:43:38,536 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:38,537 INFO L82 PathProgramCache]: Analyzing trace with hash -519020332, now seen corresponding path program 74 times [2021-06-05 16:43:38,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:38,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934409861] [2021-06-05 16:43:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:38,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:38,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934409861] [2021-06-05 16:43:38,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934409861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:38,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584558807] [2021-06-05 16:43:38,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:38,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:38,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:38,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:38,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:38,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584558807] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:38,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:38,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 16:43:38,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281452535] [2021-06-05 16:43:38,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:38,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:38,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:38,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:38,690 INFO L87 Difference]: Start difference. First operand 2864 states and 10117 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:39,677 INFO L93 Difference]: Finished difference Result 9242 states and 30126 transitions. [2021-06-05 16:43:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 16:43:39,678 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:39,694 INFO L225 Difference]: With dead ends: 9242 [2021-06-05 16:43:39,694 INFO L226 Difference]: Without dead ends: 9242 [2021-06-05 16:43:39,695 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 556.1ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 16:43:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9242 states. [2021-06-05 16:43:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9242 to 3043. [2021-06-05 16:43:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 3.6058514135437214) internal successors, (10969), 3042 states have internal predecessors, (10969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 10969 transitions. [2021-06-05 16:43:39,787 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 10969 transitions. Word has length 28 [2021-06-05 16:43:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:39,787 INFO L482 AbstractCegarLoop]: Abstraction has 3043 states and 10969 transitions. [2021-06-05 16:43:39,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 10969 transitions. [2021-06-05 16:43:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:39,792 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:39,792 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:39,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4082,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:39,992 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:39,993 INFO L82 PathProgramCache]: Analyzing trace with hash 47931748, now seen corresponding path program 75 times [2021-06-05 16:43:39,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:39,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431387629] [2021-06-05 16:43:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:40,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:40,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431387629] [2021-06-05 16:43:40,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431387629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:40,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123558001] [2021-06-05 16:43:40,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:40,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:43:40,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:40,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:40,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:40,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123558001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:40,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:40,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 16:43:40,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24710397] [2021-06-05 16:43:40,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:40,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:40,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:40,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:40,154 INFO L87 Difference]: Start difference. First operand 3043 states and 10969 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:41,086 INFO L93 Difference]: Finished difference Result 9069 states and 29656 transitions. [2021-06-05 16:43:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 16:43:41,086 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:41,100 INFO L225 Difference]: With dead ends: 9069 [2021-06-05 16:43:41,100 INFO L226 Difference]: Without dead ends: 9069 [2021-06-05 16:43:41,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 549.3ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 16:43:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9069 states. [2021-06-05 16:43:41,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9069 to 3012. [2021-06-05 16:43:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3011 states have (on average 3.5888409166389903) internal successors, (10806), 3011 states have internal predecessors, (10806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 10806 transitions. [2021-06-05 16:43:41,183 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 10806 transitions. Word has length 28 [2021-06-05 16:43:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:41,183 INFO L482 AbstractCegarLoop]: Abstraction has 3012 states and 10806 transitions. [2021-06-05 16:43:41,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 10806 transitions. [2021-06-05 16:43:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:41,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:41,187 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:41,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4083 [2021-06-05 16:43:41,387 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1124414110, now seen corresponding path program 76 times [2021-06-05 16:43:41,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:41,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670332452] [2021-06-05 16:43:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:41,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:41,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670332452] [2021-06-05 16:43:41,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670332452] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:41,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86542298] [2021-06-05 16:43:41,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:41,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:43:41,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:41,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:41,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:41,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86542298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:41,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:41,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 16:43:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997922386] [2021-06-05 16:43:41,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:41,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:41,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:41,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:41,519 INFO L87 Difference]: Start difference. First operand 3012 states and 10806 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:42,371 INFO L93 Difference]: Finished difference Result 8513 states and 26929 transitions. [2021-06-05 16:43:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 16:43:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:42,384 INFO L225 Difference]: With dead ends: 8513 [2021-06-05 16:43:42,385 INFO L226 Difference]: Without dead ends: 8513 [2021-06-05 16:43:42,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 454.9ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 16:43:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8513 states. [2021-06-05 16:43:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8513 to 3032. [2021-06-05 16:43:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 3031 states have (on average 3.5922137908281093) internal successors, (10888), 3031 states have internal predecessors, (10888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 10888 transitions. [2021-06-05 16:43:42,461 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 10888 transitions. Word has length 28 [2021-06-05 16:43:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:42,461 INFO L482 AbstractCegarLoop]: Abstraction has 3032 states and 10888 transitions. [2021-06-05 16:43:42,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10888 transitions. [2021-06-05 16:43:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:42,464 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:42,465 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:42,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4084,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:42,665 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1043038022, now seen corresponding path program 77 times [2021-06-05 16:43:42,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:42,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004242355] [2021-06-05 16:43:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:42,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:42,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004242355] [2021-06-05 16:43:42,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004242355] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:42,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560605280] [2021-06-05 16:43:42,696 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:42,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 16:43:42,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:42,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:42,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:42,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560605280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:42,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:42,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 16:43:42,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577341817] [2021-06-05 16:43:42,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:42,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:42,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:42,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:42,788 INFO L87 Difference]: Start difference. First operand 3032 states and 10888 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:43,621 INFO L93 Difference]: Finished difference Result 8020 states and 25736 transitions. [2021-06-05 16:43:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 16:43:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:43,633 INFO L225 Difference]: With dead ends: 8020 [2021-06-05 16:43:43,633 INFO L226 Difference]: Without dead ends: 8012 [2021-06-05 16:43:43,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 435.9ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:43:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2021-06-05 16:43:43,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 3014. [2021-06-05 16:43:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3013 states have (on average 3.5881181546631264) internal successors, (10811), 3013 states have internal predecessors, (10811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 10811 transitions. [2021-06-05 16:43:43,706 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 10811 transitions. Word has length 28 [2021-06-05 16:43:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:43,706 INFO L482 AbstractCegarLoop]: Abstraction has 3014 states and 10811 transitions. [2021-06-05 16:43:43,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 10811 transitions. [2021-06-05 16:43:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:43,710 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:43,710 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:43,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4085 [2021-06-05 16:43:43,910 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash -112380806, now seen corresponding path program 78 times [2021-06-05 16:43:43,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:43,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524893973] [2021-06-05 16:43:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:43,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:43,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524893973] [2021-06-05 16:43:43,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524893973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:43,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966005446] [2021-06-05 16:43:43,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:43,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 16:43:43,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:43,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:43,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:44,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966005446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:44,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:44,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 16:43:44,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537914562] [2021-06-05 16:43:44,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:44,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:44,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:44,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:44,049 INFO L87 Difference]: Start difference. First operand 3014 states and 10811 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:44,898 INFO L93 Difference]: Finished difference Result 7945 states and 25505 transitions. [2021-06-05 16:43:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 16:43:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:44,909 INFO L225 Difference]: With dead ends: 7945 [2021-06-05 16:43:44,909 INFO L226 Difference]: Without dead ends: 7945 [2021-06-05 16:43:44,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 479.2ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 16:43:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2021-06-05 16:43:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 3030. [2021-06-05 16:43:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 3.5902938263453286) internal successors, (10875), 3029 states have internal predecessors, (10875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 10875 transitions. [2021-06-05 16:43:44,977 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 10875 transitions. Word has length 28 [2021-06-05 16:43:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:44,977 INFO L482 AbstractCegarLoop]: Abstraction has 3030 states and 10875 transitions. [2021-06-05 16:43:44,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 10875 transitions. [2021-06-05 16:43:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:44,981 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:44,981 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:45,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4086 [2021-06-05 16:43:45,182 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:45,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1530658348, now seen corresponding path program 79 times [2021-06-05 16:43:45,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:45,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242682210] [2021-06-05 16:43:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:45,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:45,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242682210] [2021-06-05 16:43:45,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242682210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:45,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228289893] [2021-06-05 16:43:45,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:45,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:45,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:45,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228289893] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:45,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:45,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 16:43:45,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054081909] [2021-06-05 16:43:45,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:45,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:45,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:45,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:45,321 INFO L87 Difference]: Start difference. First operand 3030 states and 10875 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:46,167 INFO L93 Difference]: Finished difference Result 7613 states and 24721 transitions. [2021-06-05 16:43:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 16:43:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:46,179 INFO L225 Difference]: With dead ends: 7613 [2021-06-05 16:43:46,179 INFO L226 Difference]: Without dead ends: 7605 [2021-06-05 16:43:46,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 461.1ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:43:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2021-06-05 16:43:46,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 2787. [2021-06-05 16:43:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 3.5078966259870783) internal successors, (9773), 2786 states have internal predecessors, (9773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 9773 transitions. [2021-06-05 16:43:46,257 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 9773 transitions. Word has length 28 [2021-06-05 16:43:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:46,257 INFO L482 AbstractCegarLoop]: Abstraction has 2787 states and 9773 transitions. [2021-06-05 16:43:46,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 9773 transitions. [2021-06-05 16:43:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:46,260 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:46,261 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:46,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4087 [2021-06-05 16:43:46,463 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:46,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1614061928, now seen corresponding path program 80 times [2021-06-05 16:43:46,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:46,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383808334] [2021-06-05 16:43:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:46,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:46,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383808334] [2021-06-05 16:43:46,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383808334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:46,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041954793] [2021-06-05 16:43:46,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:46,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:46,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:46,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:46,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:46,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041954793] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:46,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:46,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 16:43:46,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949751411] [2021-06-05 16:43:46,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:43:46,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:46,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:43:46,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:43:46,601 INFO L87 Difference]: Start difference. First operand 2787 states and 9773 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:47,358 INFO L93 Difference]: Finished difference Result 5810 states and 18592 transitions. [2021-06-05 16:43:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 16:43:47,358 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:47,366 INFO L225 Difference]: With dead ends: 5810 [2021-06-05 16:43:47,366 INFO L226 Difference]: Without dead ends: 5810 [2021-06-05 16:43:47,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 468.6ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 16:43:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2021-06-05 16:43:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 2799. [2021-06-05 16:43:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2798 states have (on average 3.506433166547534) internal successors, (9811), 2798 states have internal predecessors, (9811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 9811 transitions. [2021-06-05 16:43:47,418 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 9811 transitions. Word has length 28 [2021-06-05 16:43:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:47,418 INFO L482 AbstractCegarLoop]: Abstraction has 2799 states and 9811 transitions. [2021-06-05 16:43:47,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 9811 transitions. [2021-06-05 16:43:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:47,421 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:47,421 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:47,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4088 [2021-06-05 16:43:47,625 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1027545192, now seen corresponding path program 81 times [2021-06-05 16:43:47,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:47,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140559747] [2021-06-05 16:43:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:47,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:47,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140559747] [2021-06-05 16:43:47,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140559747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:47,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476960251] [2021-06-05 16:43:47,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:47,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 16:43:47,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:47,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:47,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:47,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476960251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:47,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:47,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:43:47,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265904164] [2021-06-05 16:43:47,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:43:47,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:47,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:43:47,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:43:47,789 INFO L87 Difference]: Start difference. First operand 2799 states and 9811 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:48,774 INFO L93 Difference]: Finished difference Result 6586 states and 20579 transitions. [2021-06-05 16:43:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 16:43:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:48,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:48,783 INFO L225 Difference]: With dead ends: 6586 [2021-06-05 16:43:48,783 INFO L226 Difference]: Without dead ends: 6586 [2021-06-05 16:43:48,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 641.1ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 16:43:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2021-06-05 16:43:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 2865. [2021-06-05 16:43:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2864 states have (on average 3.5013966480446927) internal successors, (10028), 2864 states have internal predecessors, (10028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 10028 transitions. [2021-06-05 16:43:48,847 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 10028 transitions. Word has length 28 [2021-06-05 16:43:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:48,847 INFO L482 AbstractCegarLoop]: Abstraction has 2865 states and 10028 transitions. [2021-06-05 16:43:48,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 10028 transitions. [2021-06-05 16:43:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:48,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:48,850 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:49,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4089 [2021-06-05 16:43:49,051 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:49,051 INFO L82 PathProgramCache]: Analyzing trace with hash 615493962, now seen corresponding path program 82 times [2021-06-05 16:43:49,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:49,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764863015] [2021-06-05 16:43:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:49,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:49,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764863015] [2021-06-05 16:43:49,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764863015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:49,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920226955] [2021-06-05 16:43:49,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:49,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:43:49,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:49,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:49,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:49,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920226955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:49,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:49,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:43:49,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48956034] [2021-06-05 16:43:49,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:43:49,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:49,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:43:49,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:43:49,194 INFO L87 Difference]: Start difference. First operand 2865 states and 10028 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:50,106 INFO L93 Difference]: Finished difference Result 6152 states and 19441 transitions. [2021-06-05 16:43:50,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 16:43:50,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:50,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:50,115 INFO L225 Difference]: With dead ends: 6152 [2021-06-05 16:43:50,115 INFO L226 Difference]: Without dead ends: 6148 [2021-06-05 16:43:50,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 556.8ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 16:43:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2021-06-05 16:43:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 2791. [2021-06-05 16:43:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 3.4974910394265235) internal successors, (9758), 2790 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 9758 transitions. [2021-06-05 16:43:50,174 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 9758 transitions. Word has length 28 [2021-06-05 16:43:50,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:50,174 INFO L482 AbstractCegarLoop]: Abstraction has 2791 states and 9758 transitions. [2021-06-05 16:43:50,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:50,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 9758 transitions. [2021-06-05 16:43:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:50,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:50,178 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:50,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4090,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:50,378 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:50,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1194937186, now seen corresponding path program 65 times [2021-06-05 16:43:50,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:50,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616577460] [2021-06-05 16:43:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:50,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:50,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616577460] [2021-06-05 16:43:50,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616577460] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:50,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219202532] [2021-06-05 16:43:50,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:50,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:43:50,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:50,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:50,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:50,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219202532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:50,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:50,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:43:50,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225247459] [2021-06-05 16:43:50,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:50,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:50,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:50,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:50,513 INFO L87 Difference]: Start difference. First operand 2791 states and 9758 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:51,063 INFO L93 Difference]: Finished difference Result 5291 states and 17008 transitions. [2021-06-05 16:43:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 16:43:51,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:51,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:51,070 INFO L225 Difference]: With dead ends: 5291 [2021-06-05 16:43:51,070 INFO L226 Difference]: Without dead ends: 5291 [2021-06-05 16:43:51,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 314.0ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 16:43:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2021-06-05 16:43:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 2791. [2021-06-05 16:43:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 3.499641577060932) internal successors, (9764), 2790 states have internal predecessors, (9764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 9764 transitions. [2021-06-05 16:43:51,115 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 9764 transitions. Word has length 28 [2021-06-05 16:43:51,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:51,116 INFO L482 AbstractCegarLoop]: Abstraction has 2791 states and 9764 transitions. [2021-06-05 16:43:51,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 9764 transitions. [2021-06-05 16:43:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:51,119 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:51,119 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:51,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4091,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:51,319 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash -416862576, now seen corresponding path program 66 times [2021-06-05 16:43:51,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:51,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309956622] [2021-06-05 16:43:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:51,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:51,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309956622] [2021-06-05 16:43:51,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309956622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:51,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198398432] [2021-06-05 16:43:51,356 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:51,379 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:43:51,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:51,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:51,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:51,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198398432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:51,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:51,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:43:51,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404244892] [2021-06-05 16:43:51,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:51,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:51,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:51,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:51,447 INFO L87 Difference]: Start difference. First operand 2791 states and 9764 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:52,096 INFO L93 Difference]: Finished difference Result 5642 states and 18000 transitions. [2021-06-05 16:43:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 16:43:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:52,105 INFO L225 Difference]: With dead ends: 5642 [2021-06-05 16:43:52,105 INFO L226 Difference]: Without dead ends: 5642 [2021-06-05 16:43:52,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 389.7ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 16:43:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-06-05 16:43:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 2782. [2021-06-05 16:43:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2781 states have (on average 3.4998202085580727) internal successors, (9733), 2781 states have internal predecessors, (9733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 9733 transitions. [2021-06-05 16:43:52,158 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 9733 transitions. Word has length 28 [2021-06-05 16:43:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:52,158 INFO L482 AbstractCegarLoop]: Abstraction has 2782 states and 9733 transitions. [2021-06-05 16:43:52,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 9733 transitions. [2021-06-05 16:43:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:52,162 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:52,162 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:52,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4092,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:52,362 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:52,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:52,362 INFO L82 PathProgramCache]: Analyzing trace with hash -648402224, now seen corresponding path program 67 times [2021-06-05 16:43:52,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:52,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811610618] [2021-06-05 16:43:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:52,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:52,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811610618] [2021-06-05 16:43:52,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811610618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:52,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949781059] [2021-06-05 16:43:52,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:52,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:52,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949781059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:52,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:52,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:43:52,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705493004] [2021-06-05 16:43:52,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:52,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:52,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:52,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:52,501 INFO L87 Difference]: Start difference. First operand 2782 states and 9733 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:53,333 INFO L93 Difference]: Finished difference Result 6106 states and 19261 transitions. [2021-06-05 16:43:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 16:43:53,333 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:53,341 INFO L225 Difference]: With dead ends: 6106 [2021-06-05 16:43:53,341 INFO L226 Difference]: Without dead ends: 6106 [2021-06-05 16:43:53,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 491.5ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 16:43:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2021-06-05 16:43:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 2844. [2021-06-05 16:43:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2843 states have (on average 3.4956032360182907) internal successors, (9938), 2843 states have internal predecessors, (9938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 9938 transitions. [2021-06-05 16:43:53,393 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 9938 transitions. Word has length 28 [2021-06-05 16:43:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:53,393 INFO L482 AbstractCegarLoop]: Abstraction has 2844 states and 9938 transitions. [2021-06-05 16:43:53,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 9938 transitions. [2021-06-05 16:43:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:53,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:53,396 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:53,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4093 [2021-06-05 16:43:53,597 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:53,597 INFO L82 PathProgramCache]: Analyzing trace with hash -628686410, now seen corresponding path program 68 times [2021-06-05 16:43:53,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:53,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143776482] [2021-06-05 16:43:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:53,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:53,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143776482] [2021-06-05 16:43:53,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143776482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:53,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977492883] [2021-06-05 16:43:53,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:53,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:53,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:53,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:53,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:53,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977492883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:53,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:53,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 16:43:53,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966684669] [2021-06-05 16:43:53,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:43:53,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:53,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:43:53,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:43:53,732 INFO L87 Difference]: Start difference. First operand 2844 states and 9938 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:54,214 INFO L93 Difference]: Finished difference Result 6899 states and 23235 transitions. [2021-06-05 16:43:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 16:43:54,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:54,224 INFO L225 Difference]: With dead ends: 6899 [2021-06-05 16:43:54,224 INFO L226 Difference]: Without dead ends: 6899 [2021-06-05 16:43:54,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 328.4ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 16:43:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2021-06-05 16:43:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 4080. [2021-06-05 16:43:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 3.613875949987742) internal successors, (14741), 4079 states have internal predecessors, (14741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 14741 transitions. [2021-06-05 16:43:54,296 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 14741 transitions. Word has length 28 [2021-06-05 16:43:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:54,297 INFO L482 AbstractCegarLoop]: Abstraction has 4080 states and 14741 transitions. [2021-06-05 16:43:54,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 14741 transitions. [2021-06-05 16:43:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:54,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:54,302 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:54,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4094,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:54,502 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:54,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:54,502 INFO L82 PathProgramCache]: Analyzing trace with hash -693223366, now seen corresponding path program 69 times [2021-06-05 16:43:54,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:54,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81946034] [2021-06-05 16:43:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:54,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:54,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81946034] [2021-06-05 16:43:54,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81946034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:54,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602400741] [2021-06-05 16:43:54,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:54,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 16:43:54,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:54,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:54,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:54,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602400741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:54,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:54,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:43:54,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825349267] [2021-06-05 16:43:54,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:54,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:54,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:54,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:54,623 INFO L87 Difference]: Start difference. First operand 4080 states and 14741 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:55,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:55,358 INFO L93 Difference]: Finished difference Result 7418 states and 25100 transitions. [2021-06-05 16:43:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 16:43:55,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:55,370 INFO L225 Difference]: With dead ends: 7418 [2021-06-05 16:43:55,370 INFO L226 Difference]: Without dead ends: 7414 [2021-06-05 16:43:55,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 412.5ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 16:43:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7414 states. [2021-06-05 16:43:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7414 to 3968. [2021-06-05 16:43:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 3.623140912528359) internal successors, (14373), 3967 states have internal predecessors, (14373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 14373 transitions. [2021-06-05 16:43:55,448 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 14373 transitions. Word has length 28 [2021-06-05 16:43:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:55,448 INFO L482 AbstractCegarLoop]: Abstraction has 3968 states and 14373 transitions. [2021-06-05 16:43:55,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 14373 transitions. [2021-06-05 16:43:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:55,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:55,453 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:55,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4095 [2021-06-05 16:43:55,654 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:55,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1327034102, now seen corresponding path program 83 times [2021-06-05 16:43:55,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:55,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518082183] [2021-06-05 16:43:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:55,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:55,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518082183] [2021-06-05 16:43:55,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518082183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:55,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393527078] [2021-06-05 16:43:55,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:55,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:43:55,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:55,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:55,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393527078] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:55,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:55,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 16:43:55,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628483086] [2021-06-05 16:43:55,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:55,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:55,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:55,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:55,797 INFO L87 Difference]: Start difference. First operand 3968 states and 14373 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:56,554 INFO L93 Difference]: Finished difference Result 8219 states and 27545 transitions. [2021-06-05 16:43:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 16:43:56,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:56,566 INFO L225 Difference]: With dead ends: 8219 [2021-06-05 16:43:56,567 INFO L226 Difference]: Without dead ends: 8207 [2021-06-05 16:43:56,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 445.1ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:43:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2021-06-05 16:43:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 4409. [2021-06-05 16:43:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.713475499092559) internal successors, (16369), 4408 states have internal predecessors, (16369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 16369 transitions. [2021-06-05 16:43:56,654 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 16369 transitions. Word has length 28 [2021-06-05 16:43:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:56,654 INFO L482 AbstractCegarLoop]: Abstraction has 4409 states and 16369 transitions. [2021-06-05 16:43:56,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 16369 transitions. [2021-06-05 16:43:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:56,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:56,660 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:56,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4096,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:56,860 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:56,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash -926591794, now seen corresponding path program 84 times [2021-06-05 16:43:56,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:56,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672330890] [2021-06-05 16:43:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:56,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:56,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672330890] [2021-06-05 16:43:56,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672330890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:56,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958905249] [2021-06-05 16:43:56,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:56,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:43:56,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:56,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:56,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:56,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958905249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:56,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:56,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 16:43:56,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176934835] [2021-06-05 16:43:56,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:43:56,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:56,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:43:56,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:43:56,984 INFO L87 Difference]: Start difference. First operand 4409 states and 16369 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:57,761 INFO L93 Difference]: Finished difference Result 8511 states and 28462 transitions. [2021-06-05 16:43:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 16:43:57,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:57,774 INFO L225 Difference]: With dead ends: 8511 [2021-06-05 16:43:57,774 INFO L226 Difference]: Without dead ends: 8511 [2021-06-05 16:43:57,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 434.8ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:43:57,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8511 states. [2021-06-05 16:43:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8511 to 4429. [2021-06-05 16:43:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 4428 states have (on average 3.7007678410117433) internal successors, (16387), 4428 states have internal predecessors, (16387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 16387 transitions. [2021-06-05 16:43:57,863 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 16387 transitions. Word has length 28 [2021-06-05 16:43:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:57,863 INFO L482 AbstractCegarLoop]: Abstraction has 4429 states and 16387 transitions. [2021-06-05 16:43:57,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 16387 transitions. [2021-06-05 16:43:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:57,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:57,868 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:58,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4097,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:58,069 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:58,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:58,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2129998084, now seen corresponding path program 85 times [2021-06-05 16:43:58,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:58,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817288922] [2021-06-05 16:43:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:58,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:58,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817288922] [2021-06-05 16:43:58,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817288922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:58,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4042447] [2021-06-05 16:43:58,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:58,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:43:58,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:58,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4042447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:58,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:58,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:43:58,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595793160] [2021-06-05 16:43:58,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:43:58,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:43:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:43:58,175 INFO L87 Difference]: Start difference. First operand 4429 states and 16387 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:58,592 INFO L93 Difference]: Finished difference Result 7882 states and 27809 transitions. [2021-06-05 16:43:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 16:43:58,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:58,603 INFO L225 Difference]: With dead ends: 7882 [2021-06-05 16:43:58,604 INFO L226 Difference]: Without dead ends: 7799 [2021-06-05 16:43:58,604 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 209.0ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:43:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2021-06-05 16:43:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 5872. [2021-06-05 16:43:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5871 states have (on average 3.7629024016351558) internal successors, (22092), 5871 states have internal predecessors, (22092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 22092 transitions. [2021-06-05 16:43:58,699 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 22092 transitions. Word has length 28 [2021-06-05 16:43:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:58,699 INFO L482 AbstractCegarLoop]: Abstraction has 5872 states and 22092 transitions. [2021-06-05 16:43:58,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 22092 transitions. [2021-06-05 16:43:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:58,707 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:58,707 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:58,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4098 [2021-06-05 16:43:58,908 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:58,908 INFO L82 PathProgramCache]: Analyzing trace with hash -921983104, now seen corresponding path program 86 times [2021-06-05 16:43:58,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:58,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312686559] [2021-06-05 16:43:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:43:58,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:58,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312686559] [2021-06-05 16:43:58,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312686559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:58,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572873701] [2021-06-05 16:43:58,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:58,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:43:58,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:58,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:43:58,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:43:59,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572873701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:59,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:59,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 16:43:59,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507109667] [2021-06-05 16:43:59,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 16:43:59,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:59,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 16:43:59,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 16:43:59,012 INFO L87 Difference]: Start difference. First operand 5872 states and 22092 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:59,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:43:59,174 INFO L93 Difference]: Finished difference Result 8160 states and 28714 transitions. [2021-06-05 16:43:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 16:43:59,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:43:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:43:59,188 INFO L225 Difference]: With dead ends: 8160 [2021-06-05 16:43:59,188 INFO L226 Difference]: Without dead ends: 8160 [2021-06-05 16:43:59,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:43:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8160 states. [2021-06-05 16:43:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8160 to 6012. [2021-06-05 16:43:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 3.7394776243553487) internal successors, (22478), 6011 states have internal predecessors, (22478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 22478 transitions. [2021-06-05 16:43:59,295 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 22478 transitions. Word has length 28 [2021-06-05 16:43:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:43:59,295 INFO L482 AbstractCegarLoop]: Abstraction has 6012 states and 22478 transitions. [2021-06-05 16:43:59,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:43:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 22478 transitions. [2021-06-05 16:43:59,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:43:59,304 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:43:59,305 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:43:59,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4099,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:59,505 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:43:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:43:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash 8216640, now seen corresponding path program 87 times [2021-06-05 16:43:59,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:43:59,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008789004] [2021-06-05 16:43:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:43:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:43:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:59,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:43:59,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008789004] [2021-06-05 16:43:59,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008789004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:59,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205418231] [2021-06-05 16:43:59,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:43:59,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 16:43:59,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:43:59,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:43:59,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:43:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:43:59,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205418231] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:43:59,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:43:59,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 16:43:59,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118025375] [2021-06-05 16:43:59,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:43:59,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:43:59,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:43:59,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:43:59,625 INFO L87 Difference]: Start difference. First operand 6012 states and 22478 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:00,269 INFO L93 Difference]: Finished difference Result 12545 states and 43647 transitions. [2021-06-05 16:44:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 16:44:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:00,290 INFO L225 Difference]: With dead ends: 12545 [2021-06-05 16:44:00,290 INFO L226 Difference]: Without dead ends: 12545 [2021-06-05 16:44:00,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 376.6ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 16:44:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2021-06-05 16:44:00,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 6665. [2021-06-05 16:44:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6664 states have (on average 3.7554021608643455) internal successors, (25026), 6664 states have internal predecessors, (25026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 25026 transitions. [2021-06-05 16:44:00,440 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 25026 transitions. Word has length 28 [2021-06-05 16:44:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:00,440 INFO L482 AbstractCegarLoop]: Abstraction has 6665 states and 25026 transitions. [2021-06-05 16:44:00,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 25026 transitions. [2021-06-05 16:44:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:00,450 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:00,450 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:00,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4100 [2021-06-05 16:44:00,651 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:00,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1910896092, now seen corresponding path program 88 times [2021-06-05 16:44:00,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:00,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970855695] [2021-06-05 16:44:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:00,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:00,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970855695] [2021-06-05 16:44:00,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970855695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:00,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369241637] [2021-06-05 16:44:00,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:00,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:00,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:00,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:00,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:00,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369241637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:00,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:00,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 16:44:00,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665189960] [2021-06-05 16:44:00,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:44:00,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:00,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:44:00,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:44:00,762 INFO L87 Difference]: Start difference. First operand 6665 states and 25026 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:01,365 INFO L93 Difference]: Finished difference Result 12678 states and 44148 transitions. [2021-06-05 16:44:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 16:44:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:01,390 INFO L225 Difference]: With dead ends: 12678 [2021-06-05 16:44:01,390 INFO L226 Difference]: Without dead ends: 12678 [2021-06-05 16:44:01,390 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 327.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 16:44:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states. [2021-06-05 16:44:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 6895. [2021-06-05 16:44:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6894 states have (on average 3.7358572671888597) internal successors, (25755), 6894 states have internal predecessors, (25755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 25755 transitions. [2021-06-05 16:44:01,550 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 25755 transitions. Word has length 28 [2021-06-05 16:44:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:01,550 INFO L482 AbstractCegarLoop]: Abstraction has 6895 states and 25755 transitions. [2021-06-05 16:44:01,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 25755 transitions. [2021-06-05 16:44:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:01,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:01,560 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:01,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4101 [2021-06-05 16:44:01,761 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:01,761 INFO L82 PathProgramCache]: Analyzing trace with hash 827873436, now seen corresponding path program 89 times [2021-06-05 16:44:01,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:01,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061705191] [2021-06-05 16:44:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:01,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:01,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061705191] [2021-06-05 16:44:01,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061705191] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:01,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555646966] [2021-06-05 16:44:01,786 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:01,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:44:01,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:01,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:01,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:01,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555646966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:01,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:01,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:44:01,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365067195] [2021-06-05 16:44:01,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:44:01,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:01,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:44:01,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:44:01,861 INFO L87 Difference]: Start difference. First operand 6895 states and 25755 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:02,192 INFO L93 Difference]: Finished difference Result 9371 states and 33680 transitions. [2021-06-05 16:44:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:44:02,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:02,207 INFO L225 Difference]: With dead ends: 9371 [2021-06-05 16:44:02,207 INFO L226 Difference]: Without dead ends: 9341 [2021-06-05 16:44:02,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 160.9ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 16:44:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-06-05 16:44:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 7751. [2021-06-05 16:44:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7751 states, 7750 states have (on average 3.7625806451612904) internal successors, (29160), 7750 states have internal predecessors, (29160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7751 states to 7751 states and 29160 transitions. [2021-06-05 16:44:02,359 INFO L78 Accepts]: Start accepts. Automaton has 7751 states and 29160 transitions. Word has length 28 [2021-06-05 16:44:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:02,359 INFO L482 AbstractCegarLoop]: Abstraction has 7751 states and 29160 transitions. [2021-06-05 16:44:02,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7751 states and 29160 transitions. [2021-06-05 16:44:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:02,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:02,370 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:02,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4102,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:02,570 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:02,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1996015742, now seen corresponding path program 90 times [2021-06-05 16:44:02,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:02,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900811516] [2021-06-05 16:44:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:02,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:02,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900811516] [2021-06-05 16:44:02,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900811516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:02,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270256645] [2021-06-05 16:44:02,595 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:02,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:44:02,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:02,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:02,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:02,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270256645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:02,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:02,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:44:02,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989503295] [2021-06-05 16:44:02,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:44:02,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:02,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:44:02,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:44:02,673 INFO L87 Difference]: Start difference. First operand 7751 states and 29160 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:02,975 INFO L93 Difference]: Finished difference Result 9993 states and 35743 transitions. [2021-06-05 16:44:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 16:44:02,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:02,992 INFO L225 Difference]: With dead ends: 9993 [2021-06-05 16:44:02,992 INFO L226 Difference]: Without dead ends: 9993 [2021-06-05 16:44:02,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 16:44:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9993 states. [2021-06-05 16:44:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9993 to 7791. [2021-06-05 16:44:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 7790 states have (on average 3.7585365853658534) internal successors, (29279), 7790 states have internal predecessors, (29279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 29279 transitions. [2021-06-05 16:44:03,129 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 29279 transitions. Word has length 28 [2021-06-05 16:44:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:03,129 INFO L482 AbstractCegarLoop]: Abstraction has 7791 states and 29279 transitions. [2021-06-05 16:44:03,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 29279 transitions. [2021-06-05 16:44:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:03,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:03,140 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:03,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4103,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:03,340 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:03,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1866074950, now seen corresponding path program 91 times [2021-06-05 16:44:03,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:03,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800619888] [2021-06-05 16:44:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:03,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:03,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800619888] [2021-06-05 16:44:03,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800619888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:03,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883956951] [2021-06-05 16:44:03,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:03,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:03,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:03,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883956951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:03,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:03,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 16:44:03,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267878463] [2021-06-05 16:44:03,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:44:03,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:03,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:44:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:44:03,494 INFO L87 Difference]: Start difference. First operand 7791 states and 29279 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:04,071 INFO L93 Difference]: Finished difference Result 13376 states and 47489 transitions. [2021-06-05 16:44:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:44:04,071 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:04,096 INFO L225 Difference]: With dead ends: 13376 [2021-06-05 16:44:04,096 INFO L226 Difference]: Without dead ends: 13372 [2021-06-05 16:44:04,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 349.5ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 16:44:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2021-06-05 16:44:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 7707. [2021-06-05 16:44:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 7706 states have (on average 3.7608357124318714) internal successors, (28981), 7706 states have internal predecessors, (28981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 28981 transitions. [2021-06-05 16:44:04,267 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 28981 transitions. Word has length 28 [2021-06-05 16:44:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:04,267 INFO L482 AbstractCegarLoop]: Abstraction has 7707 states and 28981 transitions. [2021-06-05 16:44:04,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 28981 transitions. [2021-06-05 16:44:04,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:04,278 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:04,278 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:04,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4104,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:04,489 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:04,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:04,489 INFO L82 PathProgramCache]: Analyzing trace with hash 970254134, now seen corresponding path program 92 times [2021-06-05 16:44:04,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:04,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16480992] [2021-06-05 16:44:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:04,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:04,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16480992] [2021-06-05 16:44:04,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16480992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:04,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128797492] [2021-06-05 16:44:04,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:04,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:44:04,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:04,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:04,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:04,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128797492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:04,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:04,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:44:04,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941204769] [2021-06-05 16:44:04,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:44:04,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:04,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:44:04,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:44:04,600 INFO L87 Difference]: Start difference. First operand 7707 states and 28981 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:05,001 INFO L93 Difference]: Finished difference Result 10234 states and 36622 transitions. [2021-06-05 16:44:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 16:44:05,002 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:05,020 INFO L225 Difference]: With dead ends: 10234 [2021-06-05 16:44:05,020 INFO L226 Difference]: Without dead ends: 10234 [2021-06-05 16:44:05,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 227.4ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 16:44:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10234 states. [2021-06-05 16:44:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10234 to 7653. [2021-06-05 16:44:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 7652 states have (on average 3.753659174072138) internal successors, (28723), 7652 states have internal predecessors, (28723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:05,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 28723 transitions. [2021-06-05 16:44:05,154 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 28723 transitions. Word has length 28 [2021-06-05 16:44:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:05,154 INFO L482 AbstractCegarLoop]: Abstraction has 7653 states and 28723 transitions. [2021-06-05 16:44:05,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 28723 transitions. [2021-06-05 16:44:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:05,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:05,165 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:05,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4105,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:05,365 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1831555688, now seen corresponding path program 93 times [2021-06-05 16:44:05,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:05,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441729069] [2021-06-05 16:44:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:05,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:05,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441729069] [2021-06-05 16:44:05,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441729069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:05,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338317700] [2021-06-05 16:44:05,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:05,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 16:44:05,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:05,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:05,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:05,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338317700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:05,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:05,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 16:44:05,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101693350] [2021-06-05 16:44:05,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:05,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:05,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:05,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:05,487 INFO L87 Difference]: Start difference. First operand 7653 states and 28723 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:06,177 INFO L93 Difference]: Finished difference Result 13259 states and 46986 transitions. [2021-06-05 16:44:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 16:44:06,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:06,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:06,202 INFO L225 Difference]: With dead ends: 13259 [2021-06-05 16:44:06,202 INFO L226 Difference]: Without dead ends: 13247 [2021-06-05 16:44:06,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 380.6ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:44:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13247 states. [2021-06-05 16:44:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 7653. [2021-06-05 16:44:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 7652 states have (on average 3.7526136957658127) internal successors, (28715), 7652 states have internal predecessors, (28715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 28715 transitions. [2021-06-05 16:44:06,406 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 28715 transitions. Word has length 28 [2021-06-05 16:44:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:06,406 INFO L482 AbstractCegarLoop]: Abstraction has 7653 states and 28715 transitions. [2021-06-05 16:44:06,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 28715 transitions. [2021-06-05 16:44:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:06,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:06,417 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:06,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4106,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:06,618 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:06,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:06,618 INFO L82 PathProgramCache]: Analyzing trace with hash 695130692, now seen corresponding path program 94 times [2021-06-05 16:44:06,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:06,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147838921] [2021-06-05 16:44:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:06,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:06,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147838921] [2021-06-05 16:44:06,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147838921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:06,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580505505] [2021-06-05 16:44:06,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:06,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:06,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:06,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:06,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:06,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580505505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:06,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:06,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 16:44:06,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248050374] [2021-06-05 16:44:06,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:44:06,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:06,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:44:06,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:44:06,744 INFO L87 Difference]: Start difference. First operand 7653 states and 28715 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:07,895 INFO L93 Difference]: Finished difference Result 20233 states and 70540 transitions. [2021-06-05 16:44:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 16:44:07,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:07,936 INFO L225 Difference]: With dead ends: 20233 [2021-06-05 16:44:07,937 INFO L226 Difference]: Without dead ends: 20233 [2021-06-05 16:44:07,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 702.7ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 16:44:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20233 states. [2021-06-05 16:44:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20233 to 10480. [2021-06-05 16:44:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10479 states have (on average 3.7973089035213285) internal successors, (39792), 10479 states have internal predecessors, (39792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 39792 transitions. [2021-06-05 16:44:08,257 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 39792 transitions. Word has length 28 [2021-06-05 16:44:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:08,257 INFO L482 AbstractCegarLoop]: Abstraction has 10480 states and 39792 transitions. [2021-06-05 16:44:08,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 39792 transitions. [2021-06-05 16:44:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:08,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:08,272 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:08,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4107 [2021-06-05 16:44:08,474 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:08,474 INFO L82 PathProgramCache]: Analyzing trace with hash 776506780, now seen corresponding path program 95 times [2021-06-05 16:44:08,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:08,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134718346] [2021-06-05 16:44:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:08,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:08,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134718346] [2021-06-05 16:44:08,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134718346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:08,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938478998] [2021-06-05 16:44:08,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:08,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 16:44:08,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:08,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:08,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938478998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:08,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:08,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 16:44:08,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110731605] [2021-06-05 16:44:08,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:44:08,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:08,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:44:08,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:44:08,594 INFO L87 Difference]: Start difference. First operand 10480 states and 39792 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:09,573 INFO L93 Difference]: Finished difference Result 19460 states and 68525 transitions. [2021-06-05 16:44:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 16:44:09,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:09,612 INFO L225 Difference]: With dead ends: 19460 [2021-06-05 16:44:09,613 INFO L226 Difference]: Without dead ends: 19448 [2021-06-05 16:44:09,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 578.6ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 16:44:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2021-06-05 16:44:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 10294. [2021-06-05 16:44:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10294 states, 10293 states have (on average 3.8036529680365296) internal successors, (39151), 10293 states have internal predecessors, (39151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10294 states to 10294 states and 39151 transitions. [2021-06-05 16:44:09,922 INFO L78 Accepts]: Start accepts. Automaton has 10294 states and 39151 transitions. Word has length 28 [2021-06-05 16:44:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:09,922 INFO L482 AbstractCegarLoop]: Abstraction has 10294 states and 39151 transitions. [2021-06-05 16:44:09,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 10294 states and 39151 transitions. [2021-06-05 16:44:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:09,937 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:09,937 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:10,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4108,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:10,138 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:10,138 INFO L82 PathProgramCache]: Analyzing trace with hash -738585192, now seen corresponding path program 96 times [2021-06-05 16:44:10,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:10,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718701512] [2021-06-05 16:44:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:10,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:10,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718701512] [2021-06-05 16:44:10,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718701512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:10,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637726461] [2021-06-05 16:44:10,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:10,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 16:44:10,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:10,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:10,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:10,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637726461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:10,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:10,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 16:44:10,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130333759] [2021-06-05 16:44:10,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:44:10,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:10,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:44:10,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:44:10,262 INFO L87 Difference]: Start difference. First operand 10294 states and 39151 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:11,195 INFO L93 Difference]: Finished difference Result 19263 states and 67830 transitions. [2021-06-05 16:44:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 16:44:11,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:11,230 INFO L225 Difference]: With dead ends: 19263 [2021-06-05 16:44:11,230 INFO L226 Difference]: Without dead ends: 19227 [2021-06-05 16:44:11,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 518.6ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 16:44:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19227 states. [2021-06-05 16:44:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19227 to 10338. [2021-06-05 16:44:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10338 states, 10337 states have (on average 3.8017800135435813) internal successors, (39299), 10337 states have internal predecessors, (39299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10338 states to 10338 states and 39299 transitions. [2021-06-05 16:44:11,501 INFO L78 Accepts]: Start accepts. Automaton has 10338 states and 39299 transitions. Word has length 28 [2021-06-05 16:44:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:11,501 INFO L482 AbstractCegarLoop]: Abstraction has 10338 states and 39299 transitions. [2021-06-05 16:44:11,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 10338 states and 39299 transitions. [2021-06-05 16:44:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:11,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:11,517 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:11,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4109,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:11,717 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash 858541524, now seen corresponding path program 97 times [2021-06-05 16:44:11,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:11,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894545453] [2021-06-05 16:44:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:11,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:11,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894545453] [2021-06-05 16:44:11,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894545453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:11,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958411784] [2021-06-05 16:44:11,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:11,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:11,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:11,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958411784] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:11,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:11,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 16:44:11,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712467256] [2021-06-05 16:44:11,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:11,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:11,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:11,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:11,861 INFO L87 Difference]: Start difference. First operand 10338 states and 39299 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:13,120 INFO L93 Difference]: Finished difference Result 19164 states and 67607 transitions. [2021-06-05 16:44:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-05 16:44:13,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:13,155 INFO L225 Difference]: With dead ends: 19164 [2021-06-05 16:44:13,155 INFO L226 Difference]: Without dead ends: 19164 [2021-06-05 16:44:13,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 799.6ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 16:44:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19164 states. [2021-06-05 16:44:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19164 to 10534. [2021-06-05 16:44:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10534 states, 10533 states have (on average 3.79274660590525) internal successors, (39949), 10533 states have internal predecessors, (39949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 39949 transitions. [2021-06-05 16:44:13,428 INFO L78 Accepts]: Start accepts. Automaton has 10534 states and 39949 transitions. Word has length 28 [2021-06-05 16:44:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:13,428 INFO L482 AbstractCegarLoop]: Abstraction has 10534 states and 39949 transitions. [2021-06-05 16:44:13,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10534 states and 39949 transitions. [2021-06-05 16:44:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:13,446 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:13,446 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:13,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4110 [2021-06-05 16:44:13,657 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:13,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1793386618, now seen corresponding path program 98 times [2021-06-05 16:44:13,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:13,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573003272] [2021-06-05 16:44:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:13,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:13,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573003272] [2021-06-05 16:44:13,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573003272] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:13,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524049276] [2021-06-05 16:44:13,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:13,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:44:13,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:13,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:13,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:13,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524049276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:13,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:13,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 16:44:13,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136881850] [2021-06-05 16:44:13,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:13,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:13,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:13,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:13,804 INFO L87 Difference]: Start difference. First operand 10534 states and 39949 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:14,994 INFO L93 Difference]: Finished difference Result 18787 states and 66570 transitions. [2021-06-05 16:44:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 16:44:14,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:15,029 INFO L225 Difference]: With dead ends: 18787 [2021-06-05 16:44:15,029 INFO L226 Difference]: Without dead ends: 18775 [2021-06-05 16:44:15,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 733.1ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 16:44:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2021-06-05 16:44:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 10416. [2021-06-05 16:44:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10416 states, 10415 states have (on average 3.797215554488718) internal successors, (39548), 10415 states have internal predecessors, (39548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10416 states to 10416 states and 39548 transitions. [2021-06-05 16:44:15,279 INFO L78 Accepts]: Start accepts. Automaton has 10416 states and 39548 transitions. Word has length 28 [2021-06-05 16:44:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:15,279 INFO L482 AbstractCegarLoop]: Abstraction has 10416 states and 39548 transitions. [2021-06-05 16:44:15,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 10416 states and 39548 transitions. [2021-06-05 16:44:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:15,294 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:15,294 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:15,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4111 [2021-06-05 16:44:15,495 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:15,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:15,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1234123500, now seen corresponding path program 99 times [2021-06-05 16:44:15,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:15,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137705815] [2021-06-05 16:44:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:15,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:15,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137705815] [2021-06-05 16:44:15,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137705815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:15,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966855594] [2021-06-05 16:44:15,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:15,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 16:44:15,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:15,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:15,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:15,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966855594] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:15,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:15,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 16:44:15,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781608816] [2021-06-05 16:44:15,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:44:15,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:44:15,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:44:15,635 INFO L87 Difference]: Start difference. First operand 10416 states and 39548 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:16,634 INFO L93 Difference]: Finished difference Result 18027 states and 64486 transitions. [2021-06-05 16:44:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 16:44:16,634 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:16,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:16,670 INFO L225 Difference]: With dead ends: 18027 [2021-06-05 16:44:16,670 INFO L226 Difference]: Without dead ends: 17991 [2021-06-05 16:44:16,671 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 550.6ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 16:44:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17991 states. [2021-06-05 16:44:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17991 to 10440. [2021-06-05 16:44:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10440 states, 10439 states have (on average 3.796149056423029) internal successors, (39628), 10439 states have internal predecessors, (39628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 39628 transitions. [2021-06-05 16:44:16,951 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 39628 transitions. Word has length 28 [2021-06-05 16:44:16,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:16,951 INFO L482 AbstractCegarLoop]: Abstraction has 10440 states and 39628 transitions. [2021-06-05 16:44:16,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 39628 transitions. [2021-06-05 16:44:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:16,966 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:16,966 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:17,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4112 [2021-06-05 16:44:17,166 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1584729920, now seen corresponding path program 100 times [2021-06-05 16:44:17,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:17,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251460531] [2021-06-05 16:44:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:17,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:17,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251460531] [2021-06-05 16:44:17,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251460531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:17,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246889332] [2021-06-05 16:44:17,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:17,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:17,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:17,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:17,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:17,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246889332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:17,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:17,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:44:17,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589946844] [2021-06-05 16:44:17,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:17,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:17,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:17,324 INFO L87 Difference]: Start difference. First operand 10440 states and 39628 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:18,530 INFO L93 Difference]: Finished difference Result 26119 states and 92958 transitions. [2021-06-05 16:44:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 16:44:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:18,586 INFO L225 Difference]: With dead ends: 26119 [2021-06-05 16:44:18,586 INFO L226 Difference]: Without dead ends: 26119 [2021-06-05 16:44:18,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 704.7ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 16:44:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26119 states. [2021-06-05 16:44:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26119 to 10727. [2021-06-05 16:44:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10727 states, 10726 states have (on average 3.821928025358941) internal successors, (40994), 10726 states have internal predecessors, (40994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 40994 transitions. [2021-06-05 16:44:18,947 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 40994 transitions. Word has length 28 [2021-06-05 16:44:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:18,947 INFO L482 AbstractCegarLoop]: Abstraction has 10727 states and 40994 transitions. [2021-06-05 16:44:18,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 40994 transitions. [2021-06-05 16:44:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:18,963 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:18,963 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:19,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4113,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:19,164 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:19,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:19,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1017777840, now seen corresponding path program 101 times [2021-06-05 16:44:19,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:19,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229610246] [2021-06-05 16:44:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:19,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:19,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229610246] [2021-06-05 16:44:19,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229610246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:19,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258736407] [2021-06-05 16:44:19,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:19,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:44:19,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:19,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:19,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:19,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258736407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:19,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:19,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:44:19,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78505066] [2021-06-05 16:44:19,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:19,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:19,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:19,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:19,313 INFO L87 Difference]: Start difference. First operand 10727 states and 40994 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:20,440 INFO L93 Difference]: Finished difference Result 25550 states and 91560 transitions. [2021-06-05 16:44:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 16:44:20,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:20,494 INFO L225 Difference]: With dead ends: 25550 [2021-06-05 16:44:20,494 INFO L226 Difference]: Without dead ends: 25550 [2021-06-05 16:44:20,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 682.6ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 16:44:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25550 states. [2021-06-05 16:44:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25550 to 10629. [2021-06-05 16:44:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10629 states, 10628 states have (on average 3.8091832894241624) internal successors, (40484), 10628 states have internal predecessors, (40484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10629 states to 10629 states and 40484 transitions. [2021-06-05 16:44:20,842 INFO L78 Accepts]: Start accepts. Automaton has 10629 states and 40484 transitions. Word has length 28 [2021-06-05 16:44:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:20,842 INFO L482 AbstractCegarLoop]: Abstraction has 10629 states and 40484 transitions. [2021-06-05 16:44:20,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 10629 states and 40484 transitions. [2021-06-05 16:44:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:20,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:20,857 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:21,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4114,171 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:21,058 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:21,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1216329654, now seen corresponding path program 102 times [2021-06-05 16:44:21,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:21,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958511179] [2021-06-05 16:44:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:21,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:21,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958511179] [2021-06-05 16:44:21,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958511179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:21,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778789761] [2021-06-05 16:44:21,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:21,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:44:21,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:21,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:21,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:21,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778789761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:21,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:21,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 16:44:21,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547945454] [2021-06-05 16:44:21,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:44:21,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:44:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:44:21,202 INFO L87 Difference]: Start difference. First operand 10629 states and 40484 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:21,992 INFO L93 Difference]: Finished difference Result 20289 states and 72951 transitions. [2021-06-05 16:44:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 16:44:21,993 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:22,032 INFO L225 Difference]: With dead ends: 20289 [2021-06-05 16:44:22,032 INFO L226 Difference]: Without dead ends: 20289 [2021-06-05 16:44:22,032 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 424.3ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 16:44:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2021-06-05 16:44:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 10638. [2021-06-05 16:44:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10637 states have (on average 3.8081225909560965) internal successors, (40507), 10637 states have internal predecessors, (40507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 40507 transitions. [2021-06-05 16:44:22,360 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 40507 transitions. Word has length 28 [2021-06-05 16:44:22,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:22,360 INFO L482 AbstractCegarLoop]: Abstraction has 10638 states and 40507 transitions. [2021-06-05 16:44:22,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 40507 transitions. [2021-06-05 16:44:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:22,375 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:22,375 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:22,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4115,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:22,576 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:22,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:22,576 INFO L82 PathProgramCache]: Analyzing trace with hash 541607776, now seen corresponding path program 103 times [2021-06-05 16:44:22,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:22,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474998855] [2021-06-05 16:44:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:22,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:22,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474998855] [2021-06-05 16:44:22,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474998855] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:22,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938814476] [2021-06-05 16:44:22,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:22,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:22,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:22,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938814476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:22,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:22,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 16:44:22,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022354137] [2021-06-05 16:44:22,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:44:22,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:22,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:44:22,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:44:22,714 INFO L87 Difference]: Start difference. First operand 10638 states and 40507 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:23,382 INFO L93 Difference]: Finished difference Result 18838 states and 68311 transitions. [2021-06-05 16:44:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 16:44:23,383 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:23,418 INFO L225 Difference]: With dead ends: 18838 [2021-06-05 16:44:23,418 INFO L226 Difference]: Without dead ends: 18838 [2021-06-05 16:44:23,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 382.2ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 16:44:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18838 states. [2021-06-05 16:44:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18838 to 10650. [2021-06-05 16:44:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10650 states, 10649 states have (on average 3.807399755845619) internal successors, (40545), 10649 states have internal predecessors, (40545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 40545 transitions. [2021-06-05 16:44:23,675 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 40545 transitions. Word has length 28 [2021-06-05 16:44:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:23,675 INFO L482 AbstractCegarLoop]: Abstraction has 10650 states and 40545 transitions. [2021-06-05 16:44:23,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 40545 transitions. [2021-06-05 16:44:23,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:23,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:23,691 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:23,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4116,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:23,892 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:23,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2099999344, now seen corresponding path program 104 times [2021-06-05 16:44:23,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:23,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308172477] [2021-06-05 16:44:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:23,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:23,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308172477] [2021-06-05 16:44:23,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308172477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:23,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046131828] [2021-06-05 16:44:23,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:23,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:44:23,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:23,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:23,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:24,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046131828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:24,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:24,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:44:24,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859376469] [2021-06-05 16:44:24,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:24,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:24,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:24,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:24,048 INFO L87 Difference]: Start difference. First operand 10650 states and 40545 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:25,141 INFO L93 Difference]: Finished difference Result 19442 states and 70046 transitions. [2021-06-05 16:44:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 16:44:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:25,181 INFO L225 Difference]: With dead ends: 19442 [2021-06-05 16:44:25,181 INFO L226 Difference]: Without dead ends: 19442 [2021-06-05 16:44:25,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 684.4ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 16:44:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19442 states. [2021-06-05 16:44:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19442 to 10758. [2021-06-05 16:44:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10758 states, 10757 states have (on average 3.8002231105326763) internal successors, (40879), 10757 states have internal predecessors, (40879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 40879 transitions. [2021-06-05 16:44:25,497 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 40879 transitions. Word has length 28 [2021-06-05 16:44:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:25,497 INFO L482 AbstractCegarLoop]: Abstraction has 10758 states and 40879 transitions. [2021-06-05 16:44:25,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 40879 transitions. [2021-06-05 16:44:25,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:25,513 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:25,513 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:25,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4117,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:25,713 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash -456960190, now seen corresponding path program 105 times [2021-06-05 16:44:25,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:25,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479357191] [2021-06-05 16:44:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:25,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:25,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479357191] [2021-06-05 16:44:25,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479357191] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:25,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213664314] [2021-06-05 16:44:25,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:25,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 16:44:25,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:25,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:25,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:25,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213664314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:25,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:25,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:44:25,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910942364] [2021-06-05 16:44:25,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:25,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:25,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:25,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:25,857 INFO L87 Difference]: Start difference. First operand 10758 states and 40879 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:26,750 INFO L93 Difference]: Finished difference Result 19017 states and 68890 transitions. [2021-06-05 16:44:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 16:44:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:26,785 INFO L225 Difference]: With dead ends: 19017 [2021-06-05 16:44:26,785 INFO L226 Difference]: Without dead ends: 19013 [2021-06-05 16:44:26,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 550.8ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 16:44:26,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19013 states. [2021-06-05 16:44:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19013 to 10684. [2021-06-05 16:44:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10684 states, 10683 states have (on average 3.804174857249836) internal successors, (40640), 10683 states have internal predecessors, (40640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10684 states to 10684 states and 40640 transitions. [2021-06-05 16:44:27,137 INFO L78 Accepts]: Start accepts. Automaton has 10684 states and 40640 transitions. Word has length 28 [2021-06-05 16:44:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:27,137 INFO L482 AbstractCegarLoop]: Abstraction has 10684 states and 40640 transitions. [2021-06-05 16:44:27,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 10684 states and 40640 transitions. [2021-06-05 16:44:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:27,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:27,153 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:27,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4118,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:27,353 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:27,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1748478926, now seen corresponding path program 106 times [2021-06-05 16:44:27,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:27,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992671396] [2021-06-05 16:44:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:27,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:27,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992671396] [2021-06-05 16:44:27,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992671396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:27,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529786799] [2021-06-05 16:44:27,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:27,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:27,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:27,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:27,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529786799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:27,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:27,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:44:27,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677658537] [2021-06-05 16:44:27,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:27,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:27,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:27,508 INFO L87 Difference]: Start difference. First operand 10684 states and 40640 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:28,484 INFO L93 Difference]: Finished difference Result 18448 states and 66382 transitions. [2021-06-05 16:44:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 16:44:28,485 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:28,520 INFO L225 Difference]: With dead ends: 18448 [2021-06-05 16:44:28,521 INFO L226 Difference]: Without dead ends: 18448 [2021-06-05 16:44:28,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 614.7ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 16:44:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2021-06-05 16:44:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 10911. [2021-06-05 16:44:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10911 states, 10910 states have (on average 3.807332722273144) internal successors, (41538), 10910 states have internal predecessors, (41538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10911 states to 10911 states and 41538 transitions. [2021-06-05 16:44:28,779 INFO L78 Accepts]: Start accepts. Automaton has 10911 states and 41538 transitions. Word has length 28 [2021-06-05 16:44:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:28,779 INFO L482 AbstractCegarLoop]: Abstraction has 10911 states and 41538 transitions. [2021-06-05 16:44:28,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 10911 states and 41538 transitions. [2021-06-05 16:44:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:28,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:28,795 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:28,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4119 [2021-06-05 16:44:28,996 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:28,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1366168690, now seen corresponding path program 107 times [2021-06-05 16:44:28,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:28,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825827918] [2021-06-05 16:44:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:29,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:29,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825827918] [2021-06-05 16:44:29,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825827918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:29,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197410995] [2021-06-05 16:44:29,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:29,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 16:44:29,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:29,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:29,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:29,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197410995] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:29,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:29,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:44:29,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800372318] [2021-06-05 16:44:29,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:29,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:29,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:29,154 INFO L87 Difference]: Start difference. First operand 10911 states and 41538 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:30,049 INFO L93 Difference]: Finished difference Result 18161 states and 65584 transitions. [2021-06-05 16:44:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 16:44:30,049 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:30,138 INFO L225 Difference]: With dead ends: 18161 [2021-06-05 16:44:30,138 INFO L226 Difference]: Without dead ends: 18149 [2021-06-05 16:44:30,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 542.9ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 16:44:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2021-06-05 16:44:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 11013. [2021-06-05 16:44:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11013 states, 11012 states have (on average 3.801398474391573) internal successors, (41861), 11012 states have internal predecessors, (41861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 41861 transitions. [2021-06-05 16:44:30,367 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 41861 transitions. Word has length 28 [2021-06-05 16:44:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:30,367 INFO L482 AbstractCegarLoop]: Abstraction has 11013 states and 41861 transitions. [2021-06-05 16:44:30,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 41861 transitions. [2021-06-05 16:44:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:30,383 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:30,383 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:30,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4120 [2021-06-05 16:44:30,584 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:30,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1561241668, now seen corresponding path program 70 times [2021-06-05 16:44:30,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:30,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592524490] [2021-06-05 16:44:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:30,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:30,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592524490] [2021-06-05 16:44:30,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592524490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:30,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656702921] [2021-06-05 16:44:30,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:30,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:30,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:30,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:30,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:30,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656702921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:30,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:30,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 16:44:30,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286439926] [2021-06-05 16:44:30,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:30,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:30,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:30,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:30,700 INFO L87 Difference]: Start difference. First operand 11013 states and 41861 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:31,092 INFO L93 Difference]: Finished difference Result 15676 states and 57990 transitions. [2021-06-05 16:44:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 16:44:31,093 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:31,124 INFO L225 Difference]: With dead ends: 15676 [2021-06-05 16:44:31,125 INFO L226 Difference]: Without dead ends: 15676 [2021-06-05 16:44:31,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 222.4ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:44:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15676 states. [2021-06-05 16:44:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15676 to 11085. [2021-06-05 16:44:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11085 states, 11084 states have (on average 3.7969144713099965) internal successors, (42085), 11084 states have internal predecessors, (42085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11085 states to 11085 states and 42085 transitions. [2021-06-05 16:44:31,346 INFO L78 Accepts]: Start accepts. Automaton has 11085 states and 42085 transitions. Word has length 28 [2021-06-05 16:44:31,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:31,346 INFO L482 AbstractCegarLoop]: Abstraction has 11085 states and 42085 transitions. [2021-06-05 16:44:31,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11085 states and 42085 transitions. [2021-06-05 16:44:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:31,363 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:31,363 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:31,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4121 [2021-06-05 16:44:31,564 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:31,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:31,564 INFO L82 PathProgramCache]: Analyzing trace with hash 963219036, now seen corresponding path program 71 times [2021-06-05 16:44:31,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:31,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510761966] [2021-06-05 16:44:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:31,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:31,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510761966] [2021-06-05 16:44:31,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510761966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:31,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520075700] [2021-06-05 16:44:31,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:31,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 16:44:31,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:31,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:31,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:31,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520075700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:31,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:31,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:44:31,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884930013] [2021-06-05 16:44:31,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:44:31,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:31,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:44:31,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:44:31,675 INFO L87 Difference]: Start difference. First operand 11085 states and 42085 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:32,140 INFO L93 Difference]: Finished difference Result 16651 states and 60827 transitions. [2021-06-05 16:44:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 16:44:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:32,173 INFO L225 Difference]: With dead ends: 16651 [2021-06-05 16:44:32,173 INFO L226 Difference]: Without dead ends: 16651 [2021-06-05 16:44:32,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 262.7ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 16:44:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16651 states. [2021-06-05 16:44:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16651 to 11413. [2021-06-05 16:44:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11412 states have (on average 3.7797932001402033) internal successors, (43135), 11412 states have internal predecessors, (43135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 43135 transitions. [2021-06-05 16:44:32,447 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 43135 transitions. Word has length 28 [2021-06-05 16:44:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:32,447 INFO L482 AbstractCegarLoop]: Abstraction has 11413 states and 43135 transitions. [2021-06-05 16:44:32,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 43135 transitions. [2021-06-05 16:44:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:32,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:32,463 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:32,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4122 [2021-06-05 16:44:32,663 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:32,663 INFO L82 PathProgramCache]: Analyzing trace with hash 918397894, now seen corresponding path program 72 times [2021-06-05 16:44:32,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:32,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321736743] [2021-06-05 16:44:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:32,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:32,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321736743] [2021-06-05 16:44:32,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321736743] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:32,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945571837] [2021-06-05 16:44:32,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:32,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 16:44:32,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:32,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:32,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:32,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945571837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:32,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:32,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:44:32,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726465648] [2021-06-05 16:44:32,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:44:32,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:32,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:44:32,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:44:32,772 INFO L87 Difference]: Start difference. First operand 11413 states and 43135 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:33,153 INFO L93 Difference]: Finished difference Result 16138 states and 59485 transitions. [2021-06-05 16:44:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 16:44:33,154 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:33,184 INFO L225 Difference]: With dead ends: 16138 [2021-06-05 16:44:33,184 INFO L226 Difference]: Without dead ends: 16130 [2021-06-05 16:44:33,185 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 201.4ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 16:44:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16130 states. [2021-06-05 16:44:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16130 to 11353. [2021-06-05 16:44:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11353 states, 11352 states have (on average 3.781800563777308) internal successors, (42931), 11352 states have internal predecessors, (42931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11353 states to 11353 states and 42931 transitions. [2021-06-05 16:44:33,413 INFO L78 Accepts]: Start accepts. Automaton has 11353 states and 42931 transitions. Word has length 28 [2021-06-05 16:44:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:33,413 INFO L482 AbstractCegarLoop]: Abstraction has 11353 states and 42931 transitions. [2021-06-05 16:44:33,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 11353 states and 42931 transitions. [2021-06-05 16:44:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:33,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:33,430 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:33,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4123 [2021-06-05 16:44:33,631 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:33,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1515734552, now seen corresponding path program 73 times [2021-06-05 16:44:33,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:33,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97365754] [2021-06-05 16:44:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:33,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:33,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97365754] [2021-06-05 16:44:33,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97365754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:33,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647127804] [2021-06-05 16:44:33,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:33,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:33,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:33,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647127804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:33,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:33,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 16:44:33,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607114322] [2021-06-05 16:44:33,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:33,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:33,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:33,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:33,752 INFO L87 Difference]: Start difference. First operand 11353 states and 42931 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:34,157 INFO L93 Difference]: Finished difference Result 16038 states and 59197 transitions. [2021-06-05 16:44:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 16:44:34,157 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:34,187 INFO L225 Difference]: With dead ends: 16038 [2021-06-05 16:44:34,187 INFO L226 Difference]: Without dead ends: 16026 [2021-06-05 16:44:34,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 220.6ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 16:44:34,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16026 states. [2021-06-05 16:44:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16026 to 11325. [2021-06-05 16:44:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11325 states, 11324 states have (on average 3.7826739667961853) internal successors, (42835), 11324 states have internal predecessors, (42835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 42835 transitions. [2021-06-05 16:44:34,415 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 42835 transitions. Word has length 28 [2021-06-05 16:44:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:34,415 INFO L482 AbstractCegarLoop]: Abstraction has 11325 states and 42835 transitions. [2021-06-05 16:44:34,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 42835 transitions. [2021-06-05 16:44:34,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:34,432 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:34,432 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:34,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4124,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:34,633 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:34,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:34,633 INFO L82 PathProgramCache]: Analyzing trace with hash 860325080, now seen corresponding path program 74 times [2021-06-05 16:44:34,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:34,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671176157] [2021-06-05 16:44:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:34,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:34,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671176157] [2021-06-05 16:44:34,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671176157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:34,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147839802] [2021-06-05 16:44:34,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:34,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:44:34,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:34,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:34,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:34,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147839802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:34,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:34,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 16:44:34,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256416829] [2021-06-05 16:44:34,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:44:34,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:34,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:44:34,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:44:34,836 INFO L87 Difference]: Start difference. First operand 11325 states and 42835 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:35,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:35,803 INFO L93 Difference]: Finished difference Result 21822 states and 77756 transitions. [2021-06-05 16:44:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 16:44:35,803 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:35,849 INFO L225 Difference]: With dead ends: 21822 [2021-06-05 16:44:35,849 INFO L226 Difference]: Without dead ends: 21822 [2021-06-05 16:44:35,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 501.0ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 16:44:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21822 states. [2021-06-05 16:44:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21822 to 11307. [2021-06-05 16:44:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 3.7813550327259864) internal successors, (42752), 11306 states have internal predecessors, (42752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 42752 transitions. [2021-06-05 16:44:36,147 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 42752 transitions. Word has length 28 [2021-06-05 16:44:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:36,147 INFO L482 AbstractCegarLoop]: Abstraction has 11307 states and 42752 transitions. [2021-06-05 16:44:36,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 42752 transitions. [2021-06-05 16:44:36,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:36,164 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:36,164 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:36,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4125,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:36,364 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:36,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1387096988, now seen corresponding path program 108 times [2021-06-05 16:44:36,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:36,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190868519] [2021-06-05 16:44:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:36,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:36,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190868519] [2021-06-05 16:44:36,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190868519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:36,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340061064] [2021-06-05 16:44:36,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:36,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:44:36,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:36,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:36,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:36,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340061064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:36,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:36,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 16:44:36,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634373024] [2021-06-05 16:44:36,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:44:36,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:36,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:44:36,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:44:36,494 INFO L87 Difference]: Start difference. First operand 11307 states and 42752 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:37,198 INFO L93 Difference]: Finished difference Result 17653 states and 63688 transitions. [2021-06-05 16:44:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 16:44:37,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:37,231 INFO L225 Difference]: With dead ends: 17653 [2021-06-05 16:44:37,232 INFO L226 Difference]: Without dead ends: 17640 [2021-06-05 16:44:37,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 375.4ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 16:44:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17640 states. [2021-06-05 16:44:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17640 to 12618. [2021-06-05 16:44:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12617 states have (on average 3.8484584291035904) internal successors, (48556), 12617 states have internal predecessors, (48556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 48556 transitions. [2021-06-05 16:44:37,512 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 48556 transitions. Word has length 28 [2021-06-05 16:44:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:37,512 INFO L482 AbstractCegarLoop]: Abstraction has 12618 states and 48556 transitions. [2021-06-05 16:44:37,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 48556 transitions. [2021-06-05 16:44:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:37,532 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:37,532 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:37,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4126 [2021-06-05 16:44:37,733 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:37,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2059509770, now seen corresponding path program 109 times [2021-06-05 16:44:37,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:37,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753269932] [2021-06-05 16:44:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:37,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:37,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753269932] [2021-06-05 16:44:37,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753269932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:37,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597874800] [2021-06-05 16:44:37,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:37,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:37,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:37,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597874800] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:37,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:37,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 16:44:37,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643348618] [2021-06-05 16:44:37,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:44:37,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:37,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:44:37,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:44:37,861 INFO L87 Difference]: Start difference. First operand 12618 states and 48556 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:38,601 INFO L93 Difference]: Finished difference Result 17754 states and 63945 transitions. [2021-06-05 16:44:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 16:44:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:38,635 INFO L225 Difference]: With dead ends: 17754 [2021-06-05 16:44:38,635 INFO L226 Difference]: Without dead ends: 17748 [2021-06-05 16:44:38,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 382.8ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 16:44:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17748 states. [2021-06-05 16:44:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17748 to 12591. [2021-06-05 16:44:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12591 states, 12590 states have (on average 3.8476568705321683) internal successors, (48442), 12590 states have internal predecessors, (48442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12591 states to 12591 states and 48442 transitions. [2021-06-05 16:44:38,931 INFO L78 Accepts]: Start accepts. Automaton has 12591 states and 48442 transitions. Word has length 28 [2021-06-05 16:44:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:38,931 INFO L482 AbstractCegarLoop]: Abstraction has 12591 states and 48442 transitions. [2021-06-05 16:44:38,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12591 states and 48442 transitions. [2021-06-05 16:44:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:38,952 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:38,952 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:39,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4127,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:39,152 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash 244170948, now seen corresponding path program 110 times [2021-06-05 16:44:39,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:39,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146053407] [2021-06-05 16:44:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:39,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:39,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146053407] [2021-06-05 16:44:39,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146053407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:39,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853543207] [2021-06-05 16:44:39,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:39,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:44:39,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:39,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:39,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:39,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853543207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:39,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:39,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 16:44:39,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711672315] [2021-06-05 16:44:39,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:39,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:39,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:39,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:39,314 INFO L87 Difference]: Start difference. First operand 12591 states and 48442 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:39,898 INFO L93 Difference]: Finished difference Result 19810 states and 71449 transitions. [2021-06-05 16:44:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 16:44:39,899 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:39,940 INFO L225 Difference]: With dead ends: 19810 [2021-06-05 16:44:39,940 INFO L226 Difference]: Without dead ends: 19797 [2021-06-05 16:44:39,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 297.9ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 16:44:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19797 states. [2021-06-05 16:44:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19797 to 12651. [2021-06-05 16:44:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12651 states, 12650 states have (on average 3.8523320158102767) internal successors, (48732), 12650 states have internal predecessors, (48732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12651 states to 12651 states and 48732 transitions. [2021-06-05 16:44:40,272 INFO L78 Accepts]: Start accepts. Automaton has 12651 states and 48732 transitions. Word has length 28 [2021-06-05 16:44:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:40,272 INFO L482 AbstractCegarLoop]: Abstraction has 12651 states and 48732 transitions. [2021-06-05 16:44:40,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 12651 states and 48732 transitions. [2021-06-05 16:44:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:40,294 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:40,294 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:40,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4128 [2021-06-05 16:44:40,494 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash -438573382, now seen corresponding path program 111 times [2021-06-05 16:44:40,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:40,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569429304] [2021-06-05 16:44:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:40,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:40,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569429304] [2021-06-05 16:44:40,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569429304] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:40,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873966079] [2021-06-05 16:44:40,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:40,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:44:40,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:40,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:40,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:40,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873966079] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:40,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:40,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 16:44:40,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213813966] [2021-06-05 16:44:40,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:40,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:40,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:40,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:40,613 INFO L87 Difference]: Start difference. First operand 12651 states and 48732 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:41,231 INFO L93 Difference]: Finished difference Result 20959 states and 75039 transitions. [2021-06-05 16:44:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 16:44:41,231 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:41,333 INFO L225 Difference]: With dead ends: 20959 [2021-06-05 16:44:41,334 INFO L226 Difference]: Without dead ends: 20959 [2021-06-05 16:44:41,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 348.2ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 16:44:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20959 states. [2021-06-05 16:44:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20959 to 12667. [2021-06-05 16:44:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12667 states, 12666 states have (on average 3.849281541133744) internal successors, (48755), 12666 states have internal predecessors, (48755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12667 states to 12667 states and 48755 transitions. [2021-06-05 16:44:41,640 INFO L78 Accepts]: Start accepts. Automaton has 12667 states and 48755 transitions. Word has length 28 [2021-06-05 16:44:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:41,640 INFO L482 AbstractCegarLoop]: Abstraction has 12667 states and 48755 transitions. [2021-06-05 16:44:41,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 12667 states and 48755 transitions. [2021-06-05 16:44:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:41,661 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:41,661 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:41,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4129,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:41,876 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:41,877 INFO L82 PathProgramCache]: Analyzing trace with hash -362417666, now seen corresponding path program 75 times [2021-06-05 16:44:41,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:41,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465983766] [2021-06-05 16:44:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:41,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:41,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465983766] [2021-06-05 16:44:41,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465983766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:41,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027838] [2021-06-05 16:44:41,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:41,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 16:44:41,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:41,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:41,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:42,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:42,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:42,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 16:44:42,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616259713] [2021-06-05 16:44:42,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:44:42,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:42,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:44:42,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:44:42,014 INFO L87 Difference]: Start difference. First operand 12667 states and 48755 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:42,962 INFO L93 Difference]: Finished difference Result 22039 states and 80934 transitions. [2021-06-05 16:44:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 16:44:42,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:43,007 INFO L225 Difference]: With dead ends: 22039 [2021-06-05 16:44:43,007 INFO L226 Difference]: Without dead ends: 22035 [2021-06-05 16:44:43,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 547.9ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 16:44:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22035 states. [2021-06-05 16:44:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22035 to 12921. [2021-06-05 16:44:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12921 states, 12920 states have (on average 3.8388544891640866) internal successors, (49598), 12920 states have internal predecessors, (49598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12921 states to 12921 states and 49598 transitions. [2021-06-05 16:44:43,343 INFO L78 Accepts]: Start accepts. Automaton has 12921 states and 49598 transitions. Word has length 28 [2021-06-05 16:44:43,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:43,343 INFO L482 AbstractCegarLoop]: Abstraction has 12921 states and 49598 transitions. [2021-06-05 16:44:43,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12921 states and 49598 transitions. [2021-06-05 16:44:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:43,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:43,364 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:43,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4130,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:43,577 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash 502966272, now seen corresponding path program 112 times [2021-06-05 16:44:43,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:43,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658347253] [2021-06-05 16:44:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:43,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:43,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658347253] [2021-06-05 16:44:43,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658347253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:43,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826872014] [2021-06-05 16:44:43,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:43,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:43,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:43,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:43,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:43,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826872014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:43,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:43,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:44:43,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250899653] [2021-06-05 16:44:43,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:43,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:43,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:43,700 INFO L87 Difference]: Start difference. First operand 12921 states and 49598 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:44,366 INFO L93 Difference]: Finished difference Result 18745 states and 68634 transitions. [2021-06-05 16:44:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 16:44:44,366 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:44,405 INFO L225 Difference]: With dead ends: 18745 [2021-06-05 16:44:44,405 INFO L226 Difference]: Without dead ends: 18722 [2021-06-05 16:44:44,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 352.7ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 16:44:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18722 states. [2021-06-05 16:44:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18722 to 13216. [2021-06-05 16:44:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13216 states, 13215 states have (on average 3.855996973136587) internal successors, (50957), 13215 states have internal predecessors, (50957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13216 states to 13216 states and 50957 transitions. [2021-06-05 16:44:44,797 INFO L78 Accepts]: Start accepts. Automaton has 13216 states and 50957 transitions. Word has length 28 [2021-06-05 16:44:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:44,797 INFO L482 AbstractCegarLoop]: Abstraction has 13216 states and 50957 transitions. [2021-06-05 16:44:44,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 13216 states and 50957 transitions. [2021-06-05 16:44:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:44,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:44,818 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:45,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4131 [2021-06-05 16:44:45,019 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:45,019 INFO L82 PathProgramCache]: Analyzing trace with hash -179778058, now seen corresponding path program 113 times [2021-06-05 16:44:45,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:45,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546776179] [2021-06-05 16:44:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:45,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:45,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546776179] [2021-06-05 16:44:45,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546776179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:45,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917796530] [2021-06-05 16:44:45,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:45,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:44:45,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:45,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:45,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:45,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917796530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:45,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:45,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:44:45,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064580201] [2021-06-05 16:44:45,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:45,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:45,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:45,142 INFO L87 Difference]: Start difference. First operand 13216 states and 50957 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:45,911 INFO L93 Difference]: Finished difference Result 18738 states and 67728 transitions. [2021-06-05 16:44:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:44:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:45,949 INFO L225 Difference]: With dead ends: 18738 [2021-06-05 16:44:45,949 INFO L226 Difference]: Without dead ends: 18738 [2021-06-05 16:44:45,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 433.3ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 16:44:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2021-06-05 16:44:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 13171. [2021-06-05 16:44:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13171 states, 13170 states have (on average 3.847835990888383) internal successors, (50676), 13170 states have internal predecessors, (50676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13171 states to 13171 states and 50676 transitions. [2021-06-05 16:44:46,235 INFO L78 Accepts]: Start accepts. Automaton has 13171 states and 50676 transitions. Word has length 28 [2021-06-05 16:44:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:46,235 INFO L482 AbstractCegarLoop]: Abstraction has 13171 states and 50676 transitions. [2021-06-05 16:44:46,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13171 states and 50676 transitions. [2021-06-05 16:44:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:46,256 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:46,256 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:46,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4132,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:46,472 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:46,473 INFO L82 PathProgramCache]: Analyzing trace with hash -499896522, now seen corresponding path program 114 times [2021-06-05 16:44:46,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:46,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987842706] [2021-06-05 16:44:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:46,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:46,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987842706] [2021-06-05 16:44:46,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987842706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:46,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61599971] [2021-06-05 16:44:46,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:46,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 16:44:46,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:46,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:46,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:46,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61599971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:46,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:46,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:44:46,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365224310] [2021-06-05 16:44:46,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:44:46,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:46,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:44:46,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:44:46,601 INFO L87 Difference]: Start difference. First operand 13171 states and 50676 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:47,319 INFO L93 Difference]: Finished difference Result 20089 states and 73010 transitions. [2021-06-05 16:44:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 16:44:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:47,360 INFO L225 Difference]: With dead ends: 20089 [2021-06-05 16:44:47,360 INFO L226 Difference]: Without dead ends: 20089 [2021-06-05 16:44:47,360 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 382.9ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 16:44:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20089 states. [2021-06-05 16:44:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20089 to 13878. [2021-06-05 16:44:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13878 states, 13877 states have (on average 3.834186063270159) internal successors, (53207), 13877 states have internal predecessors, (53207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13878 states to 13878 states and 53207 transitions. [2021-06-05 16:44:47,773 INFO L78 Accepts]: Start accepts. Automaton has 13878 states and 53207 transitions. Word has length 28 [2021-06-05 16:44:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:47,773 INFO L482 AbstractCegarLoop]: Abstraction has 13878 states and 53207 transitions. [2021-06-05 16:44:47,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 13878 states and 53207 transitions. [2021-06-05 16:44:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:47,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:47,795 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:48,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4133 [2021-06-05 16:44:48,024 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:48,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:48,024 INFO L82 PathProgramCache]: Analyzing trace with hash 389506442, now seen corresponding path program 115 times [2021-06-05 16:44:48,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:48,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837160077] [2021-06-05 16:44:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:48,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:48,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837160077] [2021-06-05 16:44:48,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837160077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:48,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746260053] [2021-06-05 16:44:48,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:48,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:48,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:48,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746260053] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:48,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:48,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 16:44:48,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185077242] [2021-06-05 16:44:48,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:44:48,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:48,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:44:48,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:44:48,165 INFO L87 Difference]: Start difference. First operand 13878 states and 53207 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:49,018 INFO L93 Difference]: Finished difference Result 22502 states and 80640 transitions. [2021-06-05 16:44:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:44:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:49,062 INFO L225 Difference]: With dead ends: 22502 [2021-06-05 16:44:49,062 INFO L226 Difference]: Without dead ends: 22502 [2021-06-05 16:44:49,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 475.1ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 16:44:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22502 states. [2021-06-05 16:44:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22502 to 14104. [2021-06-05 16:44:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14104 states, 14103 states have (on average 3.8464156562433525) internal successors, (54246), 14103 states have internal predecessors, (54246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14104 states to 14104 states and 54246 transitions. [2021-06-05 16:44:49,385 INFO L78 Accepts]: Start accepts. Automaton has 14104 states and 54246 transitions. Word has length 28 [2021-06-05 16:44:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:49,385 INFO L482 AbstractCegarLoop]: Abstraction has 14104 states and 54246 transitions. [2021-06-05 16:44:49,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 14104 states and 54246 transitions. [2021-06-05 16:44:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:49,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:49,406 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:49,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4134 [2021-06-05 16:44:49,607 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:49,607 INFO L82 PathProgramCache]: Analyzing trace with hash -933026596, now seen corresponding path program 76 times [2021-06-05 16:44:49,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:49,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921112370] [2021-06-05 16:44:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:49,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:49,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921112370] [2021-06-05 16:44:49,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921112370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:49,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82395421] [2021-06-05 16:44:49,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:49,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:49,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:49,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:49,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82395421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:49,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:49,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:44:49,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769561] [2021-06-05 16:44:49,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:49,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:49,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:49,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:49,756 INFO L87 Difference]: Start difference. First operand 14104 states and 54246 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:51,241 INFO L93 Difference]: Finished difference Result 39134 states and 140671 transitions. [2021-06-05 16:44:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 16:44:51,241 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:51,335 INFO L225 Difference]: With dead ends: 39134 [2021-06-05 16:44:51,335 INFO L226 Difference]: Without dead ends: 39134 [2021-06-05 16:44:51,335 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 821.9ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 16:44:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39134 states. [2021-06-05 16:44:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39134 to 15340. [2021-06-05 16:44:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15340 states, 15339 states have (on average 3.892887411174131) internal successors, (59713), 15339 states have internal predecessors, (59713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 59713 transitions. [2021-06-05 16:44:51,992 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 59713 transitions. Word has length 28 [2021-06-05 16:44:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:51,992 INFO L482 AbstractCegarLoop]: Abstraction has 15340 states and 59713 transitions. [2021-06-05 16:44:51,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 59713 transitions. [2021-06-05 16:44:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:52,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:52,016 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:52,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4135,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:52,217 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -366074516, now seen corresponding path program 77 times [2021-06-05 16:44:52,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:52,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268003714] [2021-06-05 16:44:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:52,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:52,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268003714] [2021-06-05 16:44:52,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268003714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:52,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214651884] [2021-06-05 16:44:52,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:52,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 16:44:52,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:52,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:52,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:52,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214651884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:52,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:52,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:44:52,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104965710] [2021-06-05 16:44:52,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:52,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:52,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:52,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:52,370 INFO L87 Difference]: Start difference. First operand 15340 states and 59713 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:53,735 INFO L93 Difference]: Finished difference Result 38160 states and 138109 transitions. [2021-06-05 16:44:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 16:44:53,736 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:53,819 INFO L225 Difference]: With dead ends: 38160 [2021-06-05 16:44:53,819 INFO L226 Difference]: Without dead ends: 38160 [2021-06-05 16:44:53,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 808.6ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 16:44:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38160 states. [2021-06-05 16:44:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38160 to 15314. [2021-06-05 16:44:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15314 states, 15313 states have (on average 3.88930973682492) internal successors, (59557), 15313 states have internal predecessors, (59557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15314 states to 15314 states and 59557 transitions. [2021-06-05 16:44:54,339 INFO L78 Accepts]: Start accepts. Automaton has 15314 states and 59557 transitions. Word has length 28 [2021-06-05 16:44:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:54,339 INFO L482 AbstractCegarLoop]: Abstraction has 15314 states and 59557 transitions. [2021-06-05 16:44:54,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 15314 states and 59557 transitions. [2021-06-05 16:44:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:54,362 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:54,362 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:54,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4136,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:54,563 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash -648300864, now seen corresponding path program 116 times [2021-06-05 16:44:54,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:54,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583403900] [2021-06-05 16:44:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:54,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:54,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583403900] [2021-06-05 16:44:54,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583403900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:54,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898694336] [2021-06-05 16:44:54,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:54,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:44:54,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:54,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:54,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:54,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898694336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:54,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:54,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:44:54,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041230742] [2021-06-05 16:44:54,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:44:54,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:54,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:44:54,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:44:54,752 INFO L87 Difference]: Start difference. First operand 15314 states and 59557 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:55,005 INFO L93 Difference]: Finished difference Result 23675 states and 90680 transitions. [2021-06-05 16:44:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 16:44:55,006 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:55,056 INFO L225 Difference]: With dead ends: 23675 [2021-06-05 16:44:55,056 INFO L226 Difference]: Without dead ends: 23628 [2021-06-05 16:44:55,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-05 16:44:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23628 states. [2021-06-05 16:44:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23628 to 20433. [2021-06-05 16:44:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20433 states, 20432 states have (on average 3.903680501174628) internal successors, (79760), 20432 states have internal predecessors, (79760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20433 states to 20433 states and 79760 transitions. [2021-06-05 16:44:55,451 INFO L78 Accepts]: Start accepts. Automaton has 20433 states and 79760 transitions. Word has length 28 [2021-06-05 16:44:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:55,451 INFO L482 AbstractCegarLoop]: Abstraction has 20433 states and 79760 transitions. [2021-06-05 16:44:55,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 20433 states and 79760 transitions. [2021-06-05 16:44:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:55,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:55,482 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:55,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4137,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:55,682 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:55,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:55,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1261765878, now seen corresponding path program 117 times [2021-06-05 16:44:55,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:55,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136649533] [2021-06-05 16:44:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:55,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:55,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136649533] [2021-06-05 16:44:55,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136649533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:55,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248295878] [2021-06-05 16:44:55,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:55,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:44:55,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:55,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:44:55,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:55,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248295878] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:55,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:55,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 16:44:55,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934077166] [2021-06-05 16:44:55,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:44:55,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:55,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:44:55,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:44:55,783 INFO L87 Difference]: Start difference. First operand 20433 states and 79760 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:56,002 INFO L93 Difference]: Finished difference Result 23187 states and 88130 transitions. [2021-06-05 16:44:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:44:56,003 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:56,053 INFO L225 Difference]: With dead ends: 23187 [2021-06-05 16:44:56,053 INFO L226 Difference]: Without dead ends: 23187 [2021-06-05 16:44:56,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:44:56,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2021-06-05 16:44:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 19936. [2021-06-05 16:44:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19936 states, 19935 states have (on average 3.89204915976925) internal successors, (77588), 19935 states have internal predecessors, (77588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19936 states to 19936 states and 77588 transitions. [2021-06-05 16:44:56,454 INFO L78 Accepts]: Start accepts. Automaton has 19936 states and 77588 transitions. Word has length 28 [2021-06-05 16:44:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:56,454 INFO L482 AbstractCegarLoop]: Abstraction has 19936 states and 77588 transitions. [2021-06-05 16:44:56,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 19936 states and 77588 transitions. [2021-06-05 16:44:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:56,483 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:56,483 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:56,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4138 [2021-06-05 16:44:56,684 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:56,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:56,684 INFO L82 PathProgramCache]: Analyzing trace with hash 310084440, now seen corresponding path program 118 times [2021-06-05 16:44:56,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:56,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863935754] [2021-06-05 16:44:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:56,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:56,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863935754] [2021-06-05 16:44:56,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863935754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:56,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479346058] [2021-06-05 16:44:56,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:56,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:44:56,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:56,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:56,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:56,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479346058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:56,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:56,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 16:44:56,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281235072] [2021-06-05 16:44:56,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:44:56,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:56,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:44:56,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:44:56,844 INFO L87 Difference]: Start difference. First operand 19936 states and 77588 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:44:57,714 INFO L93 Difference]: Finished difference Result 31776 states and 117695 transitions. [2021-06-05 16:44:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 16:44:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:44:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:44:57,784 INFO L225 Difference]: With dead ends: 31776 [2021-06-05 16:44:57,784 INFO L226 Difference]: Without dead ends: 31776 [2021-06-05 16:44:57,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 468.5ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 16:44:57,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31776 states. [2021-06-05 16:44:58,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31776 to 20002. [2021-06-05 16:44:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20002 states, 20001 states have (on average 3.8901054947252636) internal successors, (77806), 20001 states have internal predecessors, (77806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20002 states to 20002 states and 77806 transitions. [2021-06-05 16:44:58,315 INFO L78 Accepts]: Start accepts. Automaton has 20002 states and 77806 transitions. Word has length 28 [2021-06-05 16:44:58,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:44:58,315 INFO L482 AbstractCegarLoop]: Abstraction has 20002 states and 77806 transitions. [2021-06-05 16:44:58,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:44:58,315 INFO L276 IsEmpty]: Start isEmpty. Operand 20002 states and 77806 transitions. [2021-06-05 16:44:58,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:44:58,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:44:58,346 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:44:58,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4139,196 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:58,546 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:44:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:44:58,547 INFO L82 PathProgramCache]: Analyzing trace with hash -666234404, now seen corresponding path program 119 times [2021-06-05 16:44:58,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:44:58,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466134167] [2021-06-05 16:44:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:44:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:44:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:44:58,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:44:58,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466134167] [2021-06-05 16:44:58,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466134167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:58,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926753896] [2021-06-05 16:44:58,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:44:58,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:44:58,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:44:58,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:44:58,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:44:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:44:58,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926753896] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:44:58,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:44:58,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 16:44:58,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320630688] [2021-06-05 16:44:58,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:44:58,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:44:58,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:44:58,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:44:58,689 INFO L87 Difference]: Start difference. First operand 20002 states and 77806 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:00,063 INFO L93 Difference]: Finished difference Result 40610 states and 148783 transitions. [2021-06-05 16:45:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 16:45:00,064 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:00,163 INFO L225 Difference]: With dead ends: 40610 [2021-06-05 16:45:00,163 INFO L226 Difference]: Without dead ends: 40610 [2021-06-05 16:45:00,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 811.3ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 16:45:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40610 states. [2021-06-05 16:45:00,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40610 to 20007. [2021-06-05 16:45:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20007 states, 20006 states have (on average 3.892182345296411) internal successors, (77867), 20006 states have internal predecessors, (77867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20007 states to 20007 states and 77867 transitions. [2021-06-05 16:45:00,718 INFO L78 Accepts]: Start accepts. Automaton has 20007 states and 77867 transitions. Word has length 28 [2021-06-05 16:45:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:00,718 INFO L482 AbstractCegarLoop]: Abstraction has 20007 states and 77867 transitions. [2021-06-05 16:45:00,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 20007 states and 77867 transitions. [2021-06-05 16:45:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:00,748 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:00,748 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:00,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4140 [2021-06-05 16:45:00,949 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:00,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:00,949 INFO L82 PathProgramCache]: Analyzing trace with hash -99282324, now seen corresponding path program 120 times [2021-06-05 16:45:00,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:00,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287697407] [2021-06-05 16:45:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:00,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:00,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287697407] [2021-06-05 16:45:00,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287697407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:00,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077231749] [2021-06-05 16:45:00,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:01,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:45:01,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:01,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:01,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:01,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077231749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:01,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:01,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 16:45:01,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113592318] [2021-06-05 16:45:01,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:45:01,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:01,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:45:01,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:45:01,092 INFO L87 Difference]: Start difference. First operand 20007 states and 77867 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:02,535 INFO L93 Difference]: Finished difference Result 40173 states and 147928 transitions. [2021-06-05 16:45:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 16:45:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:02,635 INFO L225 Difference]: With dead ends: 40173 [2021-06-05 16:45:02,635 INFO L226 Difference]: Without dead ends: 40173 [2021-06-05 16:45:02,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 830.8ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 16:45:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40173 states. [2021-06-05 16:45:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40173 to 19795. [2021-06-05 16:45:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19795 states, 19794 states have (on average 3.884308376275639) internal successors, (76886), 19794 states have internal predecessors, (76886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19795 states to 19795 states and 76886 transitions. [2021-06-05 16:45:03,205 INFO L78 Accepts]: Start accepts. Automaton has 19795 states and 76886 transitions. Word has length 28 [2021-06-05 16:45:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:03,206 INFO L482 AbstractCegarLoop]: Abstraction has 19795 states and 76886 transitions. [2021-06-05 16:45:03,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 19795 states and 76886 transitions. [2021-06-05 16:45:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:03,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:03,238 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:03,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4141 [2021-06-05 16:45:03,438 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:03,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:03,438 INFO L82 PathProgramCache]: Analyzing trace with hash 836856348, now seen corresponding path program 121 times [2021-06-05 16:45:03,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:03,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621372269] [2021-06-05 16:45:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:03,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:03,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621372269] [2021-06-05 16:45:03,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621372269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:03,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762185016] [2021-06-05 16:45:03,464 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:03,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:45:03,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 16:45:03,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762185016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:03,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:03,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 16:45:03,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242920649] [2021-06-05 16:45:03,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:45:03,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:03,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:45:03,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:45:03,544 INFO L87 Difference]: Start difference. First operand 19795 states and 76886 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:03,812 INFO L93 Difference]: Finished difference Result 29286 states and 109348 transitions. [2021-06-05 16:45:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 16:45:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:03,884 INFO L225 Difference]: With dead ends: 29286 [2021-06-05 16:45:03,884 INFO L226 Difference]: Without dead ends: 29269 [2021-06-05 16:45:03,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-05 16:45:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29269 states. [2021-06-05 16:45:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29269 to 20063. [2021-06-05 16:45:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20063 states, 20062 states have (on average 3.8898414913767323) internal successors, (78038), 20062 states have internal predecessors, (78038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20063 states to 20063 states and 78038 transitions. [2021-06-05 16:45:04,372 INFO L78 Accepts]: Start accepts. Automaton has 20063 states and 78038 transitions. Word has length 28 [2021-06-05 16:45:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:04,372 INFO L482 AbstractCegarLoop]: Abstraction has 20063 states and 78038 transitions. [2021-06-05 16:45:04,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 20063 states and 78038 transitions. [2021-06-05 16:45:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:04,531 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:04,531 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:04,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4142,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:04,732 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:04,732 INFO L82 PathProgramCache]: Analyzing trace with hash -306069692, now seen corresponding path program 122 times [2021-06-05 16:45:04,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:04,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145709692] [2021-06-05 16:45:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:04,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:04,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145709692] [2021-06-05 16:45:04,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145709692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:04,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894623794] [2021-06-05 16:45:04,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:04,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:45:04,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:04,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:45:04,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 16:45:04,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894623794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:04,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:04,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 16:45:04,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082959703] [2021-06-05 16:45:04,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:45:04,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:04,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:45:04,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:45:04,870 INFO L87 Difference]: Start difference. First operand 20063 states and 78038 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:05,179 INFO L93 Difference]: Finished difference Result 31067 states and 114897 transitions. [2021-06-05 16:45:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 16:45:05,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:05,254 INFO L225 Difference]: With dead ends: 31067 [2021-06-05 16:45:05,255 INFO L226 Difference]: Without dead ends: 31067 [2021-06-05 16:45:05,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 138.2ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-05 16:45:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31067 states. [2021-06-05 16:45:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31067 to 19732. [2021-06-05 16:45:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19732 states, 19731 states have (on average 3.874714915615022) internal successors, (76452), 19731 states have internal predecessors, (76452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19732 states to 19732 states and 76452 transitions. [2021-06-05 16:45:05,748 INFO L78 Accepts]: Start accepts. Automaton has 19732 states and 76452 transitions. Word has length 28 [2021-06-05 16:45:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:05,748 INFO L482 AbstractCegarLoop]: Abstraction has 19732 states and 76452 transitions. [2021-06-05 16:45:05,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 19732 states and 76452 transitions. [2021-06-05 16:45:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:05,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:05,778 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:05,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4143 [2021-06-05 16:45:05,980 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:05,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1652751258, now seen corresponding path program 123 times [2021-06-05 16:45:05,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:05,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157062333] [2021-06-05 16:45:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:06,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:06,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157062333] [2021-06-05 16:45:06,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157062333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:06,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360191656] [2021-06-05 16:45:06,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:06,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:45:06,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:06,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:06,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:06,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360191656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:06,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:06,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 16:45:06,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438192289] [2021-06-05 16:45:06,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:45:06,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:06,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:45:06,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:45:06,122 INFO L87 Difference]: Start difference. First operand 19732 states and 76452 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:06,866 INFO L93 Difference]: Finished difference Result 29306 states and 108910 transitions. [2021-06-05 16:45:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 16:45:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:06,938 INFO L225 Difference]: With dead ends: 29306 [2021-06-05 16:45:06,938 INFO L226 Difference]: Without dead ends: 29306 [2021-06-05 16:45:06,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 387.6ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 16:45:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29306 states. [2021-06-05 16:45:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29306 to 19780. [2021-06-05 16:45:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19780 states, 19779 states have (on average 3.8734010819556093) internal successors, (76612), 19779 states have internal predecessors, (76612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19780 states to 19780 states and 76612 transitions. [2021-06-05 16:45:07,428 INFO L78 Accepts]: Start accepts. Automaton has 19780 states and 76612 transitions. Word has length 28 [2021-06-05 16:45:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:07,428 INFO L482 AbstractCegarLoop]: Abstraction has 19780 states and 76612 transitions. [2021-06-05 16:45:07,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 19780 states and 76612 transitions. [2021-06-05 16:45:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:07,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:07,463 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:07,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4144 [2021-06-05 16:45:07,663 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash -867837164, now seen corresponding path program 124 times [2021-06-05 16:45:07,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:07,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060607491] [2021-06-05 16:45:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:07,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:07,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060607491] [2021-06-05 16:45:07,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060607491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:07,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835004473] [2021-06-05 16:45:07,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:07,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:45:07,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:07,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:07,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835004473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:07,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:07,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 16:45:07,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720006914] [2021-06-05 16:45:07,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:45:07,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:07,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:45:07,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:45:07,811 INFO L87 Difference]: Start difference. First operand 19780 states and 76612 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:08,872 INFO L93 Difference]: Finished difference Result 30838 states and 113300 transitions. [2021-06-05 16:45:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 16:45:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:08,952 INFO L225 Difference]: With dead ends: 30838 [2021-06-05 16:45:08,952 INFO L226 Difference]: Without dead ends: 30838 [2021-06-05 16:45:08,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 552.6ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 16:45:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30838 states. [2021-06-05 16:45:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30838 to 20326. [2021-06-05 16:45:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20326 states, 20325 states have (on average 3.8521525215252153) internal successors, (78295), 20325 states have internal predecessors, (78295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20326 states to 20326 states and 78295 transitions. [2021-06-05 16:45:09,570 INFO L78 Accepts]: Start accepts. Automaton has 20326 states and 78295 transitions. Word has length 28 [2021-06-05 16:45:09,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:09,570 INFO L482 AbstractCegarLoop]: Abstraction has 20326 states and 78295 transitions. [2021-06-05 16:45:09,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 20326 states and 78295 transitions. [2021-06-05 16:45:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:09,604 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:09,604 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:09,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4145 [2021-06-05 16:45:09,805 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash -912658306, now seen corresponding path program 125 times [2021-06-05 16:45:09,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:09,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240027314] [2021-06-05 16:45:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:09,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:09,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240027314] [2021-06-05 16:45:09,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240027314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:09,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793992606] [2021-06-05 16:45:09,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:09,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:45:09,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:09,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:09,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:09,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793992606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:09,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:09,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 16:45:09,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240968840] [2021-06-05 16:45:09,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:45:09,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:09,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:45:09,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:45:09,979 INFO L87 Difference]: Start difference. First operand 20326 states and 78295 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:10,781 INFO L93 Difference]: Finished difference Result 29955 states and 110977 transitions. [2021-06-05 16:45:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 16:45:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:10,854 INFO L225 Difference]: With dead ends: 29955 [2021-06-05 16:45:10,854 INFO L226 Difference]: Without dead ends: 29951 [2021-06-05 16:45:10,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 448.0ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 16:45:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29951 states. [2021-06-05 16:45:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29951 to 20218. [2021-06-05 16:45:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20218 states, 20217 states have (on average 3.854825147153386) internal successors, (77933), 20217 states have internal predecessors, (77933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20218 states to 20218 states and 77933 transitions. [2021-06-05 16:45:11,337 INFO L78 Accepts]: Start accepts. Automaton has 20218 states and 77933 transitions. Word has length 28 [2021-06-05 16:45:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:11,337 INFO L482 AbstractCegarLoop]: Abstraction has 20218 states and 77933 transitions. [2021-06-05 16:45:11,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 20218 states and 77933 transitions. [2021-06-05 16:45:11,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:11,369 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:11,369 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:11,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4146,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:11,570 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:11,570 INFO L82 PathProgramCache]: Analyzing trace with hash -47274368, now seen corresponding path program 126 times [2021-06-05 16:45:11,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:11,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585023174] [2021-06-05 16:45:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:11,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:11,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585023174] [2021-06-05 16:45:11,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585023174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:11,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485350186] [2021-06-05 16:45:11,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:11,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:45:11,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:11,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:45:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 16:45:11,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485350186] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:11,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:11,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 16:45:11,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753021581] [2021-06-05 16:45:11,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 16:45:11,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:11,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 16:45:11,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 16:45:11,680 INFO L87 Difference]: Start difference. First operand 20218 states and 77933 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:11,902 INFO L93 Difference]: Finished difference Result 25214 states and 93817 transitions. [2021-06-05 16:45:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 16:45:11,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:11,959 INFO L225 Difference]: With dead ends: 25214 [2021-06-05 16:45:11,959 INFO L226 Difference]: Without dead ends: 25214 [2021-06-05 16:45:11,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:45:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25214 states. [2021-06-05 16:45:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25214 to 20528. [2021-06-05 16:45:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20528 states, 20527 states have (on average 3.8459589808544843) internal successors, (78946), 20527 states have internal predecessors, (78946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20528 states to 20528 states and 78946 transitions. [2021-06-05 16:45:12,441 INFO L78 Accepts]: Start accepts. Automaton has 20528 states and 78946 transitions. Word has length 28 [2021-06-05 16:45:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:12,441 INFO L482 AbstractCegarLoop]: Abstraction has 20528 states and 78946 transitions. [2021-06-05 16:45:12,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 20528 states and 78946 transitions. [2021-06-05 16:45:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:12,479 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:12,480 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:12,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4147,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:12,680 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:12,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:12,680 INFO L82 PathProgramCache]: Analyzing trace with hash 882925376, now seen corresponding path program 127 times [2021-06-05 16:45:12,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:12,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982803273] [2021-06-05 16:45:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:12,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:12,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982803273] [2021-06-05 16:45:12,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982803273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:12,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859868897] [2021-06-05 16:45:12,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:12,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:12,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 16:45:12,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859868897] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:12,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:12,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 16:45:12,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062122395] [2021-06-05 16:45:12,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:45:12,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:12,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:45:12,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:45:12,821 INFO L87 Difference]: Start difference. First operand 20528 states and 78946 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:13,622 INFO L93 Difference]: Finished difference Result 30964 states and 113417 transitions. [2021-06-05 16:45:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 16:45:13,625 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:13,709 INFO L225 Difference]: With dead ends: 30964 [2021-06-05 16:45:13,709 INFO L226 Difference]: Without dead ends: 30964 [2021-06-05 16:45:13,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 419.1ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 16:45:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30964 states. [2021-06-05 16:45:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30964 to 22146. [2021-06-05 16:45:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22146 states, 22145 states have (on average 3.8581169564235718) internal successors, (85438), 22145 states have internal predecessors, (85438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:14,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22146 states to 22146 states and 85438 transitions. [2021-06-05 16:45:14,262 INFO L78 Accepts]: Start accepts. Automaton has 22146 states and 85438 transitions. Word has length 28 [2021-06-05 16:45:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:14,262 INFO L482 AbstractCegarLoop]: Abstraction has 22146 states and 85438 transitions. [2021-06-05 16:45:14,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22146 states and 85438 transitions. [2021-06-05 16:45:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:14,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:14,300 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:14,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4148,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:14,513 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:14,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash -956846952, now seen corresponding path program 128 times [2021-06-05 16:45:14,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:14,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65199876] [2021-06-05 16:45:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:14,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:14,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65199876] [2021-06-05 16:45:14,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65199876] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:14,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831014698] [2021-06-05 16:45:14,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:14,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:45:14,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:14,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:14,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 16:45:14,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831014698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:14,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:14,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 16:45:14,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409751549] [2021-06-05 16:45:14,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:45:14,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:14,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:45:14,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:45:14,650 INFO L87 Difference]: Start difference. First operand 22146 states and 85438 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:15,292 INFO L93 Difference]: Finished difference Result 29203 states and 108883 transitions. [2021-06-05 16:45:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:45:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:15,367 INFO L225 Difference]: With dead ends: 29203 [2021-06-05 16:45:15,367 INFO L226 Difference]: Without dead ends: 29191 [2021-06-05 16:45:15,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 326.8ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 16:45:15,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29191 states. [2021-06-05 16:45:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29191 to 22298. [2021-06-05 16:45:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22298 states, 22297 states have (on average 3.8527156119657353) internal successors, (85904), 22297 states have internal predecessors, (85904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22298 states to 22298 states and 85904 transitions. [2021-06-05 16:45:15,934 INFO L78 Accepts]: Start accepts. Automaton has 22298 states and 85904 transitions. Word has length 28 [2021-06-05 16:45:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:15,934 INFO L482 AbstractCegarLoop]: Abstraction has 22298 states and 85904 transitions. [2021-06-05 16:45:15,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 22298 states and 85904 transitions. [2021-06-05 16:45:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:15,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:15,971 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:16,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4149,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:16,187 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1587630268, now seen corresponding path program 129 times [2021-06-05 16:45:16,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:16,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481406938] [2021-06-05 16:45:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:16,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:16,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481406938] [2021-06-05 16:45:16,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481406938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:16,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229032637] [2021-06-05 16:45:16,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:16,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:45:16,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:16,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 16:45:16,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:16,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229032637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:16,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:16,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 16:45:16,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945898314] [2021-06-05 16:45:16,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 16:45:16,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:16,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 16:45:16,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 16:45:16,286 INFO L87 Difference]: Start difference. First operand 22298 states and 85904 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:16,590 INFO L93 Difference]: Finished difference Result 25557 states and 96861 transitions. [2021-06-05 16:45:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 16:45:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:16,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:16,648 INFO L225 Difference]: With dead ends: 25557 [2021-06-05 16:45:16,648 INFO L226 Difference]: Without dead ends: 25557 [2021-06-05 16:45:16,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-05 16:45:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25557 states. [2021-06-05 16:45:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25557 to 23101. [2021-06-05 16:45:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23101 states, 23100 states have (on average 3.847748917748918) internal successors, (88883), 23100 states have internal predecessors, (88883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23101 states to 23101 states and 88883 transitions. [2021-06-05 16:45:17,084 INFO L78 Accepts]: Start accepts. Automaton has 23101 states and 88883 transitions. Word has length 28 [2021-06-05 16:45:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:17,084 INFO L482 AbstractCegarLoop]: Abstraction has 23101 states and 88883 transitions. [2021-06-05 16:45:17,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 23101 states and 88883 transitions. [2021-06-05 16:45:17,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:17,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:17,127 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:17,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4150 [2021-06-05 16:45:17,328 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:17,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1143968700, now seen corresponding path program 130 times [2021-06-05 16:45:17,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:17,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768931561] [2021-06-05 16:45:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:17,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:17,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768931561] [2021-06-05 16:45:17,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768931561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:17,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728869043] [2021-06-05 16:45:17,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:17,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:45:17,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:17,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:17,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:17,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728869043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:17,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:17,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 16:45:17,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431043084] [2021-06-05 16:45:17,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:45:17,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:17,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:45:17,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:45:17,464 INFO L87 Difference]: Start difference. First operand 23101 states and 88883 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:18,229 INFO L93 Difference]: Finished difference Result 30944 states and 114247 transitions. [2021-06-05 16:45:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 16:45:18,229 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:18,307 INFO L225 Difference]: With dead ends: 30944 [2021-06-05 16:45:18,307 INFO L226 Difference]: Without dead ends: 30944 [2021-06-05 16:45:18,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 408.6ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 16:45:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30944 states. [2021-06-05 16:45:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30944 to 24307. [2021-06-05 16:45:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24307 states, 24306 states have (on average 3.8156010861515677) internal successors, (92742), 24306 states have internal predecessors, (92742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24307 states to 24307 states and 92742 transitions. [2021-06-05 16:45:18,870 INFO L78 Accepts]: Start accepts. Automaton has 24307 states and 92742 transitions. Word has length 28 [2021-06-05 16:45:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:18,870 INFO L482 AbstractCegarLoop]: Abstraction has 24307 states and 92742 transitions. [2021-06-05 16:45:18,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 24307 states and 92742 transitions. [2021-06-05 16:45:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:18,908 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:18,908 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:19,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4151,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:19,109 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash -403875748, now seen corresponding path program 131 times [2021-06-05 16:45:19,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:19,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141873580] [2021-06-05 16:45:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:19,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:19,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141873580] [2021-06-05 16:45:19,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141873580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:19,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277387077] [2021-06-05 16:45:19,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:19,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 16:45:19,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:19,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:19,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277387077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:19,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:19,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:45:19,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686082615] [2021-06-05 16:45:19,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:45:19,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:19,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:45:19,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:45:19,245 INFO L87 Difference]: Start difference. First operand 24307 states and 92742 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:19,877 INFO L93 Difference]: Finished difference Result 30042 states and 111856 transitions. [2021-06-05 16:45:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 16:45:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:19,945 INFO L225 Difference]: With dead ends: 30042 [2021-06-05 16:45:19,945 INFO L226 Difference]: Without dead ends: 30034 [2021-06-05 16:45:19,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 295.0ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 16:45:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30034 states. [2021-06-05 16:45:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30034 to 24129. [2021-06-05 16:45:20,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24129 states, 24128 states have (on average 3.821742374005305) internal successors, (92211), 24128 states have internal predecessors, (92211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24129 states to 24129 states and 92211 transitions. [2021-06-05 16:45:20,564 INFO L78 Accepts]: Start accepts. Automaton has 24129 states and 92211 transitions. Word has length 28 [2021-06-05 16:45:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:20,564 INFO L482 AbstractCegarLoop]: Abstraction has 24129 states and 92211 transitions. [2021-06-05 16:45:20,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 24129 states and 92211 transitions. [2021-06-05 16:45:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:20,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:20,603 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:20,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4152 [2021-06-05 16:45:20,819 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1046121180, now seen corresponding path program 132 times [2021-06-05 16:45:20,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:20,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020230037] [2021-06-05 16:45:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:20,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:20,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020230037] [2021-06-05 16:45:20,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020230037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:20,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413203628] [2021-06-05 16:45:20,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:20,873 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:45:20,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:20,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:20,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:20,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413203628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:20,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:20,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:45:20,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156320886] [2021-06-05 16:45:20,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:45:20,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:20,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:45:20,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:45:20,942 INFO L87 Difference]: Start difference. First operand 24129 states and 92211 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:21,644 INFO L93 Difference]: Finished difference Result 31875 states and 117476 transitions. [2021-06-05 16:45:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 16:45:21,644 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:21,721 INFO L225 Difference]: With dead ends: 31875 [2021-06-05 16:45:21,721 INFO L226 Difference]: Without dead ends: 31875 [2021-06-05 16:45:21,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 372.8ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 16:45:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31875 states. [2021-06-05 16:45:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31875 to 25163. [2021-06-05 16:45:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25163 states, 25162 states have (on average 3.797631348859391) internal successors, (95556), 25162 states have internal predecessors, (95556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25163 states to 25163 states and 95556 transitions. [2021-06-05 16:45:22,325 INFO L78 Accepts]: Start accepts. Automaton has 25163 states and 95556 transitions. Word has length 28 [2021-06-05 16:45:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:22,325 INFO L482 AbstractCegarLoop]: Abstraction has 25163 states and 95556 transitions. [2021-06-05 16:45:22,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 25163 states and 95556 transitions. [2021-06-05 16:45:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:22,362 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:22,362 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:22,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4153 [2021-06-05 16:45:22,563 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:22,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash -36901476, now seen corresponding path program 133 times [2021-06-05 16:45:22,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:22,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266486478] [2021-06-05 16:45:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:22,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:22,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266486478] [2021-06-05 16:45:22,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266486478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:22,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736574129] [2021-06-05 16:45:22,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:22,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:45:22,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:22,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736574129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:22,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:22,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 16:45:22,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864850812] [2021-06-05 16:45:22,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:45:22,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:22,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:45:22,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:45:22,675 INFO L87 Difference]: Start difference. First operand 25163 states and 95556 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:23,054 INFO L93 Difference]: Finished difference Result 30826 states and 116166 transitions. [2021-06-05 16:45:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 16:45:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:23,130 INFO L225 Difference]: With dead ends: 30826 [2021-06-05 16:45:23,130 INFO L226 Difference]: Without dead ends: 30813 [2021-06-05 16:45:23,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 16:45:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30813 states. [2021-06-05 16:45:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30813 to 29259. [2021-06-05 16:45:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29259 states, 29258 states have (on average 3.81594777496753) internal successors, (111647), 29258 states have internal predecessors, (111647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29259 states to 29259 states and 111647 transitions. [2021-06-05 16:45:23,955 INFO L78 Accepts]: Start accepts. Automaton has 29259 states and 111647 transitions. Word has length 28 [2021-06-05 16:45:23,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:23,955 INFO L482 AbstractCegarLoop]: Abstraction has 29259 states and 111647 transitions. [2021-06-05 16:45:23,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 29259 states and 111647 transitions. [2021-06-05 16:45:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:24,012 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:24,012 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:24,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4154,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:24,213 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:24,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1434176642, now seen corresponding path program 134 times [2021-06-05 16:45:24,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:24,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748620736] [2021-06-05 16:45:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:24,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:24,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748620736] [2021-06-05 16:45:24,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748620736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:24,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008674141] [2021-06-05 16:45:24,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:24,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:45:24,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:24,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:45:24,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:24,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008674141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:24,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:24,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 16:45:24,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235245767] [2021-06-05 16:45:24,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:45:24,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:24,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:45:24,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:45:24,315 INFO L87 Difference]: Start difference. First operand 29259 states and 111647 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:24,675 INFO L93 Difference]: Finished difference Result 32262 states and 120978 transitions. [2021-06-05 16:45:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 16:45:24,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:24,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:24,758 INFO L225 Difference]: With dead ends: 32262 [2021-06-05 16:45:24,758 INFO L226 Difference]: Without dead ends: 32262 [2021-06-05 16:45:24,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 123.4ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 16:45:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32262 states. [2021-06-05 16:45:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32262 to 29004. [2021-06-05 16:45:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29004 states, 29003 states have (on average 3.8122952797986414) internal successors, (110568), 29003 states have internal predecessors, (110568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29004 states to 29004 states and 110568 transitions. [2021-06-05 16:45:25,613 INFO L78 Accepts]: Start accepts. Automaton has 29004 states and 110568 transitions. Word has length 28 [2021-06-05 16:45:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:25,613 INFO L482 AbstractCegarLoop]: Abstraction has 29004 states and 110568 transitions. [2021-06-05 16:45:25,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 29004 states and 110568 transitions. [2021-06-05 16:45:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:25,674 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:25,674 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:25,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4155 [2021-06-05 16:45:25,874 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:25,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1001300038, now seen corresponding path program 135 times [2021-06-05 16:45:25,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:25,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284551569] [2021-06-05 16:45:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:25,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:25,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284551569] [2021-06-05 16:45:25,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284551569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:25,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016210283] [2021-06-05 16:45:25,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:25,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:45:25,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:25,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:25,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:26,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016210283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:26,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:26,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:45:26,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548971424] [2021-06-05 16:45:26,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:45:26,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:26,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:45:26,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:45:26,010 INFO L87 Difference]: Start difference. First operand 29004 states and 110568 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:26,732 INFO L93 Difference]: Finished difference Result 35430 states and 131896 transitions. [2021-06-05 16:45:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 16:45:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:26,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:26,936 INFO L225 Difference]: With dead ends: 35430 [2021-06-05 16:45:26,936 INFO L226 Difference]: Without dead ends: 35422 [2021-06-05 16:45:26,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 267.1ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 16:45:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35422 states. [2021-06-05 16:45:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35422 to 28970. [2021-06-05 16:45:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28970 states, 28969 states have (on average 3.8127308502191997) internal successors, (110451), 28969 states have internal predecessors, (110451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28970 states to 28970 states and 110451 transitions. [2021-06-05 16:45:27,605 INFO L78 Accepts]: Start accepts. Automaton has 28970 states and 110451 transitions. Word has length 28 [2021-06-05 16:45:27,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:27,605 INFO L482 AbstractCegarLoop]: Abstraction has 28970 states and 110451 transitions. [2021-06-05 16:45:27,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 28970 states and 110451 transitions. [2021-06-05 16:45:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:27,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:27,652 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:27,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4156,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:27,852 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:27,853 INFO L82 PathProgramCache]: Analyzing trace with hash 105479222, now seen corresponding path program 136 times [2021-06-05 16:45:27,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:27,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777409286] [2021-06-05 16:45:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:27,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:27,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777409286] [2021-06-05 16:45:27,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777409286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:27,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318005827] [2021-06-05 16:45:27,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:27,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:45:27,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:27,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:45:27,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:27,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318005827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:27,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:27,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 16:45:27,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439658215] [2021-06-05 16:45:27,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:45:27,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:27,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:45:27,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:45:27,959 INFO L87 Difference]: Start difference. First operand 28970 states and 110451 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:28,471 INFO L93 Difference]: Finished difference Result 31816 states and 119913 transitions. [2021-06-05 16:45:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:45:28,472 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:28,651 INFO L225 Difference]: With dead ends: 31816 [2021-06-05 16:45:28,651 INFO L226 Difference]: Without dead ends: 31816 [2021-06-05 16:45:28,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-05 16:45:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31816 states. [2021-06-05 16:45:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31816 to 29502. [2021-06-05 16:45:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29502 states, 29501 states have (on average 3.8112267380766753) internal successors, (112435), 29501 states have internal predecessors, (112435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29502 states to 29502 states and 112435 transitions. [2021-06-05 16:45:29,303 INFO L78 Accepts]: Start accepts. Automaton has 29502 states and 112435 transitions. Word has length 28 [2021-06-05 16:45:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:29,303 INFO L482 AbstractCegarLoop]: Abstraction has 29502 states and 112435 transitions. [2021-06-05 16:45:29,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 29502 states and 112435 transitions. [2021-06-05 16:45:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:29,355 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:29,356 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:29,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4157,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:29,556 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1598636696, now seen corresponding path program 137 times [2021-06-05 16:45:29,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:29,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945326502] [2021-06-05 16:45:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:29,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:29,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945326502] [2021-06-05 16:45:29,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945326502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:29,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104198319] [2021-06-05 16:45:29,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:29,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:45:29,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:29,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:29,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:45:29,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104198319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:29,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:29,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 16:45:29,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628934394] [2021-06-05 16:45:29,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:45:29,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:29,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:45:29,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:45:29,700 INFO L87 Difference]: Start difference. First operand 29502 states and 112435 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:29,857 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-05 16:45:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:30,550 INFO L93 Difference]: Finished difference Result 36375 states and 135365 transitions. [2021-06-05 16:45:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 16:45:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:30,638 INFO L225 Difference]: With dead ends: 36375 [2021-06-05 16:45:30,638 INFO L226 Difference]: Without dead ends: 36351 [2021-06-05 16:45:30,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 409.4ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 16:45:30,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36351 states. [2021-06-05 16:45:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36351 to 29684. [2021-06-05 16:45:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29684 states, 29683 states have (on average 3.806960212916484) internal successors, (113002), 29683 states have internal predecessors, (113002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29684 states to 29684 states and 113002 transitions. [2021-06-05 16:45:31,303 INFO L78 Accepts]: Start accepts. Automaton has 29684 states and 113002 transitions. Word has length 28 [2021-06-05 16:45:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:31,303 INFO L482 AbstractCegarLoop]: Abstraction has 29684 states and 113002 transitions. [2021-06-05 16:45:31,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29684 states and 113002 transitions. [2021-06-05 16:45:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:31,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:31,517 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:31,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4158,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:31,721 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:31,721 INFO L82 PathProgramCache]: Analyzing trace with hash -252372998, now seen corresponding path program 138 times [2021-06-05 16:45:31,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:31,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065287006] [2021-06-05 16:45:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:31,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:31,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065287006] [2021-06-05 16:45:31,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065287006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:31,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967254599] [2021-06-05 16:45:31,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:31,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:45:31,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:31,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:45:31,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:31,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967254599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:31,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:31,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-05 16:45:31,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574685607] [2021-06-05 16:45:31,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:45:31,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:31,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:45:31,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:45:31,843 INFO L87 Difference]: Start difference. First operand 29684 states and 113002 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:32,346 INFO L93 Difference]: Finished difference Result 32240 states and 121414 transitions. [2021-06-05 16:45:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 16:45:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:32,430 INFO L225 Difference]: With dead ends: 32240 [2021-06-05 16:45:32,431 INFO L226 Difference]: Without dead ends: 32240 [2021-06-05 16:45:32,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 225.9ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-05 16:45:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32240 states. [2021-06-05 16:45:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32240 to 29610. [2021-06-05 16:45:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29610 states, 29609 states have (on average 3.8078287007328853) internal successors, (112746), 29609 states have internal predecessors, (112746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29610 states to 29610 states and 112746 transitions. [2021-06-05 16:45:33,180 INFO L78 Accepts]: Start accepts. Automaton has 29610 states and 112746 transitions. Word has length 28 [2021-06-05 16:45:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:33,180 INFO L482 AbstractCegarLoop]: Abstraction has 29610 states and 112746 transitions. [2021-06-05 16:45:33,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 29610 states and 112746 transitions. [2021-06-05 16:45:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:33,228 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:33,228 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:33,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4159,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:33,428 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:33,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:33,429 INFO L82 PathProgramCache]: Analyzing trace with hash 606143132, now seen corresponding path program 139 times [2021-06-05 16:45:33,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:33,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565362248] [2021-06-05 16:45:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:33,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:33,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565362248] [2021-06-05 16:45:33,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565362248] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:33,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944555723] [2021-06-05 16:45:33,475 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:33,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:33,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:33,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944555723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:33,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:33,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 16:45:33,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471198783] [2021-06-05 16:45:33,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:45:33,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:33,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:45:33,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:45:33,576 INFO L87 Difference]: Start difference. First operand 29610 states and 112746 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:34,334 INFO L93 Difference]: Finished difference Result 36298 states and 135106 transitions. [2021-06-05 16:45:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 16:45:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:34,422 INFO L225 Difference]: With dead ends: 36298 [2021-06-05 16:45:34,422 INFO L226 Difference]: Without dead ends: 36258 [2021-06-05 16:45:34,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 303.4ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 16:45:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36258 states. [2021-06-05 16:45:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36258 to 29776. [2021-06-05 16:45:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29776 states, 29775 states have (on average 3.803761544920235) internal successors, (113257), 29775 states have internal predecessors, (113257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29776 states to 29776 states and 113257 transitions. [2021-06-05 16:45:35,220 INFO L78 Accepts]: Start accepts. Automaton has 29776 states and 113257 transitions. Word has length 28 [2021-06-05 16:45:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:35,220 INFO L482 AbstractCegarLoop]: Abstraction has 29776 states and 113257 transitions. [2021-06-05 16:45:35,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 29776 states and 113257 transitions. [2021-06-05 16:45:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:35,276 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:35,276 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:35,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4160 [2021-06-05 16:45:35,477 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:35,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1649950116, now seen corresponding path program 140 times [2021-06-05 16:45:35,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:35,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148561410] [2021-06-05 16:45:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:35,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:35,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148561410] [2021-06-05 16:45:35,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148561410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:35,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396003489] [2021-06-05 16:45:35,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:35,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:45:35,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:35,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:35,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:35,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396003489] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:35,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:35,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:45:35,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277900265] [2021-06-05 16:45:35,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:45:35,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:35,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:45:35,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:45:35,644 INFO L87 Difference]: Start difference. First operand 29776 states and 113257 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:37,025 INFO L93 Difference]: Finished difference Result 68142 states and 250877 transitions. [2021-06-05 16:45:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 16:45:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:37,377 INFO L225 Difference]: With dead ends: 68142 [2021-06-05 16:45:37,377 INFO L226 Difference]: Without dead ends: 68142 [2021-06-05 16:45:37,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 779.0ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 16:45:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68142 states. [2021-06-05 16:45:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68142 to 37503. [2021-06-05 16:45:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37503 states, 37502 states have (on average 3.8855527705189057) internal successors, (145716), 37502 states have internal predecessors, (145716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37503 states to 37503 states and 145716 transitions. [2021-06-05 16:45:38,742 INFO L78 Accepts]: Start accepts. Automaton has 37503 states and 145716 transitions. Word has length 28 [2021-06-05 16:45:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:38,742 INFO L482 AbstractCegarLoop]: Abstraction has 37503 states and 145716 transitions. [2021-06-05 16:45:38,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 37503 states and 145716 transitions. [2021-06-05 16:45:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:38,816 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:38,816 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:39,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4161,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:39,025 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:39,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1082998036, now seen corresponding path program 141 times [2021-06-05 16:45:39,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:39,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352310533] [2021-06-05 16:45:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:39,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:39,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352310533] [2021-06-05 16:45:39,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352310533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:39,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541387533] [2021-06-05 16:45:39,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:39,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:45:39,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:39,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:39,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541387533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:39,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:39,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:45:39,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953833357] [2021-06-05 16:45:39,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:45:39,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:39,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:45:39,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:45:39,186 INFO L87 Difference]: Start difference. First operand 37503 states and 145716 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:40,662 INFO L93 Difference]: Finished difference Result 67515 states and 249216 transitions. [2021-06-05 16:45:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 16:45:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:40,832 INFO L225 Difference]: With dead ends: 67515 [2021-06-05 16:45:40,833 INFO L226 Difference]: Without dead ends: 67515 [2021-06-05 16:45:40,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 669.9ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 16:45:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67515 states. [2021-06-05 16:45:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67515 to 37500. [2021-06-05 16:45:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37500 states, 37499 states have (on average 3.885490279740793) internal successors, (145702), 37499 states have internal predecessors, (145702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37500 states to 37500 states and 145702 transitions. [2021-06-05 16:45:42,162 INFO L78 Accepts]: Start accepts. Automaton has 37500 states and 145702 transitions. Word has length 28 [2021-06-05 16:45:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:42,162 INFO L482 AbstractCegarLoop]: Abstraction has 37500 states and 145702 transitions. [2021-06-05 16:45:42,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 37500 states and 145702 transitions. [2021-06-05 16:45:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:42,222 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:42,222 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:42,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4162 [2021-06-05 16:45:42,423 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:42,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:42,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2039623402, now seen corresponding path program 142 times [2021-06-05 16:45:42,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:42,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777858399] [2021-06-05 16:45:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:42,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:42,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777858399] [2021-06-05 16:45:42,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777858399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:42,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835934096] [2021-06-05 16:45:42,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:42,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:45:42,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:42,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:42,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:42,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835934096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:42,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:42,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 16:45:42,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88026884] [2021-06-05 16:45:42,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:45:42,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:42,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:45:42,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:45:42,567 INFO L87 Difference]: Start difference. First operand 37500 states and 145702 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:43,815 INFO L93 Difference]: Finished difference Result 62937 states and 233716 transitions. [2021-06-05 16:45:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 16:45:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:43,997 INFO L225 Difference]: With dead ends: 62937 [2021-06-05 16:45:43,997 INFO L226 Difference]: Without dead ends: 62937 [2021-06-05 16:45:43,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 546.1ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 16:45:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62937 states. [2021-06-05 16:45:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62937 to 37524. [2021-06-05 16:45:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37524 states, 37523 states have (on average 3.885830024251792) internal successors, (145808), 37523 states have internal predecessors, (145808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 145808 transitions. [2021-06-05 16:45:45,560 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 145808 transitions. Word has length 28 [2021-06-05 16:45:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:45,560 INFO L482 AbstractCegarLoop]: Abstraction has 37524 states and 145808 transitions. [2021-06-05 16:45:45,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 145808 transitions. [2021-06-05 16:45:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:45,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:45,652 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:45,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4163 [2021-06-05 16:45:45,852 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:45,853 INFO L82 PathProgramCache]: Analyzing trace with hash 2120999490, now seen corresponding path program 143 times [2021-06-05 16:45:45,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:45,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431855207] [2021-06-05 16:45:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:45,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:45,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431855207] [2021-06-05 16:45:45,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431855207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:45,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928530867] [2021-06-05 16:45:45,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:45,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:45:45,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:45,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:45,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:45,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928530867] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:45,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:45,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 16:45:45,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638376196] [2021-06-05 16:45:45,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:45:45,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:45,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:45:45,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:45:45,985 INFO L87 Difference]: Start difference. First operand 37524 states and 145808 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:47,015 INFO L93 Difference]: Finished difference Result 62070 states and 231476 transitions. [2021-06-05 16:45:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 16:45:47,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:47,350 INFO L225 Difference]: With dead ends: 62070 [2021-06-05 16:45:47,351 INFO L226 Difference]: Without dead ends: 62062 [2021-06-05 16:45:47,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 451.0ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 16:45:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62062 states. [2021-06-05 16:45:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62062 to 37524. [2021-06-05 16:45:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37524 states, 37523 states have (on average 3.885670122324974) internal successors, (145802), 37523 states have internal predecessors, (145802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 145802 transitions. [2021-06-05 16:45:48,587 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 145802 transitions. Word has length 28 [2021-06-05 16:45:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:48,587 INFO L482 AbstractCegarLoop]: Abstraction has 37524 states and 145802 transitions. [2021-06-05 16:45:48,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 145802 transitions. [2021-06-05 16:45:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:48,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:48,655 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:48,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4164,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:48,856 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:48,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1243310590, now seen corresponding path program 144 times [2021-06-05 16:45:48,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:48,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936580626] [2021-06-05 16:45:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:48,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:48,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936580626] [2021-06-05 16:45:48,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936580626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:48,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156689613] [2021-06-05 16:45:48,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:48,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:45:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:48,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:48,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:49,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156689613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:49,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:49,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:45:49,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588852901] [2021-06-05 16:45:49,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:45:49,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:49,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:45:49,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:45:49,017 INFO L87 Difference]: Start difference. First operand 37524 states and 145802 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:50,286 INFO L93 Difference]: Finished difference Result 61748 states and 230607 transitions. [2021-06-05 16:45:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 16:45:50,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:50,454 INFO L225 Difference]: With dead ends: 61748 [2021-06-05 16:45:50,454 INFO L226 Difference]: Without dead ends: 61748 [2021-06-05 16:45:50,454 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 553.8ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 16:45:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61748 states. [2021-06-05 16:45:51,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61748 to 37532. [2021-06-05 16:45:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37532 states, 37531 states have (on average 3.8857477818336843) internal successors, (145836), 37531 states have internal predecessors, (145836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37532 states to 37532 states and 145836 transitions. [2021-06-05 16:45:51,867 INFO L78 Accepts]: Start accepts. Automaton has 37532 states and 145836 transitions. Word has length 28 [2021-06-05 16:45:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:51,867 INFO L482 AbstractCegarLoop]: Abstraction has 37532 states and 145836 transitions. [2021-06-05 16:45:51,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 37532 states and 145836 transitions. [2021-06-05 16:45:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:51,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:51,928 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:52,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4165 [2021-06-05 16:45:52,129 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 399728564, now seen corresponding path program 145 times [2021-06-05 16:45:52,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:52,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343146070] [2021-06-05 16:45:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:52,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:52,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343146070] [2021-06-05 16:45:52,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343146070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:52,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347322449] [2021-06-05 16:45:52,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:52,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:52,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:52,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347322449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:52,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:52,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:45:52,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279776638] [2021-06-05 16:45:52,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:45:52,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:52,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:45:52,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:45:52,268 INFO L87 Difference]: Start difference. First operand 37532 states and 145836 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:53,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:53,258 INFO L93 Difference]: Finished difference Result 61537 states and 230081 transitions. [2021-06-05 16:45:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 16:45:53,259 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:53,434 INFO L225 Difference]: With dead ends: 61537 [2021-06-05 16:45:53,434 INFO L226 Difference]: Without dead ends: 61529 [2021-06-05 16:45:53,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 452.8ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 16:45:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61529 states. [2021-06-05 16:45:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61529 to 37532. [2021-06-05 16:45:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37532 states, 37531 states have (on average 3.885694492552823) internal successors, (145834), 37531 states have internal predecessors, (145834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37532 states to 37532 states and 145834 transitions. [2021-06-05 16:45:54,829 INFO L78 Accepts]: Start accepts. Automaton has 37532 states and 145834 transitions. Word has length 28 [2021-06-05 16:45:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:54,829 INFO L482 AbstractCegarLoop]: Abstraction has 37532 states and 145834 transitions. [2021-06-05 16:45:54,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 37532 states and 145834 transitions. [2021-06-05 16:45:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:54,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:54,891 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:55,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 223 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4166 [2021-06-05 16:45:55,091 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1403156548, now seen corresponding path program 146 times [2021-06-05 16:45:55,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:55,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540652395] [2021-06-05 16:45:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:55,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:55,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540652395] [2021-06-05 16:45:55,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540652395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:55,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339464357] [2021-06-05 16:45:55,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:55,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:45:55,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:55,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:55,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:55,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339464357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:55,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:55,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 16:45:55,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669765506] [2021-06-05 16:45:55,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:45:55,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:55,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:45:55,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:45:55,219 INFO L87 Difference]: Start difference. First operand 37532 states and 145834 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:56,480 INFO L93 Difference]: Finished difference Result 60940 states and 226561 transitions. [2021-06-05 16:45:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 16:45:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:56,649 INFO L225 Difference]: With dead ends: 60940 [2021-06-05 16:45:56,649 INFO L226 Difference]: Without dead ends: 60940 [2021-06-05 16:45:56,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 557.6ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 16:45:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60940 states. [2021-06-05 16:45:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60940 to 40347. [2021-06-05 16:45:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40347 states, 40346 states have (on average 3.8897040598820207) internal successors, (156934), 40346 states have internal predecessors, (156934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40347 states to 40347 states and 156934 transitions. [2021-06-05 16:45:57,955 INFO L78 Accepts]: Start accepts. Automaton has 40347 states and 156934 transitions. Word has length 28 [2021-06-05 16:45:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:45:57,955 INFO L482 AbstractCegarLoop]: Abstraction has 40347 states and 156934 transitions. [2021-06-05 16:45:57,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 40347 states and 156934 transitions. [2021-06-05 16:45:58,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:45:58,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:45:58,018 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:45:58,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4167 [2021-06-05 16:45:58,218 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:45:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:45:58,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1484532636, now seen corresponding path program 147 times [2021-06-05 16:45:58,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:45:58,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173636742] [2021-06-05 16:45:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:45:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:45:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:58,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:45:58,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173636742] [2021-06-05 16:45:58,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173636742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:58,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002176298] [2021-06-05 16:45:58,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:45:58,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 16:45:58,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:45:58,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:45:58,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:45:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:45:58,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002176298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:45:58,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:45:58,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 16:45:58,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506291792] [2021-06-05 16:45:58,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:45:58,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:45:58,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:45:58,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:45:58,340 INFO L87 Difference]: Start difference. First operand 40347 states and 156934 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:45:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:45:59,453 INFO L93 Difference]: Finished difference Result 60463 states and 225303 transitions. [2021-06-05 16:45:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 16:45:59,453 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:45:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:45:59,612 INFO L225 Difference]: With dead ends: 60463 [2021-06-05 16:45:59,613 INFO L226 Difference]: Without dead ends: 60455 [2021-06-05 16:45:59,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 437.6ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:45:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60455 states. [2021-06-05 16:46:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60455 to 40063. [2021-06-05 16:46:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40063 states, 40062 states have (on average 3.8951125755079627) internal successors, (156046), 40062 states have internal predecessors, (156046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40063 states to 40063 states and 156046 transitions. [2021-06-05 16:46:01,155 INFO L78 Accepts]: Start accepts. Automaton has 40063 states and 156046 transitions. Word has length 28 [2021-06-05 16:46:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:01,155 INFO L482 AbstractCegarLoop]: Abstraction has 40063 states and 156046 transitions. [2021-06-05 16:46:01,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 40063 states and 156046 transitions. [2021-06-05 16:46:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:01,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:01,218 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:01,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4168,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:01,419 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash -30559336, now seen corresponding path program 148 times [2021-06-05 16:46:01,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:01,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789534150] [2021-06-05 16:46:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:01,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:01,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789534150] [2021-06-05 16:46:01,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789534150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:01,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436167973] [2021-06-05 16:46:01,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:01,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:46:01,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:01,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:01,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:01,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436167973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:01,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:01,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 16:46:01,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059359908] [2021-06-05 16:46:01,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:46:01,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:46:01,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:46:01,539 INFO L87 Difference]: Start difference. First operand 40063 states and 156046 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:02,311 INFO L93 Difference]: Finished difference Result 59012 states and 221313 transitions. [2021-06-05 16:46:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 16:46:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:02,466 INFO L225 Difference]: With dead ends: 59012 [2021-06-05 16:46:02,466 INFO L226 Difference]: Without dead ends: 58988 [2021-06-05 16:46:02,467 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 321.9ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 16:46:02,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58988 states. [2021-06-05 16:46:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58988 to 39973. [2021-06-05 16:46:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39973 states, 39972 states have (on average 3.8949514660262183) internal successors, (155689), 39972 states have internal predecessors, (155689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39973 states to 39973 states and 155689 transitions. [2021-06-05 16:46:03,871 INFO L78 Accepts]: Start accepts. Automaton has 39973 states and 155689 transitions. Word has length 28 [2021-06-05 16:46:03,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:03,871 INFO L482 AbstractCegarLoop]: Abstraction has 39973 states and 155689 transitions. [2021-06-05 16:46:03,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 39973 states and 155689 transitions. [2021-06-05 16:46:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:03,938 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:03,939 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:04,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4169,226 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:04,154 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1566567380, now seen corresponding path program 149 times [2021-06-05 16:46:04,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:04,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249253088] [2021-06-05 16:46:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:46:04,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:04,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249253088] [2021-06-05 16:46:04,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249253088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:04,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687612927] [2021-06-05 16:46:04,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:04,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 16:46:04,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:04,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:04,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:04,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687612927] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:04,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:04,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:46:04,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933255275] [2021-06-05 16:46:04,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:04,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:04,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:04,301 INFO L87 Difference]: Start difference. First operand 39973 states and 155689 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:05,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:05,630 INFO L93 Difference]: Finished difference Result 60251 states and 224712 transitions. [2021-06-05 16:46:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 16:46:05,631 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:05,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:05,810 INFO L225 Difference]: With dead ends: 60251 [2021-06-05 16:46:05,811 INFO L226 Difference]: Without dead ends: 60251 [2021-06-05 16:46:05,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 564.7ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 16:46:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60251 states. [2021-06-05 16:46:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60251 to 40069. [2021-06-05 16:46:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40069 states, 40068 states have (on average 3.8934561245882002) internal successors, (156003), 40068 states have internal predecessors, (156003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40069 states to 40069 states and 156003 transitions. [2021-06-05 16:46:07,167 INFO L78 Accepts]: Start accepts. Automaton has 40069 states and 156003 transitions. Word has length 28 [2021-06-05 16:46:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:07,167 INFO L482 AbstractCegarLoop]: Abstraction has 40069 states and 156003 transitions. [2021-06-05 16:46:07,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 40069 states and 156003 transitions. [2021-06-05 16:46:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:07,232 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:07,232 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:07,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4170,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:07,433 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1085360762, now seen corresponding path program 150 times [2021-06-05 16:46:07,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:07,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830151112] [2021-06-05 16:46:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:46:07,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:07,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830151112] [2021-06-05 16:46:07,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830151112] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:07,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539578976] [2021-06-05 16:46:07,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:07,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:46:07,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:07,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:07,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:07,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539578976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:07,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:07,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 16:46:07,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153225440] [2021-06-05 16:46:07,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:07,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:07,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:07,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:07,572 INFO L87 Difference]: Start difference. First operand 40069 states and 156003 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:08,685 INFO L93 Difference]: Finished difference Result 59938 states and 223824 transitions. [2021-06-05 16:46:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 16:46:08,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:08,853 INFO L225 Difference]: With dead ends: 59938 [2021-06-05 16:46:08,853 INFO L226 Difference]: Without dead ends: 59930 [2021-06-05 16:46:08,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 443.0ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 16:46:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59930 states. [2021-06-05 16:46:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59930 to 40001. [2021-06-05 16:46:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40001 states, 40000 states have (on average 3.894775) internal successors, (155791), 40000 states have internal predecessors, (155791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40001 states to 40001 states and 155791 transitions. [2021-06-05 16:46:10,091 INFO L78 Accepts]: Start accepts. Automaton has 40001 states and 155791 transitions. Word has length 28 [2021-06-05 16:46:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:10,091 INFO L482 AbstractCegarLoop]: Abstraction has 40001 states and 155791 transitions. [2021-06-05 16:46:10,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 40001 states and 155791 transitions. [2021-06-05 16:46:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:10,156 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:10,156 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:10,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4171,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:10,357 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:10,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1942149356, now seen corresponding path program 151 times [2021-06-05 16:46:10,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:10,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473958508] [2021-06-05 16:46:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:46:10,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:10,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473958508] [2021-06-05 16:46:10,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473958508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:10,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292153196] [2021-06-05 16:46:10,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:10,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:10,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:10,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292153196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:10,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:10,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 16:46:10,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019075655] [2021-06-05 16:46:10,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:46:10,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:10,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:46:10,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:46:10,486 INFO L87 Difference]: Start difference. First operand 40001 states and 155791 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:11,491 INFO L93 Difference]: Finished difference Result 58669 states and 220313 transitions. [2021-06-05 16:46:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 16:46:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:11,656 INFO L225 Difference]: With dead ends: 58669 [2021-06-05 16:46:11,657 INFO L226 Difference]: Without dead ends: 58645 [2021-06-05 16:46:11,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 328.9ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 16:46:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58645 states. [2021-06-05 16:46:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58645 to 39977. [2021-06-05 16:46:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39977 states, 39976 states have (on average 3.894911947168301) internal successors, (155703), 39976 states have internal predecessors, (155703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39977 states to 39977 states and 155703 transitions. [2021-06-05 16:46:12,934 INFO L78 Accepts]: Start accepts. Automaton has 39977 states and 155703 transitions. Word has length 28 [2021-06-05 16:46:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:12,934 INFO L482 AbstractCegarLoop]: Abstraction has 39977 states and 155703 transitions. [2021-06-05 16:46:12,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 39977 states and 155703 transitions. [2021-06-05 16:46:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:12,995 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:12,995 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:13,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4172 [2021-06-05 16:46:13,195 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:13,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:13,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1119483464, now seen corresponding path program 152 times [2021-06-05 16:46:13,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:13,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942978751] [2021-06-05 16:46:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:13,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:13,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942978751] [2021-06-05 16:46:13,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942978751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:13,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141695409] [2021-06-05 16:46:13,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:13,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:46:13,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:13,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:13,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:13,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141695409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:13,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:13,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:46:13,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958314549] [2021-06-05 16:46:13,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:46:13,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:46:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:46:13,320 INFO L87 Difference]: Start difference. First operand 39977 states and 155703 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:13,874 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2021-06-05 16:46:14,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:14,927 INFO L93 Difference]: Finished difference Result 61863 states and 229407 transitions. [2021-06-05 16:46:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 16:46:14,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:15,094 INFO L225 Difference]: With dead ends: 61863 [2021-06-05 16:46:15,095 INFO L226 Difference]: Without dead ends: 61863 [2021-06-05 16:46:15,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 984.2ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 16:46:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61863 states. [2021-06-05 16:46:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61863 to 44335. [2021-06-05 16:46:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44335 states, 44334 states have (on average 3.8447692515902014) internal successors, (170454), 44334 states have internal predecessors, (170454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44335 states to 44335 states and 170454 transitions. [2021-06-05 16:46:16,573 INFO L78 Accepts]: Start accepts. Automaton has 44335 states and 170454 transitions. Word has length 28 [2021-06-05 16:46:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:16,573 INFO L482 AbstractCegarLoop]: Abstraction has 44335 states and 170454 transitions. [2021-06-05 16:46:16,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 44335 states and 170454 transitions. [2021-06-05 16:46:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:16,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:16,650 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:16,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4173 [2021-06-05 16:46:16,853 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1200859552, now seen corresponding path program 153 times [2021-06-05 16:46:16,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:16,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332206869] [2021-06-05 16:46:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:16,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:16,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332206869] [2021-06-05 16:46:16,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332206869] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:16,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229800161] [2021-06-05 16:46:16,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:16,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:46:16,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:16,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:16,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:16,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229800161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:16,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:16,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:46:16,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850650827] [2021-06-05 16:46:16,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:46:16,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:16,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:46:16,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:46:16,982 INFO L87 Difference]: Start difference. First operand 44335 states and 170454 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:18,209 INFO L93 Difference]: Finished difference Result 61094 states and 227301 transitions. [2021-06-05 16:46:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 16:46:18,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:18,583 INFO L225 Difference]: With dead ends: 61094 [2021-06-05 16:46:18,583 INFO L226 Difference]: Without dead ends: 61086 [2021-06-05 16:46:18,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 651.8ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 16:46:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61086 states. [2021-06-05 16:46:19,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61086 to 43181. [2021-06-05 16:46:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43181 states, 43180 states have (on average 3.8640805928670683) internal successors, (166851), 43180 states have internal predecessors, (166851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43181 states to 43181 states and 166851 transitions. [2021-06-05 16:46:19,814 INFO L78 Accepts]: Start accepts. Automaton has 43181 states and 166851 transitions. Word has length 28 [2021-06-05 16:46:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:19,814 INFO L482 AbstractCegarLoop]: Abstraction has 43181 states and 166851 transitions. [2021-06-05 16:46:19,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 43181 states and 166851 transitions. [2021-06-05 16:46:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:19,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:19,882 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:20,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4174 [2021-06-05 16:46:20,082 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:20,083 INFO L82 PathProgramCache]: Analyzing trace with hash -314232420, now seen corresponding path program 154 times [2021-06-05 16:46:20,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:20,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534082689] [2021-06-05 16:46:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:20,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:20,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534082689] [2021-06-05 16:46:20,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534082689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:20,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374711429] [2021-06-05 16:46:20,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:20,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:46:20,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:20,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:20,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:20,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374711429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:20,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:20,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:46:20,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117596373] [2021-06-05 16:46:20,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:46:20,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:20,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:46:20,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:46:20,201 INFO L87 Difference]: Start difference. First operand 43181 states and 166851 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:21,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:21,480 INFO L93 Difference]: Finished difference Result 59433 states and 222664 transitions. [2021-06-05 16:46:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 16:46:21,481 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:21,633 INFO L225 Difference]: With dead ends: 59433 [2021-06-05 16:46:21,633 INFO L226 Difference]: Without dead ends: 59409 [2021-06-05 16:46:21,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 530.4ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 16:46:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59409 states. [2021-06-05 16:46:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59409 to 43201. [2021-06-05 16:46:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43201 states, 43200 states have (on average 3.861782407407407) internal successors, (166829), 43200 states have internal predecessors, (166829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43201 states to 43201 states and 166829 transitions. [2021-06-05 16:46:22,975 INFO L78 Accepts]: Start accepts. Automaton has 43201 states and 166829 transitions. Word has length 28 [2021-06-05 16:46:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:22,975 INFO L482 AbstractCegarLoop]: Abstraction has 43201 states and 166829 transitions. [2021-06-05 16:46:22,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 43201 states and 166829 transitions. [2021-06-05 16:46:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:23,043 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:23,043 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:23,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4175 [2021-06-05 16:46:23,244 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:23,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1316197732, now seen corresponding path program 155 times [2021-06-05 16:46:23,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:23,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101483059] [2021-06-05 16:46:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:23,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:23,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101483059] [2021-06-05 16:46:23,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101483059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:23,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767933439] [2021-06-05 16:46:23,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:23,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:46:23,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:23,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:23,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:23,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767933439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:23,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:23,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 16:46:23,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859135884] [2021-06-05 16:46:23,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:46:23,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:46:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:46:23,362 INFO L87 Difference]: Start difference. First operand 43201 states and 166829 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:24,610 INFO L93 Difference]: Finished difference Result 60686 states and 226187 transitions. [2021-06-05 16:46:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 16:46:24,610 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:24,770 INFO L225 Difference]: With dead ends: 60686 [2021-06-05 16:46:24,770 INFO L226 Difference]: Without dead ends: 60646 [2021-06-05 16:46:24,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 486.9ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:46:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60646 states. [2021-06-05 16:46:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60646 to 43335. [2021-06-05 16:46:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43335 states, 43334 states have (on average 3.8610790603221488) internal successors, (167316), 43334 states have internal predecessors, (167316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43335 states to 43335 states and 167316 transitions. [2021-06-05 16:46:26,071 INFO L78 Accepts]: Start accepts. Automaton has 43335 states and 167316 transitions. Word has length 28 [2021-06-05 16:46:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:26,071 INFO L482 AbstractCegarLoop]: Abstraction has 43335 states and 167316 transitions. [2021-06-05 16:46:26,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 43335 states and 167316 transitions. [2021-06-05 16:46:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:26,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:26,140 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:26,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4176 [2021-06-05 16:46:26,340 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:26,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1262992088, now seen corresponding path program 156 times [2021-06-05 16:46:26,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:26,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557870241] [2021-06-05 16:46:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:26,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:26,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557870241] [2021-06-05 16:46:26,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557870241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:26,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274213316] [2021-06-05 16:46:26,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:26,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:46:26,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:26,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:26,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:26,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274213316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:26,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:26,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 16:46:26,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460815892] [2021-06-05 16:46:26,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:46:26,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:26,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:46:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:46:26,504 INFO L87 Difference]: Start difference. First operand 43335 states and 167316 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:28,091 INFO L93 Difference]: Finished difference Result 59923 states and 223885 transitions. [2021-06-05 16:46:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 16:46:28,092 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:28,256 INFO L225 Difference]: With dead ends: 59923 [2021-06-05 16:46:28,256 INFO L226 Difference]: Without dead ends: 59923 [2021-06-05 16:46:28,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 977.3ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 16:46:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59923 states. [2021-06-05 16:46:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59923 to 44240. [2021-06-05 16:46:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44240 states, 44239 states have (on average 3.851511110106467) internal successors, (170387), 44239 states have internal predecessors, (170387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44240 states to 44240 states and 170387 transitions. [2021-06-05 16:46:29,646 INFO L78 Accepts]: Start accepts. Automaton has 44240 states and 170387 transitions. Word has length 28 [2021-06-05 16:46:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:29,646 INFO L482 AbstractCegarLoop]: Abstraction has 44240 states and 170387 transitions. [2021-06-05 16:46:29,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 44240 states and 170387 transitions. [2021-06-05 16:46:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:29,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:29,715 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:29,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 234 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4177 [2021-06-05 16:46:29,915 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:29,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1388936054, now seen corresponding path program 157 times [2021-06-05 16:46:29,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:29,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022153389] [2021-06-05 16:46:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:29,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:29,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022153389] [2021-06-05 16:46:29,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022153389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:29,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057061208] [2021-06-05 16:46:29,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:29,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:29,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:30,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057061208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:30,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:30,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 16:46:30,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940758614] [2021-06-05 16:46:30,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:46:30,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:30,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:46:30,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:46:30,063 INFO L87 Difference]: Start difference. First operand 44240 states and 170387 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:30,457 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-05 16:46:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:31,427 INFO L93 Difference]: Finished difference Result 59425 states and 222490 transitions. [2021-06-05 16:46:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 16:46:31,428 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:31,586 INFO L225 Difference]: With dead ends: 59425 [2021-06-05 16:46:31,586 INFO L226 Difference]: Without dead ends: 59417 [2021-06-05 16:46:31,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 831.6ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 16:46:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59417 states. [2021-06-05 16:46:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59417 to 44164. [2021-06-05 16:46:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44164 states, 44163 states have (on average 3.8527953264044563) internal successors, (170151), 44163 states have internal predecessors, (170151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44164 states to 44164 states and 170151 transitions. [2021-06-05 16:46:32,845 INFO L78 Accepts]: Start accepts. Automaton has 44164 states and 170151 transitions. Word has length 28 [2021-06-05 16:46:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:32,845 INFO L482 AbstractCegarLoop]: Abstraction has 44164 states and 170151 transitions. [2021-06-05 16:46:32,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 44164 states and 170151 transitions. [2021-06-05 16:46:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:32,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:32,915 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:33,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4178 [2021-06-05 16:46:33,121 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1638574064, now seen corresponding path program 158 times [2021-06-05 16:46:33,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:33,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275417530] [2021-06-05 16:46:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:33,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:33,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275417530] [2021-06-05 16:46:33,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275417530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:33,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574191613] [2021-06-05 16:46:33,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:33,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:46:33,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:33,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:33,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:33,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574191613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:33,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:33,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:46:33,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027506319] [2021-06-05 16:46:33,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:33,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:33,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:33,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:33,457 INFO L87 Difference]: Start difference. First operand 44164 states and 170151 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:34,499 INFO L93 Difference]: Finished difference Result 58902 states and 221244 transitions. [2021-06-05 16:46:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 16:46:34,500 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:34,660 INFO L225 Difference]: With dead ends: 58902 [2021-06-05 16:46:34,661 INFO L226 Difference]: Without dead ends: 58878 [2021-06-05 16:46:34,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 519.0ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 16:46:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58878 states. [2021-06-05 16:46:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58878 to 44150. [2021-06-05 16:46:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44150 states, 44149 states have (on average 3.8527712971981245) internal successors, (170096), 44149 states have internal predecessors, (170096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44150 states to 44150 states and 170096 transitions. [2021-06-05 16:46:36,293 INFO L78 Accepts]: Start accepts. Automaton has 44150 states and 170096 transitions. Word has length 28 [2021-06-05 16:46:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:36,293 INFO L482 AbstractCegarLoop]: Abstraction has 44150 states and 170096 transitions. [2021-06-05 16:46:36,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 44150 states and 170096 transitions. [2021-06-05 16:46:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:36,371 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:36,371 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:36,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4179,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:36,571 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:36,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1972807316, now seen corresponding path program 159 times [2021-06-05 16:46:36,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:36,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167743434] [2021-06-05 16:46:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:36,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:36,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167743434] [2021-06-05 16:46:36,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167743434] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:36,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756540624] [2021-06-05 16:46:36,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:36,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:46:36,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:36,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:36,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:36,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756540624] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:36,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:36,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 16:46:36,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425180675] [2021-06-05 16:46:36,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:46:36,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:36,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:46:36,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:46:36,704 INFO L87 Difference]: Start difference. First operand 44150 states and 170096 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:37,781 INFO L93 Difference]: Finished difference Result 58684 states and 220551 transitions. [2021-06-05 16:46:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 16:46:37,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:37,944 INFO L225 Difference]: With dead ends: 58684 [2021-06-05 16:46:37,944 INFO L226 Difference]: Without dead ends: 58644 [2021-06-05 16:46:37,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 533.8ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 16:46:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58644 states. [2021-06-05 16:46:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58644 to 44499. [2021-06-05 16:46:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44499 states, 44498 states have (on average 3.854667625511259) internal successors, (171525), 44498 states have internal predecessors, (171525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44499 states to 44499 states and 171525 transitions. [2021-06-05 16:46:39,460 INFO L78 Accepts]: Start accepts. Automaton has 44499 states and 171525 transitions. Word has length 28 [2021-06-05 16:46:39,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:39,461 INFO L482 AbstractCegarLoop]: Abstraction has 44499 states and 171525 transitions. [2021-06-05 16:46:39,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 44499 states and 171525 transitions. [2021-06-05 16:46:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:39,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:39,526 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:39,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4180,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:39,726 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1825824890, now seen corresponding path program 160 times [2021-06-05 16:46:39,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:39,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477306314] [2021-06-05 16:46:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:39,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:39,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477306314] [2021-06-05 16:46:39,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477306314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:39,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954075421] [2021-06-05 16:46:39,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:39,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:46:39,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:39,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:39,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954075421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:39,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:39,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:46:39,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841178483] [2021-06-05 16:46:39,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:39,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:39,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:39,873 INFO L87 Difference]: Start difference. First operand 44499 states and 171525 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:41,154 INFO L93 Difference]: Finished difference Result 71216 states and 265043 transitions. [2021-06-05 16:46:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 16:46:41,154 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:41,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:41,352 INFO L225 Difference]: With dead ends: 71216 [2021-06-05 16:46:41,352 INFO L226 Difference]: Without dead ends: 71216 [2021-06-05 16:46:41,352 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 621.9ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 16:46:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71216 states. [2021-06-05 16:46:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71216 to 45665. [2021-06-05 16:46:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45665 states, 45664 states have (on average 3.8691310441485633) internal successors, (176680), 45664 states have internal predecessors, (176680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45665 states to 45665 states and 176680 transitions. [2021-06-05 16:46:42,909 INFO L78 Accepts]: Start accepts. Automaton has 45665 states and 176680 transitions. Word has length 28 [2021-06-05 16:46:42,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:42,909 INFO L482 AbstractCegarLoop]: Abstraction has 45665 states and 176680 transitions. [2021-06-05 16:46:42,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 45665 states and 176680 transitions. [2021-06-05 16:46:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:42,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:42,975 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:43,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4181,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:43,176 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1151103012, now seen corresponding path program 161 times [2021-06-05 16:46:43,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:43,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459464365] [2021-06-05 16:46:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:43,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:43,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459464365] [2021-06-05 16:46:43,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459464365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:43,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827443478] [2021-06-05 16:46:43,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:43,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:46:43,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:43,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:43,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:43,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827443478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:43,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:43,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:46:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968884385] [2021-06-05 16:46:43,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:43,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:43,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:43,317 INFO L87 Difference]: Start difference. First operand 45665 states and 176680 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:44,404 INFO L93 Difference]: Finished difference Result 65301 states and 246293 transitions. [2021-06-05 16:46:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 16:46:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:44,836 INFO L225 Difference]: With dead ends: 65301 [2021-06-05 16:46:44,836 INFO L226 Difference]: Without dead ends: 65301 [2021-06-05 16:46:44,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 499.9ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 16:46:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65301 states. [2021-06-05 16:46:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65301 to 45695. [2021-06-05 16:46:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45695 states, 45694 states have (on average 3.8689324637808027) internal successors, (176787), 45694 states have internal predecessors, (176787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45695 states to 45695 states and 176787 transitions. [2021-06-05 16:46:46,184 INFO L78 Accepts]: Start accepts. Automaton has 45695 states and 176787 transitions. Word has length 28 [2021-06-05 16:46:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:46,184 INFO L482 AbstractCegarLoop]: Abstraction has 45695 states and 176787 transitions. [2021-06-05 16:46:46,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 45695 states and 176787 transitions. [2021-06-05 16:46:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:46,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:46,254 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:46,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4182,239 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:46,455 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1490504108, now seen corresponding path program 162 times [2021-06-05 16:46:46,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:46,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553729803] [2021-06-05 16:46:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:46,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:46,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553729803] [2021-06-05 16:46:46,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553729803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:46,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720465342] [2021-06-05 16:46:46,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:46,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:46:46,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:46,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:46,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720465342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:46,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:46,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 16:46:46,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115280839] [2021-06-05 16:46:46,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:46:46,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:46,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:46:46,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:46:46,613 INFO L87 Difference]: Start difference. First operand 45695 states and 176787 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:48,338 INFO L93 Difference]: Finished difference Result 66159 states and 248729 transitions. [2021-06-05 16:46:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 16:46:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:48,528 INFO L225 Difference]: With dead ends: 66159 [2021-06-05 16:46:48,529 INFO L226 Difference]: Without dead ends: 66159 [2021-06-05 16:46:48,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 840.4ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 16:46:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66159 states. [2021-06-05 16:46:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66159 to 45959. [2021-06-05 16:46:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45959 states, 45958 states have (on average 3.8653770834239958) internal successors, (177645), 45958 states have internal predecessors, (177645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45959 states to 45959 states and 177645 transitions. [2021-06-05 16:46:49,963 INFO L78 Accepts]: Start accepts. Automaton has 45959 states and 177645 transitions. Word has length 28 [2021-06-05 16:46:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:49,964 INFO L482 AbstractCegarLoop]: Abstraction has 45959 states and 177645 transitions. [2021-06-05 16:46:49,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 45959 states and 177645 transitions. [2021-06-05 16:46:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:50,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:50,031 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:50,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4183 [2021-06-05 16:46:50,231 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:50,231 INFO L82 PathProgramCache]: Analyzing trace with hash 152535046, now seen corresponding path program 163 times [2021-06-05 16:46:50,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:50,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263517035] [2021-06-05 16:46:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:50,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:50,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263517035] [2021-06-05 16:46:50,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263517035] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:50,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593269979] [2021-06-05 16:46:50,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:50,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:50,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:50,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593269979] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:50,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:50,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 16:46:50,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786976337] [2021-06-05 16:46:50,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:46:50,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:50,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:46:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:46:50,383 INFO L87 Difference]: Start difference. First operand 45959 states and 177645 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:51,843 INFO L93 Difference]: Finished difference Result 65371 states and 246494 transitions. [2021-06-05 16:46:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 16:46:51,843 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:51,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:52,020 INFO L225 Difference]: With dead ends: 65371 [2021-06-05 16:46:52,020 INFO L226 Difference]: Without dead ends: 65367 [2021-06-05 16:46:52,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 865.1ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 16:46:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65367 states. [2021-06-05 16:46:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65367 to 45595. [2021-06-05 16:46:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45595 states, 45594 states have (on average 3.8691275167785233) internal successors, (176409), 45594 states have internal predecessors, (176409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45595 states to 45595 states and 176409 transitions. [2021-06-05 16:46:53,367 INFO L78 Accepts]: Start accepts. Automaton has 45595 states and 176409 transitions. Word has length 28 [2021-06-05 16:46:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:53,367 INFO L482 AbstractCegarLoop]: Abstraction has 45595 states and 176409 transitions. [2021-06-05 16:46:53,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 45595 states and 176409 transitions. [2021-06-05 16:46:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:53,437 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:53,437 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:53,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4184,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:53,637 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1936993134, now seen corresponding path program 164 times [2021-06-05 16:46:53,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:53,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373315764] [2021-06-05 16:46:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:53,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:53,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373315764] [2021-06-05 16:46:53,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373315764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:53,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955082683] [2021-06-05 16:46:53,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:53,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:46:53,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:53,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:53,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:53,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955082683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:53,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:53,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:46:53,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994296068] [2021-06-05 16:46:53,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:53,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:53,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:53,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:53,787 INFO L87 Difference]: Start difference. First operand 45595 states and 176409 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:54,259 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2021-06-05 16:46:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:54,899 INFO L93 Difference]: Finished difference Result 59692 states and 226868 transitions. [2021-06-05 16:46:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 16:46:54,900 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:55,064 INFO L225 Difference]: With dead ends: 59692 [2021-06-05 16:46:55,064 INFO L226 Difference]: Without dead ends: 59692 [2021-06-05 16:46:55,064 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 674.0ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 16:46:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59692 states. [2021-06-05 16:46:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59692 to 45611. [2021-06-05 16:46:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45611 states, 45610 states have (on average 3.8710151282613463) internal successors, (176557), 45610 states have internal predecessors, (176557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45611 states to 45611 states and 176557 transitions. [2021-06-05 16:46:56,345 INFO L78 Accepts]: Start accepts. Automaton has 45611 states and 176557 transitions. Word has length 28 [2021-06-05 16:46:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:56,345 INFO L482 AbstractCegarLoop]: Abstraction has 45611 states and 176557 transitions. [2021-06-05 16:46:56,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 45611 states and 176557 transitions. [2021-06-05 16:46:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:56,418 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:56,418 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:56,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4185,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:56,619 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash -756673454, now seen corresponding path program 165 times [2021-06-05 16:46:56,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:56,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408602603] [2021-06-05 16:46:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:56,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:56,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408602603] [2021-06-05 16:46:56,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408602603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:56,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046347954] [2021-06-05 16:46:56,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:56,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:46:56,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:56,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:56,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:56,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046347954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:56,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:56,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:46:56,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443343914] [2021-06-05 16:46:56,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:56,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:56,770 INFO L87 Difference]: Start difference. First operand 45611 states and 176557 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:46:57,758 INFO L93 Difference]: Finished difference Result 59006 states and 224993 transitions. [2021-06-05 16:46:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 16:46:57,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:46:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:46:57,917 INFO L225 Difference]: With dead ends: 59006 [2021-06-05 16:46:57,917 INFO L226 Difference]: Without dead ends: 58994 [2021-06-05 16:46:57,917 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 334.3ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 16:46:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58994 states. [2021-06-05 16:46:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58994 to 45545. [2021-06-05 16:46:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45545 states, 45544 states have (on average 3.8721675742139468) internal successors, (176354), 45544 states have internal predecessors, (176354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45545 states to 45545 states and 176354 transitions. [2021-06-05 16:46:59,314 INFO L78 Accepts]: Start accepts. Automaton has 45545 states and 176354 transitions. Word has length 28 [2021-06-05 16:46:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:46:59,315 INFO L482 AbstractCegarLoop]: Abstraction has 45545 states and 176354 transitions. [2021-06-05 16:46:59,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:46:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 45545 states and 176354 transitions. [2021-06-05 16:46:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:46:59,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:46:59,388 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:46:59,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4186 [2021-06-05 16:46:59,588 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:46:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:46:59,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1537074702, now seen corresponding path program 166 times [2021-06-05 16:46:59,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:46:59,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498079399] [2021-06-05 16:46:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:46:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:46:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:59,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:46:59,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498079399] [2021-06-05 16:46:59,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498079399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:59,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393713325] [2021-06-05 16:46:59,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:46:59,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:46:59,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:46:59,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:46:59,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:46:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:46:59,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393713325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:46:59,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:46:59,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 16:46:59,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251741944] [2021-06-05 16:46:59,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 16:46:59,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:46:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 16:46:59,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 16:46:59,732 INFO L87 Difference]: Start difference. First operand 45545 states and 176354 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:00,652 INFO L93 Difference]: Finished difference Result 50032 states and 191152 transitions. [2021-06-05 16:47:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 16:47:00,653 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:00,792 INFO L225 Difference]: With dead ends: 50032 [2021-06-05 16:47:00,792 INFO L226 Difference]: Without dead ends: 50032 [2021-06-05 16:47:00,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 295.5ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 16:47:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50032 states. [2021-06-05 16:47:01,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50032 to 45753. [2021-06-05 16:47:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45753 states, 45752 states have (on average 3.86968875677566) internal successors, (177046), 45752 states have internal predecessors, (177046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45753 states to 45753 states and 177046 transitions. [2021-06-05 16:47:01,974 INFO L78 Accepts]: Start accepts. Automaton has 45753 states and 177046 transitions. Word has length 28 [2021-06-05 16:47:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:01,974 INFO L482 AbstractCegarLoop]: Abstraction has 45753 states and 177046 transitions. [2021-06-05 16:47:01,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 45753 states and 177046 transitions. [2021-06-05 16:47:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:02,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:02,046 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:02,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4187 [2021-06-05 16:47:02,246 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:02,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:02,247 INFO L82 PathProgramCache]: Analyzing trace with hash 538506736, now seen corresponding path program 167 times [2021-06-05 16:47:02,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:02,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312848325] [2021-06-05 16:47:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:02,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:02,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312848325] [2021-06-05 16:47:02,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312848325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:02,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091639668] [2021-06-05 16:47:02,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:02,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:47:02,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:02,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:47:02,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:02,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091639668] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:02,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:02,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 16:47:02,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87647485] [2021-06-05 16:47:02,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 16:47:02,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:02,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 16:47:02,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 16:47:02,377 INFO L87 Difference]: Start difference. First operand 45753 states and 177046 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:02,942 INFO L93 Difference]: Finished difference Result 49879 states and 190754 transitions. [2021-06-05 16:47:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 16:47:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:03,069 INFO L225 Difference]: With dead ends: 49879 [2021-06-05 16:47:03,070 INFO L226 Difference]: Without dead ends: 49875 [2021-06-05 16:47:03,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 230.4ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:47:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49875 states. [2021-06-05 16:47:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49875 to 45693. [2021-06-05 16:47:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45693 states, 45692 states have (on average 3.8705681519740875) internal successors, (176854), 45692 states have internal predecessors, (176854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45693 states to 45693 states and 176854 transitions. [2021-06-05 16:47:04,282 INFO L78 Accepts]: Start accepts. Automaton has 45693 states and 176854 transitions. Word has length 28 [2021-06-05 16:47:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:04,282 INFO L482 AbstractCegarLoop]: Abstraction has 45693 states and 176854 transitions. [2021-06-05 16:47:04,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 45693 states and 176854 transitions. [2021-06-05 16:47:04,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:04,355 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:04,355 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:04,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4188 [2021-06-05 16:47:04,555 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:04,556 INFO L82 PathProgramCache]: Analyzing trace with hash 508703680, now seen corresponding path program 78 times [2021-06-05 16:47:04,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:04,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058936365] [2021-06-05 16:47:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:04,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:04,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058936365] [2021-06-05 16:47:04,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058936365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:04,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734153135] [2021-06-05 16:47:04,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:04,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:47:04,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:04,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:47:04,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:04,840 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-06-05 16:47:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:04,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734153135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:04,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:04,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 16:47:04,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343599829] [2021-06-05 16:47:04,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:47:04,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:04,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:47:04,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:47:04,865 INFO L87 Difference]: Start difference. First operand 45693 states and 176854 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:05,389 INFO L93 Difference]: Finished difference Result 49934 states and 190867 transitions. [2021-06-05 16:47:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 16:47:05,394 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:05,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:05,529 INFO L225 Difference]: With dead ends: 49934 [2021-06-05 16:47:05,529 INFO L226 Difference]: Without dead ends: 49934 [2021-06-05 16:47:05,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 193.6ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 16:47:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49934 states. [2021-06-05 16:47:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49934 to 45797. [2021-06-05 16:47:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45797 states, 45796 states have (on average 3.8688531749497774) internal successors, (177178), 45796 states have internal predecessors, (177178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45797 states to 45797 states and 177178 transitions. [2021-06-05 16:47:06,697 INFO L78 Accepts]: Start accepts. Automaton has 45797 states and 177178 transitions. Word has length 28 [2021-06-05 16:47:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:06,697 INFO L482 AbstractCegarLoop]: Abstraction has 45797 states and 177178 transitions. [2021-06-05 16:47:06,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 45797 states and 177178 transitions. [2021-06-05 16:47:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:06,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:06,771 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:06,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4189,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:06,971 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:06,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:06,972 INFO L82 PathProgramCache]: Analyzing trace with hash -751583464, now seen corresponding path program 79 times [2021-06-05 16:47:06,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:06,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071385809] [2021-06-05 16:47:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:07,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:07,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071385809] [2021-06-05 16:47:07,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071385809] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:07,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715032884] [2021-06-05 16:47:07,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:47:07,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:07,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715032884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:07,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:07,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-05 16:47:07,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242514295] [2021-06-05 16:47:07,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 16:47:07,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:07,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 16:47:07,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 16:47:07,118 INFO L87 Difference]: Start difference. First operand 45797 states and 177178 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:07,663 INFO L93 Difference]: Finished difference Result 56721 states and 216081 transitions. [2021-06-05 16:47:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:47:07,664 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:08,047 INFO L225 Difference]: With dead ends: 56721 [2021-06-05 16:47:08,047 INFO L226 Difference]: Without dead ends: 56631 [2021-06-05 16:47:08,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 241.9ms TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 16:47:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56631 states. [2021-06-05 16:47:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56631 to 45626. [2021-06-05 16:47:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45626 states, 45625 states have (on average 3.866717808219178) internal successors, (176419), 45625 states have internal predecessors, (176419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45626 states to 45626 states and 176419 transitions. [2021-06-05 16:47:09,254 INFO L78 Accepts]: Start accepts. Automaton has 45626 states and 176419 transitions. Word has length 28 [2021-06-05 16:47:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:09,254 INFO L482 AbstractCegarLoop]: Abstraction has 45626 states and 176419 transitions. [2021-06-05 16:47:09,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 45626 states and 176419 transitions. [2021-06-05 16:47:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:09,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:09,328 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:09,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4190,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:09,529 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:09,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1414052632, now seen corresponding path program 80 times [2021-06-05 16:47:09,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:09,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871934627] [2021-06-05 16:47:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:47:09,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:09,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871934627] [2021-06-05 16:47:09,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871934627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:09,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261445806] [2021-06-05 16:47:09,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:09,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:47:09,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:09,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:47:09,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 16:47:09,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261445806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:09,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:09,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 16:47:09,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328051592] [2021-06-05 16:47:09,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 16:47:09,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:09,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 16:47:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 16:47:09,623 INFO L87 Difference]: Start difference. First operand 45626 states and 176419 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:10,080 INFO L93 Difference]: Finished difference Result 50119 states and 191428 transitions. [2021-06-05 16:47:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:47:10,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:10,219 INFO L225 Difference]: With dead ends: 50119 [2021-06-05 16:47:10,220 INFO L226 Difference]: Without dead ends: 50107 [2021-06-05 16:47:10,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:47:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50107 states. [2021-06-05 16:47:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50107 to 45780. [2021-06-05 16:47:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45780 states, 45779 states have (on average 3.864523034579174) internal successors, (176914), 45779 states have internal predecessors, (176914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45780 states to 45780 states and 176914 transitions. [2021-06-05 16:47:11,395 INFO L78 Accepts]: Start accepts. Automaton has 45780 states and 176914 transitions. Word has length 28 [2021-06-05 16:47:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:11,396 INFO L482 AbstractCegarLoop]: Abstraction has 45780 states and 176914 transitions. [2021-06-05 16:47:11,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 45780 states and 176914 transitions. [2021-06-05 16:47:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:11,470 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:11,470 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:11,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4191,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:11,684 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:11,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash 421559068, now seen corresponding path program 81 times [2021-06-05 16:47:11,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:11,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805385423] [2021-06-05 16:47:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:11,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:11,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805385423] [2021-06-05 16:47:11,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805385423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:11,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647161266] [2021-06-05 16:47:11,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:11,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:47:11,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:11,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 16:47:11,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:11,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647161266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:11,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:11,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 16:47:11,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262057651] [2021-06-05 16:47:11,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 16:47:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 16:47:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 16:47:11,789 INFO L87 Difference]: Start difference. First operand 45780 states and 176914 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:12,510 INFO L93 Difference]: Finished difference Result 50083 states and 191344 transitions. [2021-06-05 16:47:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 16:47:12,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:12,640 INFO L225 Difference]: With dead ends: 50083 [2021-06-05 16:47:12,641 INFO L226 Difference]: Without dead ends: 50063 [2021-06-05 16:47:12,641 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-05 16:47:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50063 states. [2021-06-05 16:47:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50063 to 45780. [2021-06-05 16:47:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45780 states, 45779 states have (on average 3.8644356582712596) internal successors, (176910), 45779 states have internal predecessors, (176910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45780 states to 45780 states and 176910 transitions. [2021-06-05 16:47:13,789 INFO L78 Accepts]: Start accepts. Automaton has 45780 states and 176910 transitions. Word has length 28 [2021-06-05 16:47:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:13,789 INFO L482 AbstractCegarLoop]: Abstraction has 45780 states and 176910 transitions. [2021-06-05 16:47:13,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 45780 states and 176910 transitions. [2021-06-05 16:47:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:13,856 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:13,856 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:14,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4192 [2021-06-05 16:47:14,057 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:14,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:14,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1989119940, now seen corresponding path program 168 times [2021-06-05 16:47:14,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:14,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856881628] [2021-06-05 16:47:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:14,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:14,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856881628] [2021-06-05 16:47:14,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856881628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:14,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466116432] [2021-06-05 16:47:14,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:14,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 16:47:14,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:14,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:47:14,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:14,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466116432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:14,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:14,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:47:14,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375633249] [2021-06-05 16:47:14,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:47:14,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:14,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:47:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:47:14,166 INFO L87 Difference]: Start difference. First operand 45780 states and 176910 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:14,614 INFO L93 Difference]: Finished difference Result 50741 states and 194475 transitions. [2021-06-05 16:47:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 16:47:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:14,748 INFO L225 Difference]: With dead ends: 50741 [2021-06-05 16:47:14,748 INFO L226 Difference]: Without dead ends: 50728 [2021-06-05 16:47:14,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 16:47:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50728 states. [2021-06-05 16:47:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50728 to 48513. [2021-06-05 16:47:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48513 states, 48512 states have (on average 3.873330310026385) internal successors, (187903), 48512 states have internal predecessors, (187903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48513 states to 48513 states and 187903 transitions. [2021-06-05 16:47:15,979 INFO L78 Accepts]: Start accepts. Automaton has 48513 states and 187903 transitions. Word has length 28 [2021-06-05 16:47:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:15,980 INFO L482 AbstractCegarLoop]: Abstraction has 48513 states and 187903 transitions. [2021-06-05 16:47:15,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 48513 states and 187903 transitions. [2021-06-05 16:47:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:16,053 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:16,053 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] Forcibly destroying the process [2021-06-05 16:47:16,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4193 [2021-06-05 16:47:16,282 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1306375610, now seen corresponding path program 169 times [2021-06-05 16:47:16,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:16,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409393458] [2021-06-05 16:47:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] The stream was forcibly closed: stdIn [2021-06-05 16:47:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:16,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:16,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409393458] [2021-06-05 16:47:16,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409393458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:16,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213564133] [2021-06-05 16:47:16,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:16,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:47:16,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:16,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213564133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:16,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:16,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:47:16,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859167574] [2021-06-05 16:47:16,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:47:16,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:47:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:47:16,410 INFO L87 Difference]: Start difference. First operand 48513 states and 187903 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:16,896 INFO L93 Difference]: Finished difference Result 54090 states and 205931 transitions. [2021-06-05 16:47:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 16:47:16,896 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:17,038 INFO L225 Difference]: With dead ends: 54090 [2021-06-05 16:47:17,038 INFO L226 Difference]: Without dead ends: 54090 [2021-06-05 16:47:17,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 145.1ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-05 16:47:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54090 states. [2021-06-05 16:47:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54090 to 43050. [2021-06-05 16:47:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43050 states, 43049 states have (on average 3.8601593532950824) internal successors, (166176), 43049 states have internal predecessors, (166176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43050 states to 43050 states and 166176 transitions. [2021-06-05 16:47:18,205 INFO L78 Accepts]: Start accepts. Automaton has 43050 states and 166176 transitions. Word has length 28 [2021-06-05 16:47:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:18,205 INFO L482 AbstractCegarLoop]: Abstraction has 43050 states and 166176 transitions. [2021-06-05 16:47:18,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 43050 states and 166176 transitions. [2021-06-05 16:47:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:18,273 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:18,273 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:18,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4194 [2021-06-05 16:47:18,473 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:18,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:18,473 INFO L82 PathProgramCache]: Analyzing trace with hash 986257146, now seen corresponding path program 170 times [2021-06-05 16:47:18,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:18,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974545781] [2021-06-05 16:47:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:18,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:18,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974545781] [2021-06-05 16:47:18,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974545781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:18,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461553207] [2021-06-05 16:47:18,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:18,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:47:18,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:18,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:47:18,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:18,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461553207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:18,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:18,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 16:47:18,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558537325] [2021-06-05 16:47:18,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:47:18,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:18,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:47:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:47:18,589 INFO L87 Difference]: Start difference. First operand 43050 states and 166176 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:19,106 INFO L93 Difference]: Finished difference Result 47933 states and 182630 transitions. [2021-06-05 16:47:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 16:47:19,107 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:19,224 INFO L225 Difference]: With dead ends: 47933 [2021-06-05 16:47:19,225 INFO L226 Difference]: Without dead ends: 47933 [2021-06-05 16:47:19,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 195.8ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-05 16:47:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47933 states. [2021-06-05 16:47:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47933 to 43883. [2021-06-05 16:47:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43883 states, 43882 states have (on average 3.858848730686842) internal successors, (169334), 43882 states have internal predecessors, (169334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43883 states to 43883 states and 169334 transitions. [2021-06-05 16:47:20,243 INFO L78 Accepts]: Start accepts. Automaton has 43883 states and 169334 transitions. Word has length 28 [2021-06-05 16:47:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:20,243 INFO L482 AbstractCegarLoop]: Abstraction has 43883 states and 169334 transitions. [2021-06-05 16:47:20,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 43883 states and 169334 transitions. [2021-06-05 16:47:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:20,540 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:20,540 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:20,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4195 [2021-06-05 16:47:20,740 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:20,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:20,741 INFO L82 PathProgramCache]: Analyzing trace with hash -22913030, now seen corresponding path program 171 times [2021-06-05 16:47:20,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:20,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557207880] [2021-06-05 16:47:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:20,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:20,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557207880] [2021-06-05 16:47:20,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557207880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:20,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751431254] [2021-06-05 16:47:20,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:20,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:47:20,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:20,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:47:20,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:20,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751431254] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:20,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:20,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 16:47:20,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363695450] [2021-06-05 16:47:20,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 16:47:20,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:20,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 16:47:20,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 16:47:20,857 INFO L87 Difference]: Start difference. First operand 43883 states and 169334 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:21,287 INFO L93 Difference]: Finished difference Result 45643 states and 175210 transitions. [2021-06-05 16:47:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 16:47:21,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:21,398 INFO L225 Difference]: With dead ends: 45643 [2021-06-05 16:47:21,398 INFO L226 Difference]: Without dead ends: 45643 [2021-06-05 16:47:21,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-06-05 16:47:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45643 states. [2021-06-05 16:47:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45643 to 43891. [2021-06-05 16:47:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43891 states, 43890 states have (on average 3.8586921850079743) internal successors, (169358), 43890 states have internal predecessors, (169358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43891 states to 43891 states and 169358 transitions. [2021-06-05 16:47:22,386 INFO L78 Accepts]: Start accepts. Automaton has 43891 states and 169358 transitions. Word has length 28 [2021-06-05 16:47:22,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:22,386 INFO L482 AbstractCegarLoop]: Abstraction has 43891 states and 169358 transitions. [2021-06-05 16:47:22,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 43891 states and 169358 transitions. [2021-06-05 16:47:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 16:47:22,456 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:22,456 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:22,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4196 [2021-06-05 16:47:22,656 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash -120181494, now seen corresponding path program 172 times [2021-06-05 16:47:22,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:22,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59610172] [2021-06-05 16:47:22,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:22,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:22,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59610172] [2021-06-05 16:47:22,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59610172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:22,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039566447] [2021-06-05 16:47:22,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:22,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:47:22,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:22,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 16:47:22,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:22,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039566447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:22,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:22,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 16:47:22,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647855929] [2021-06-05 16:47:22,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 16:47:22,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:22,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 16:47:22,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 16:47:22,775 INFO L87 Difference]: Start difference. First operand 43891 states and 169358 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:23,187 INFO L93 Difference]: Finished difference Result 45363 states and 174288 transitions. [2021-06-05 16:47:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 16:47:23,188 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 16:47:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:23,302 INFO L225 Difference]: With dead ends: 45363 [2021-06-05 16:47:23,302 INFO L226 Difference]: Without dead ends: 45363 [2021-06-05 16:47:23,303 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 16:47:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45363 states. [2021-06-05 16:47:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45363 to 43785. [2021-06-05 16:47:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43785 states, 43784 states have (on average 3.858350082221816) internal successors, (168934), 43784 states have internal predecessors, (168934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43785 states to 43785 states and 168934 transitions. [2021-06-05 16:47:24,355 INFO L78 Accepts]: Start accepts. Automaton has 43785 states and 168934 transitions. Word has length 28 [2021-06-05 16:47:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:24,355 INFO L482 AbstractCegarLoop]: Abstraction has 43785 states and 168934 transitions. [2021-06-05 16:47:24,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 43785 states and 168934 transitions. [2021-06-05 16:47:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:47:24,426 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:24,427 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:24,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4197,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:24,633 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:24,633 INFO L82 PathProgramCache]: Analyzing trace with hash -915745990, now seen corresponding path program 173 times [2021-06-05 16:47:24,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:24,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371177586] [2021-06-05 16:47:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:25,142 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 56 [2021-06-05 16:47:25,298 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-06-05 16:47:25,434 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-06-05 16:47:25,587 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-05 16:47:25,728 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2021-06-05 16:47:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:25,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:25,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371177586] [2021-06-05 16:47:25,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371177586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:25,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343165778] [2021-06-05 16:47:25,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:25,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:47:25,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:25,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 16:47:25,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:26,157 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-05 16:47:26,382 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 16:47:26,880 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2021-06-05 16:47:27,174 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 16:47:27,372 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 16:47:27,656 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 16:47:27,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:47:27,843 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:27,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:27,856 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:27,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:27,870 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:27,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:47:27,884 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:27,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:47:27,897 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:27,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:27,912 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:47:27,926 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:27,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:27,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:27,936 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,277 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 113 [2021-06-05 16:47:28,277 INFO L628 ElimStorePlain]: treesize reduction 98, result has 81.7 percent of original size [2021-06-05 16:47:28,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:28,290 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:47:28,302 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:47:28,313 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:28,324 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 16:47:28,335 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:28,346 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:28,356 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:28,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:47:28,364 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:28,468 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 16:47:28,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:28,474 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 2 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 16:47:28,475 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 20 variables, input treesize:725, output treesize:97 [2021-06-05 16:47:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:28,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343165778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:28,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:28,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-05 16:47:28,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855694717] [2021-06-05 16:47:28,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 16:47:28,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 16:47:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-06-05 16:47:28,567 INFO L87 Difference]: Start difference. First operand 43785 states and 168934 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:29,281 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2021-06-05 16:47:29,924 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 92 [2021-06-05 16:47:30,142 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2021-06-05 16:47:30,308 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-06-05 16:47:30,495 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2021-06-05 16:47:30,668 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-06-05 16:47:31,187 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2021-06-05 16:47:31,510 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 94 [2021-06-05 16:47:32,505 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 133 [2021-06-05 16:47:33,066 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-06-05 16:47:33,219 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 16:47:34,328 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 117 [2021-06-05 16:47:35,077 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 136 [2021-06-05 16:47:35,692 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 112 [2021-06-05 16:47:36,337 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 138 [2021-06-05 16:47:37,107 WARN L205 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 136 [2021-06-05 16:47:37,302 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-06-05 16:47:38,035 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 144 [2021-06-05 16:47:38,306 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2021-06-05 16:47:39,080 WARN L205 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 142 [2021-06-05 16:47:39,405 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2021-06-05 16:47:39,752 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-06-05 16:47:39,973 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-06-05 16:47:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:47:40,465 INFO L93 Difference]: Finished difference Result 51109 states and 190238 transitions. [2021-06-05 16:47:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 16:47:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:47:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:47:40,602 INFO L225 Difference]: With dead ends: 51109 [2021-06-05 16:47:40,602 INFO L226 Difference]: Without dead ends: 51049 [2021-06-05 16:47:40,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 12977.3ms TimeCoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 16:47:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51049 states. [2021-06-05 16:47:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51049 to 43920. [2021-06-05 16:47:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43920 states, 43919 states have (on average 3.8575331860925797) internal successors, (169419), 43919 states have internal predecessors, (169419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43920 states to 43920 states and 169419 transitions. [2021-06-05 16:47:41,641 INFO L78 Accepts]: Start accepts. Automaton has 43920 states and 169419 transitions. Word has length 30 [2021-06-05 16:47:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:47:41,641 INFO L482 AbstractCegarLoop]: Abstraction has 43920 states and 169419 transitions. [2021-06-05 16:47:41,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 43920 states and 169419 transitions. [2021-06-05 16:47:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:47:41,712 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:47:41,713 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:47:41,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4198 [2021-06-05 16:47:41,913 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:47:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:47:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1350823290, now seen corresponding path program 174 times [2021-06-05 16:47:41,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:47:41,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231779924] [2021-06-05 16:47:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:47:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:47:42,274 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-06-05 16:47:42,420 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-06-05 16:47:42,534 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-06-05 16:47:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:42,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:47:42,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231779924] [2021-06-05 16:47:42,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231779924] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:42,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139170359] [2021-06-05 16:47:42,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:47:42,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:47:42,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:47:42,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 16:47:42,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:47:43,290 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 16:47:43,574 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 16:47:43,785 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-06-05 16:47:44,366 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 134 [2021-06-05 16:47:44,635 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 16:47:45,580 WARN L205 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 181 [2021-06-05 16:47:45,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:45,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:45,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:45,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:45,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 16:47:45,833 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:45,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:45,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:45,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:45,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:47:45,851 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:46,680 WARN L205 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 217 [2021-06-05 16:47:46,681 INFO L628 ElimStorePlain]: treesize reduction 665, result has 42.2 percent of original size [2021-06-05 16:47:46,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:46,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:47:46,694 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:46,896 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-06-05 16:47:46,896 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:46,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:46,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:47:46,911 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:47,106 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-06-05 16:47:47,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:47,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:47,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:47,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-06-05 16:47:47,135 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:47,313 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-06-05 16:47:47,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:47,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:47,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:47,327 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:47,503 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2021-06-05 16:47:47,503 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:47,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:47,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:47,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 16:47:47,516 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:47,677 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-06-05 16:47:47,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:47,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:47:47,689 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:47,842 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-06-05 16:47:47,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:47,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:47,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:47,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:47,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:47:47,855 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:47,993 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 16:47:47,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:48,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:48,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:48,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:47:48,006 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:48,134 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 16:47:48,134 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:48,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 16:47:48,144 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:48,266 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 16:47:48,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:48,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:47:48,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:47:48,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:47:48,278 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:47:48,416 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 16:47:48,416 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:47:48,423 INFO L550 ElimStorePlain]: Start of recursive call 1: 33 dim-0 vars, 11 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 16:47:48,423 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 44 variables, input treesize:1231, output treesize:100 [2021-06-05 16:47:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:47:48,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139170359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:47:48,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:47:48,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 16:47:48,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783540682] [2021-06-05 16:47:48,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 16:47:48,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:47:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 16:47:48,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-06-05 16:47:48,523 INFO L87 Difference]: Start difference. First operand 43920 states and 169419 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:47:48,969 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 52 [2021-06-05 16:47:49,305 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2021-06-05 16:47:49,452 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-06-05 16:47:50,466 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-06-05 16:47:50,967 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2021-06-05 16:47:51,214 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2021-06-05 16:47:51,529 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2021-06-05 16:47:52,883 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2021-06-05 16:47:53,908 WARN L205 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 148 [2021-06-05 16:47:54,122 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2021-06-05 16:47:54,312 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-05 16:47:56,223 WARN L205 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2021-06-05 16:47:56,700 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 146 [2021-06-05 16:47:57,255 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 147 [2021-06-05 16:47:57,634 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 72 [2021-06-05 16:47:58,028 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-06-05 16:47:59,775 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 251 DAG size of output: 213 [2021-06-05 16:47:59,986 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 66 [2021-06-05 16:48:00,150 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2021-06-05 16:48:00,508 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 63 [2021-06-05 16:48:00,765 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 56 [2021-06-05 16:48:01,088 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-06-05 16:48:01,344 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 50 [2021-06-05 16:48:01,884 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 61 [2021-06-05 16:48:02,294 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2021-06-05 16:48:02,808 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2021-06-05 16:48:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:48:02,931 INFO L93 Difference]: Finished difference Result 51275 states and 190720 transitions. [2021-06-05 16:48:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 16:48:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:48:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:48:03,059 INFO L225 Difference]: With dead ends: 51275 [2021-06-05 16:48:03,060 INFO L226 Difference]: Without dead ends: 51176 [2021-06-05 16:48:03,060 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 15744.6ms TimeCoverageRelationStatistics Valid=600, Invalid=2706, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 16:48:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51176 states. [2021-06-05 16:48:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51176 to 43931. [2021-06-05 16:48:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43931 states, 43930 states have (on average 3.857546096061917) internal successors, (169462), 43930 states have internal predecessors, (169462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43931 states to 43931 states and 169462 transitions. [2021-06-05 16:48:04,049 INFO L78 Accepts]: Start accepts. Automaton has 43931 states and 169462 transitions. Word has length 30 [2021-06-05 16:48:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:48:04,049 INFO L482 AbstractCegarLoop]: Abstraction has 43931 states and 169462 transitions. [2021-06-05 16:48:04,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:04,049 INFO L276 IsEmpty]: Start isEmpty. Operand 43931 states and 169462 transitions. [2021-06-05 16:48:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:48:04,248 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:48:04,248 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:48:04,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4221,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:48:04,449 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:48:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:48:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1352714698, now seen corresponding path program 175 times [2021-06-05 16:48:04,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:48:04,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137992073] [2021-06-05 16:48:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:48:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:48:04,660 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 54 [2021-06-05 16:48:04,886 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2021-06-05 16:48:05,152 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-05 16:48:05,337 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 117 [2021-06-05 16:48:05,722 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54 [2021-06-05 16:48:06,057 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 158 [2021-06-05 16:48:06,608 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 76 [2021-06-05 16:48:06,812 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-06-05 16:48:06,992 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-06-05 16:48:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:48:07,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:48:07,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137992073] [2021-06-05 16:48:07,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137992073] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:48:07,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198383181] [2021-06-05 16:48:07,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:48:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:48:07,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 16:48:07,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:48:08,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:48:08,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 16:48:08,340 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 16:48:08,353 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 16:48:08,366 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 16:48:08,379 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 16:48:08,392 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 16:48:08,405 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:08,418 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 16:48:08,432 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 16:48:08,445 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:48:08,458 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:48:08,472 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:08,485 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:48:08,499 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 16:48:08,514 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,528 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,542 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,556 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 16:48:08,572 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:48:08,586 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 16:48:08,600 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,614 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:08,628 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 16:48:08,642 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:08,655 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:48:08,670 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 16:48:08,684 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 16:48:08,699 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 16:48:08,713 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:48:08,726 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,741 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:48:08,755 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:48:08,770 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,784 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:48:08,799 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,814 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:08,828 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 16:48:08,842 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:48:08,857 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 16:48:08,872 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:08,886 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 16:48:08,917 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:08,934 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 16:48:08,951 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:48:08,968 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:48:08,984 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:08,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:08,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:08,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:08,999 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:09,016 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 16:48:09,033 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:48:09,049 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 16:48:09,064 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 25 [2021-06-05 16:48:09,079 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 16:48:09,093 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:48:09,108 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 16:48:09,122 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 16:48:09,136 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 16:48:09,149 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:48:09,163 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:48:09,177 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:48:09,190 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 16:48:09,203 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:48:09,215 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:09,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:48:09,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:48:09,222 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:09,313 INFO L628 ElimStorePlain]: treesize reduction 206, result has 26.7 percent of original size [2021-06-05 16:48:09,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:48:09,314 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 16:48:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:48:09,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198383181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:48:09,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:48:09,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 16:48:09,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315041828] [2021-06-05 16:48:09,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 16:48:09,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:48:09,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 16:48:09,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-06-05 16:48:09,373 INFO L87 Difference]: Start difference. First operand 43931 states and 169462 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:09,958 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 70 [2021-06-05 16:48:10,339 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 71 [2021-06-05 16:48:10,736 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 68 [2021-06-05 16:48:11,160 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2021-06-05 16:48:11,545 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 94 [2021-06-05 16:48:11,791 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 82 [2021-06-05 16:48:11,949 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 16:48:12,156 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 74 [2021-06-05 16:48:12,629 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 69 [2021-06-05 16:48:13,047 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2021-06-05 16:48:13,217 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2021-06-05 16:48:13,576 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 80 [2021-06-05 16:48:13,825 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 85 [2021-06-05 16:48:13,996 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2021-06-05 16:48:14,339 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 72 [2021-06-05 16:48:14,541 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 75 [2021-06-05 16:48:14,775 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 77 [2021-06-05 16:48:15,314 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2021-06-05 16:48:15,703 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-06-05 16:48:15,953 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2021-06-05 16:48:16,124 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-05 16:48:16,303 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 16:48:16,603 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 73 [2021-06-05 16:48:16,809 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2021-06-05 16:48:17,034 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 78 [2021-06-05 16:48:17,540 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2021-06-05 16:48:17,806 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-06-05 16:48:18,042 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2021-06-05 16:48:18,383 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-06-05 16:48:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:48:18,712 INFO L93 Difference]: Finished difference Result 55765 states and 208985 transitions. [2021-06-05 16:48:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 16:48:18,713 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:48:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:48:18,874 INFO L225 Difference]: With dead ends: 55765 [2021-06-05 16:48:18,874 INFO L226 Difference]: Without dead ends: 55735 [2021-06-05 16:48:18,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 10143.9ms TimeCoverageRelationStatistics Valid=534, Invalid=3126, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 16:48:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55735 states. [2021-06-05 16:48:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55735 to 43970. [2021-06-05 16:48:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43970 states, 43969 states have (on average 3.8572630717096135) internal successors, (169600), 43969 states have internal predecessors, (169600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43970 states to 43970 states and 169600 transitions. [2021-06-05 16:48:20,028 INFO L78 Accepts]: Start accepts. Automaton has 43970 states and 169600 transitions. Word has length 30 [2021-06-05 16:48:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:48:20,029 INFO L482 AbstractCegarLoop]: Abstraction has 43970 states and 169600 transitions. [2021-06-05 16:48:20,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 43970 states and 169600 transitions. [2021-06-05 16:48:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:48:20,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:48:20,101 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:48:20,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4274 [2021-06-05 16:48:20,302 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:48:20,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:48:20,303 INFO L82 PathProgramCache]: Analyzing trace with hash -547667522, now seen corresponding path program 176 times [2021-06-05 16:48:20,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:48:20,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53674559] [2021-06-05 16:48:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:48:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:48:20,523 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 16:48:20,718 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 16:48:20,892 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-06-05 16:48:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:48:21,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:48:21,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53674559] [2021-06-05 16:48:21,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53674559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:48:21,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30146122] [2021-06-05 16:48:21,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:48:21,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 16:48:21,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:48:21,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 16:48:21,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:48:21,510 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 16:48:21,724 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 16:48:22,229 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-05 16:48:22,746 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 16:48:23,134 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 16:48:23,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 54 [2021-06-05 16:48:23,137 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:23,734 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2021-06-05 16:48:23,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:23,790 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-05 16:48:23,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-05 16:48:23,792 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:24,196 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2021-06-05 16:48:24,196 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:24,258 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 16:48:24,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 16:48:24,269 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:25,082 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 337 [2021-06-05 16:48:25,082 INFO L628 ElimStorePlain]: treesize reduction 29, result has 96.7 percent of original size [2021-06-05 16:48:25,151 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 16:48:25,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 16:48:25,168 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:25,945 WARN L205 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 329 [2021-06-05 16:48:25,945 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.9 percent of original size [2021-06-05 16:48:25,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:25,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2021-06-05 16:48:26,008 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:26,389 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2021-06-05 16:48:26,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:26,448 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 16:48:26,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 16:48:26,454 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:26,832 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2021-06-05 16:48:26,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:26,896 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 16:48:26,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 16:48:26,900 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:27,288 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2021-06-05 16:48:27,288 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:27,354 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 16:48:27,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2021-06-05 16:48:27,369 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:28,111 WARN L205 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 305 [2021-06-05 16:48:28,112 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.8 percent of original size [2021-06-05 16:48:28,180 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 16:48:28,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 58 [2021-06-05 16:48:28,189 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:28,929 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 302 [2021-06-05 16:48:28,930 INFO L628 ElimStorePlain]: treesize reduction 24, result has 96.9 percent of original size [2021-06-05 16:48:28,979 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:28,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 62 [2021-06-05 16:48:28,990 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:29,756 WARN L205 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 301 [2021-06-05 16:48:29,757 INFO L628 ElimStorePlain]: treesize reduction 44, result has 94.5 percent of original size [2021-06-05 16:48:29,813 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 16:48:29,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 16:48:29,817 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:30,188 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-05 16:48:30,188 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:30,245 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 16:48:30,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 50 [2021-06-05 16:48:30,247 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:30,705 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-05 16:48:30,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:30,749 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:30,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 62 [2021-06-05 16:48:30,761 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:31,503 WARN L205 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 294 [2021-06-05 16:48:31,504 INFO L628 ElimStorePlain]: treesize reduction 25, result has 96.7 percent of original size [2021-06-05 16:48:31,558 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 16:48:31,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 54 [2021-06-05 16:48:31,561 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:31,922 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2021-06-05 16:48:31,923 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:31,969 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 16:48:31,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 43 [2021-06-05 16:48:31,971 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:32,342 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2021-06-05 16:48:32,342 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:32,392 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 16:48:32,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 16:48:32,396 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:32,760 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2021-06-05 16:48:32,760 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:48:32,867 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-06-05 16:48:32,868 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 48 variables, input treesize:877, output treesize:1290 [2021-06-05 16:48:33,264 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-06-05 16:48:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:48:33,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30146122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:48:33,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:48:33,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-05 16:48:33,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57319930] [2021-06-05 16:48:33,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 16:48:33,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:48:33,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 16:48:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-06-05 16:48:33,402 INFO L87 Difference]: Start difference. First operand 43970 states and 169600 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:33,915 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2021-06-05 16:48:34,214 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 90 [2021-06-05 16:48:34,701 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-06-05 16:48:35,219 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-06-05 16:48:35,529 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 69 [2021-06-05 16:48:35,934 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 90 [2021-06-05 16:48:36,202 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-06-05 16:48:36,751 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2021-06-05 16:48:37,084 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 69 [2021-06-05 16:48:37,239 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-06-05 16:48:37,471 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-06-05 16:48:37,631 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-06-05 16:48:38,364 WARN L205 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 164 [2021-06-05 16:48:39,196 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 93 [2021-06-05 16:48:39,473 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-06-05 16:48:39,652 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-06-05 16:48:39,875 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-06-05 16:48:40,889 WARN L205 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 151 [2021-06-05 16:48:41,083 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2021-06-05 16:48:41,388 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2021-06-05 16:48:42,448 WARN L205 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 156 [2021-06-05 16:48:42,722 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 64 [2021-06-05 16:48:44,054 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 235 DAG size of output: 160 [2021-06-05 16:48:45,108 WARN L205 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 147 [2021-06-05 16:48:45,943 WARN L205 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 127 [2021-06-05 16:48:46,218 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2021-06-05 16:48:47,558 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2021-06-05 16:48:48,321 WARN L205 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 119 [2021-06-05 16:48:48,916 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 117 [2021-06-05 16:48:50,012 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 209 DAG size of output: 176 [2021-06-05 16:48:50,256 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 16:48:50,485 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2021-06-05 16:48:51,117 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 115 [2021-06-05 16:48:51,452 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 75 [2021-06-05 16:48:51,729 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2021-06-05 16:48:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:48:51,922 INFO L93 Difference]: Finished difference Result 53172 states and 196612 transitions. [2021-06-05 16:48:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 16:48:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:48:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:48:52,059 INFO L225 Difference]: With dead ends: 53172 [2021-06-05 16:48:52,059 INFO L226 Difference]: Without dead ends: 53142 [2021-06-05 16:48:52,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 19238.5ms TimeCoverageRelationStatistics Valid=681, Invalid=3875, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 16:48:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53142 states. [2021-06-05 16:48:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53142 to 43998. [2021-06-05 16:48:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43998 states, 43997 states have (on average 3.8568766052230834) internal successors, (169691), 43997 states have internal predecessors, (169691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43998 states to 43998 states and 169691 transitions. [2021-06-05 16:48:53,092 INFO L78 Accepts]: Start accepts. Automaton has 43998 states and 169691 transitions. Word has length 30 [2021-06-05 16:48:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:48:53,092 INFO L482 AbstractCegarLoop]: Abstraction has 43998 states and 169691 transitions. [2021-06-05 16:48:53,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:48:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 43998 states and 169691 transitions. [2021-06-05 16:48:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:48:53,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:48:53,165 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:48:53,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4505,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:48:53,366 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:48:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:48:53,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1002714042, now seen corresponding path program 177 times [2021-06-05 16:48:53,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:48:53,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086953495] [2021-06-05 16:48:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:48:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:48:53,590 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2021-06-05 16:48:53,910 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-06-05 16:48:54,097 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-05 16:48:54,267 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 16:48:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:48:54,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:48:54,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086953495] [2021-06-05 16:48:54,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086953495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:48:54,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905671510] [2021-06-05 16:48:54,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:48:54,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 16:48:54,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:48:54,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 16:48:54,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:48:54,839 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 16:48:55,060 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 16:48:55,366 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 16:48:55,866 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-05 16:48:56,324 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 16:48:56,852 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 191 [2021-06-05 16:48:57,379 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2021-06-05 16:48:57,796 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_635, v_prenex_636, v_prenex_637, v_prenex_642], 9=[A, v_prenex_638, v_prenex_639, v_prenex_640, v_prenex_641, v_prenex_634]} [2021-06-05 16:48:57,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:57,865 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-05 16:48:57,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 64 [2021-06-05 16:48:57,873 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:57,935 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-05 16:48:57,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 61 [2021-06-05 16:48:57,953 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:59,438 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 255 DAG size of output: 243 [2021-06-05 16:48:59,439 INFO L628 ElimStorePlain]: treesize reduction 59, result has 95.2 percent of original size [2021-06-05 16:48:59,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:59,506 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 16:48:59,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-06-05 16:48:59,508 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:48:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:48:59,568 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:48:59,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 50 [2021-06-05 16:48:59,573 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:00,353 WARN L205 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2021-06-05 16:49:00,353 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:00,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:00,418 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:00,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 50 [2021-06-05 16:49:00,427 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:00,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:00,475 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:00,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 59 [2021-06-05 16:49:00,499 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:01,211 WARN L205 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-06-05 16:49:01,211 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:01,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:01,277 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 16:49:01,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-06-05 16:49:01,281 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:01,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:01,345 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:01,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 56 [2021-06-05 16:49:01,347 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:02,047 WARN L205 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2021-06-05 16:49:02,047 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:02,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:02,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:02,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:02,116 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 16:49:02,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 52 [2021-06-05 16:49:02,118 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:02,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:02,182 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:02,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 56 [2021-06-05 16:49:02,185 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:03,541 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 237 DAG size of output: 236 [2021-06-05 16:49:03,541 INFO L628 ElimStorePlain]: treesize reduction 11, result has 99.0 percent of original size [2021-06-05 16:49:03,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:03,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:03,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:03,613 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:03,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 53 [2021-06-05 16:49:03,619 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:03,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:03,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:03,676 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 16:49:03,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 49 [2021-06-05 16:49:03,678 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:05,036 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 235 DAG size of output: 234 [2021-06-05 16:49:05,037 INFO L628 ElimStorePlain]: treesize reduction 11, result has 99.0 percent of original size [2021-06-05 16:49:05,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:05,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:05,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:05,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:05,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 68 [2021-06-05 16:49:05,115 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:05,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:05,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:05,176 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:05,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-05 16:49:05,182 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:06,548 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 245 DAG size of output: 228 [2021-06-05 16:49:06,548 INFO L628 ElimStorePlain]: treesize reduction 108, result has 90.6 percent of original size [2021-06-05 16:49:06,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:06,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:06,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:06,614 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:06,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-05 16:49:06,616 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:06,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:06,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:06,672 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:06,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 56 [2021-06-05 16:49:06,676 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:07,972 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2021-06-05 16:49:07,972 INFO L628 ElimStorePlain]: treesize reduction 10, result has 99.0 percent of original size [2021-06-05 16:49:07,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:07,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:07,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:08,038 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:08,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-05 16:49:08,042 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:08,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:08,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:08,084 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:08,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 68 [2021-06-05 16:49:08,098 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:09,270 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 225 DAG size of output: 212 [2021-06-05 16:49:09,271 INFO L628 ElimStorePlain]: treesize reduction 65, result has 93.7 percent of original size [2021-06-05 16:49:09,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:09,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:09,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:09,329 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 16:49:09,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 53 [2021-06-05 16:49:09,335 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:09,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:09,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:09,376 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:09,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 65 [2021-06-05 16:49:09,399 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:10,542 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 214 DAG size of output: 201 [2021-06-05 16:49:10,542 INFO L628 ElimStorePlain]: treesize reduction 67, result has 93.2 percent of original size [2021-06-05 16:49:10,616 INFO L550 ElimStorePlain]: Start of recursive call 1: 20 dim-0 vars, 10 dim-1 vars, End of recursive call: and 20 xjuncts. [2021-06-05 16:49:10,616 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 30 variables, input treesize:1225, output treesize:1279 [2021-06-05 16:49:11,032 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2021-06-05 16:49:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:49:11,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905671510] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:49:11,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:49:11,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-05 16:49:11,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836702565] [2021-06-05 16:49:11,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 16:49:11,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:49:11,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 16:49:11,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-06-05 16:49:11,147 INFO L87 Difference]: Start difference. First operand 43998 states and 169691 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:49:11,810 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 39 [2021-06-05 16:49:12,399 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2021-06-05 16:49:13,022 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-06-05 16:49:13,216 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-05 16:49:14,212 WARN L205 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-06-05 16:49:14,968 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 84 [2021-06-05 16:49:15,241 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-05 16:49:16,087 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 92 [2021-06-05 16:49:16,936 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 140 [2021-06-05 16:49:17,149 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2021-06-05 16:49:17,302 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 58 [2021-06-05 16:49:17,586 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-06-05 16:49:18,756 WARN L205 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 113 [2021-06-05 16:49:18,968 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 16:49:19,816 WARN L205 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 99 [2021-06-05 16:49:20,188 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2021-06-05 16:49:21,157 WARN L205 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 140 [2021-06-05 16:49:22,249 WARN L205 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 161 [2021-06-05 16:49:22,567 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-06-05 16:49:23,405 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 96 [2021-06-05 16:49:24,383 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 144 [2021-06-05 16:49:25,025 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 97 [2021-06-05 16:49:25,483 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 114 [2021-06-05 16:49:25,797 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 16:49:26,939 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 145 [2021-06-05 16:49:27,953 WARN L205 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 144 [2021-06-05 16:49:28,607 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 129 [2021-06-05 16:49:28,920 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-06-05 16:49:29,409 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 118 [2021-06-05 16:49:30,415 WARN L205 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2021-06-05 16:49:31,270 WARN L205 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2021-06-05 16:49:32,607 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 169 DAG size of output: 157 [2021-06-05 16:49:33,206 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 220 [2021-06-05 16:49:34,768 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2021-06-05 16:49:35,371 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 201 [2021-06-05 16:49:36,089 WARN L205 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 220 [2021-06-05 16:49:36,478 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-06-05 16:49:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:49:36,730 INFO L93 Difference]: Finished difference Result 69247 states and 257198 transitions. [2021-06-05 16:49:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 16:49:36,731 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:49:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:49:36,941 INFO L225 Difference]: With dead ends: 69247 [2021-06-05 16:49:36,941 INFO L226 Difference]: Without dead ends: 69217 [2021-06-05 16:49:36,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 26104.7ms TimeCoverageRelationStatistics Valid=679, Invalid=5483, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 16:49:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69217 states. [2021-06-05 16:49:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69217 to 44010. [2021-06-05 16:49:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44010 states, 44009 states have (on average 3.856961076143516) internal successors, (169741), 44009 states have internal predecessors, (169741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:49:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44010 states to 44010 states and 169741 transitions. [2021-06-05 16:49:38,172 INFO L78 Accepts]: Start accepts. Automaton has 44010 states and 169741 transitions. Word has length 30 [2021-06-05 16:49:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:49:38,173 INFO L482 AbstractCegarLoop]: Abstraction has 44010 states and 169741 transitions. [2021-06-05 16:49:38,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:49:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 44010 states and 169741 transitions. [2021-06-05 16:49:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:49:38,245 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:49:38,245 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:49:38,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4642,259 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:49:38,445 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:49:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:49:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash 26395198, now seen corresponding path program 178 times [2021-06-05 16:49:38,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:49:38,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560127661] [2021-06-05 16:49:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:49:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:49:38,695 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 144 [2021-06-05 16:49:39,018 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 39 [2021-06-05 16:49:39,148 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 147 [2021-06-05 16:49:39,431 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 44 [2021-06-05 16:49:39,674 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 184 [2021-06-05 16:49:40,169 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 93 [2021-06-05 16:49:40,373 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 177 [2021-06-05 16:49:40,825 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 86 [2021-06-05 16:49:41,127 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 46 [2021-06-05 16:49:41,341 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2021-06-05 16:49:41,577 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2021-06-05 16:49:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:49:41,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:49:41,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560127661] [2021-06-05 16:49:41,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560127661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:49:41,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237051875] [2021-06-05 16:49:41,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:49:41,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 16:49:41,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:49:41,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 16:49:41,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:49:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 16:49:42,971 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:42,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:42,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:42,987 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:43,178 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 16:49:43,191 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 16:49:43,208 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:49:43,223 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:49:43,240 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:49:43,257 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 16:49:43,274 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:49:43,290 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 16:49:43,306 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:43,324 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 16:49:43,342 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:43,358 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:43,376 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 25 [2021-06-05 16:49:43,393 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 16:49:43,412 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 16:49:43,431 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:43,449 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 16:49:43,465 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:49:43,481 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:43,497 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:49:43,512 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:49:43,528 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 16:49:43,543 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 16:49:43,558 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 16:49:43,574 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:49:43,590 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:49:43,625 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 16:49:43,640 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:43,657 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 16:49:43,673 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 16:49:43,688 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:49:43,704 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 16:49:43,719 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:43,735 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:43,750 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 16:49:43,765 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:43,780 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 16:49:43,796 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 16:49:43,810 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:43,826 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 16:49:43,841 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 16:49:43,855 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:49:43,870 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:43,885 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:49:43,900 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:49:43,916 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:49:43,931 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 16:49:43,947 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:43,963 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 16:49:43,979 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:43,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:43,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:43,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:49:43,995 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 16:49:44,011 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:49:44,026 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 16:49:44,057 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:44,074 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:44,090 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:49:44,106 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:49:44,121 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:49:44,136 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:49:44,149 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:44,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:44,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 16:49:44,156 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:44,243 INFO L628 ElimStorePlain]: treesize reduction 187, result has 28.6 percent of original size [2021-06-05 16:49:44,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:49:44,245 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 16:49:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:49:44,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237051875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:49:44,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:49:44,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-05 16:49:44,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367071526] [2021-06-05 16:49:44,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 16:49:44,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:49:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 16:49:44,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-06-05 16:49:44,318 INFO L87 Difference]: Start difference. First operand 44010 states and 169741 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:49:44,493 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2021-06-05 16:49:44,756 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 45 [2021-06-05 16:49:45,176 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 45 [2021-06-05 16:49:45,322 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 41 [2021-06-05 16:49:45,989 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2021-06-05 16:49:46,536 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 81 [2021-06-05 16:49:46,787 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2021-06-05 16:49:47,006 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-05 16:49:47,160 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 16:49:47,345 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 16:49:47,787 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 110 [2021-06-05 16:49:47,946 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 45 [2021-06-05 16:49:48,363 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 83 [2021-06-05 16:49:48,997 WARN L205 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 94 [2021-06-05 16:49:49,488 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 70 [2021-06-05 16:49:50,052 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 113 [2021-06-05 16:49:50,365 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2021-06-05 16:49:50,974 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 97 [2021-06-05 16:49:51,213 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 16:49:51,524 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 65 [2021-06-05 16:49:51,749 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 16:49:51,960 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-06-05 16:49:52,307 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-06-05 16:49:52,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:49:52,951 INFO L93 Difference]: Finished difference Result 72447 states and 268328 transitions. [2021-06-05 16:49:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 16:49:52,951 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:49:52,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:49:53,142 INFO L225 Difference]: With dead ends: 72447 [2021-06-05 16:49:53,142 INFO L226 Difference]: Without dead ends: 72417 [2021-06-05 16:49:53,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 9839.1ms TimeCoverageRelationStatistics Valid=411, Invalid=3129, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 16:49:53,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72417 states. [2021-06-05 16:49:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72417 to 44039. [2021-06-05 16:49:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44039 states, 44038 states have (on average 3.856623824878514) internal successors, (169838), 44038 states have internal predecessors, (169838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:49:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44039 states to 44039 states and 169838 transitions. [2021-06-05 16:49:54,668 INFO L78 Accepts]: Start accepts. Automaton has 44039 states and 169838 transitions. Word has length 30 [2021-06-05 16:49:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:49:54,668 INFO L482 AbstractCegarLoop]: Abstraction has 44039 states and 169838 transitions. [2021-06-05 16:49:54,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:49:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 44039 states and 169838 transitions. [2021-06-05 16:49:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:49:54,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:49:54,746 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:49:54,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4830,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:49:54,957 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:49:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:49:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2016530042, now seen corresponding path program 179 times [2021-06-05 16:49:54,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:49:54,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223229223] [2021-06-05 16:49:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:49:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:49:55,271 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-05 16:49:55,472 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-06-05 16:49:55,659 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-06-05 16:49:55,804 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2021-06-05 16:49:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:49:56,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:49:56,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223229223] [2021-06-05 16:49:56,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223229223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:49:56,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059882998] [2021-06-05 16:49:56,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:49:56,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 16:49:56,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:49:56,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 16:49:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:49:56,424 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 16:49:56,642 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 16:49:57,169 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 16:49:58,268 WARN L205 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 168 [2021-06-05 16:49:59,044 WARN L205 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 116 [2021-06-05 16:49:59,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:59,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:49:59,136 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:59,564 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 155 [2021-06-05 16:49:59,564 INFO L628 ElimStorePlain]: treesize reduction 91, result has 81.8 percent of original size [2021-06-05 16:49:59,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:59,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:49:59,576 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:59,749 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 16:49:59,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:49:59,759 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:59,926 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 16:49:59,927 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:49:59,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:59,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:59,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:49:59,941 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:49:59,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:49:59,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:49:59,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 16:49:59,951 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:00,105 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-05 16:50:00,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:50:00,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:50:00,115 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:00,255 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 16:50:00,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:50:00,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 16:50:00,264 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:00,397 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 16:50:00,397 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:50:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:00,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:50:00,406 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:00,525 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 16:50:00,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:50:00,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:00,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:50:00,534 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:00,716 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 16:50:00,716 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:50:00,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:00,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:00,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 16:50:00,724 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:00,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 16:50:00,826 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 9 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 16:50:00,827 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 27 variables, input treesize:525, output treesize:100 [2021-06-05 16:50:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:50:00,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059882998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:50:00,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:50:00,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 16:50:00,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368688733] [2021-06-05 16:50:00,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 16:50:00,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:50:00,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 16:50:00,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-05 16:50:00,924 INFO L87 Difference]: Start difference. First operand 44039 states and 169838 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:50:01,302 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 52 [2021-06-05 16:50:01,663 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2021-06-05 16:50:01,803 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-06-05 16:50:02,077 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-05 16:50:02,399 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 66 [2021-06-05 16:50:02,752 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 63 [2021-06-05 16:50:03,069 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 68 [2021-06-05 16:50:03,358 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2021-06-05 16:50:03,536 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 16:50:03,803 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-06-05 16:50:04,462 WARN L205 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2021-06-05 16:50:05,048 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 89 [2021-06-05 16:50:05,427 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-06-05 16:50:05,666 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-05 16:50:07,248 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 163 DAG size of output: 142 [2021-06-05 16:50:08,583 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 175 DAG size of output: 141 [2021-06-05 16:50:08,751 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 16:50:09,511 WARN L205 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 95 [2021-06-05 16:50:11,450 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 179 DAG size of output: 125 [2021-06-05 16:50:13,262 WARN L205 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 167 DAG size of output: 141 [2021-06-05 16:50:13,661 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2021-06-05 16:50:13,938 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 62 [2021-06-05 16:50:14,361 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 16:50:15,349 WARN L205 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 121 [2021-06-05 16:50:16,580 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 171 DAG size of output: 121 [2021-06-05 16:50:16,820 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2021-06-05 16:50:17,176 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-06-05 16:50:17,536 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2021-06-05 16:50:18,461 WARN L205 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 145 [2021-06-05 16:50:18,773 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 51 [2021-06-05 16:50:19,030 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2021-06-05 16:50:19,302 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 61 [2021-06-05 16:50:19,600 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 56 [2021-06-05 16:50:19,880 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-06-05 16:50:20,083 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 45 [2021-06-05 16:50:20,358 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2021-06-05 16:50:20,565 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 45 [2021-06-05 16:50:20,748 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44 [2021-06-05 16:50:20,939 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2021-06-05 16:50:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:50:21,136 INFO L93 Difference]: Finished difference Result 54532 states and 200549 transitions. [2021-06-05 16:50:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 16:50:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:50:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:50:21,279 INFO L225 Difference]: With dead ends: 54532 [2021-06-05 16:50:21,279 INFO L226 Difference]: Without dead ends: 54358 [2021-06-05 16:50:21,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 22267.5ms TimeCoverageRelationStatistics Valid=787, Invalid=3635, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 16:50:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54358 states. [2021-06-05 16:50:22,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54358 to 44083. [2021-06-05 16:50:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44083 states, 44082 states have (on average 3.8560410144730275) internal successors, (169982), 44082 states have internal predecessors, (169982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:50:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44083 states to 44083 states and 169982 transitions. [2021-06-05 16:50:22,358 INFO L78 Accepts]: Start accepts. Automaton has 44083 states and 169982 transitions. Word has length 30 [2021-06-05 16:50:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:50:22,358 INFO L482 AbstractCegarLoop]: Abstraction has 44083 states and 169982 transitions. [2021-06-05 16:50:22,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:50:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 44083 states and 169982 transitions. [2021-06-05 16:50:22,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:50:22,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:50:22,430 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:50:22,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5047 [2021-06-05 16:50:22,630 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:50:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:50:22,631 INFO L82 PathProgramCache]: Analyzing trace with hash -728055690, now seen corresponding path program 180 times [2021-06-05 16:50:22,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:50:22,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410355116] [2021-06-05 16:50:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:50:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:50:23,165 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-05 16:50:23,323 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-06-05 16:50:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:50:23,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:50:23,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410355116] [2021-06-05 16:50:23,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410355116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:50:23,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819872236] [2021-06-05 16:50:23,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:50:23,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 16:50:23,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 16:50:23,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 16:50:23,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:50:24,495 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-06-05 16:50:24,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 16:50:24,950 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 16:50:24,965 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:24,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:50:24,980 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:24,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:24,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:24,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:24,994 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 16:50:25,009 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:25,035 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 16:50:25,051 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:50:25,065 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 16:50:25,081 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:50:25,095 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 16:50:25,110 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,126 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,142 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:50:25,157 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:50:25,173 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:25,188 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:50:25,205 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,220 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,236 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,251 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,266 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,282 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 16:50:25,297 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 16:50:25,312 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 16:50:25,328 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,345 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 16:50:25,361 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 16:50:25,376 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,391 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 16:50:25,407 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 16:50:25,423 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:25,439 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 16:50:25,455 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 16:50:25,471 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,486 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,501 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 16:50:25,517 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 16:50:25,532 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:50:25,548 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 16:50:25,564 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 16:50:25,579 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:50:25,594 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:50:25,610 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 16:50:25,626 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 16:50:25,640 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 16:50:25,657 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,673 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,688 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:50:25,704 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:25,719 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,733 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:25,747 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:25,762 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 16:50:25,776 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,790 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:25,803 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:25,817 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:50:25,830 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 16:50:25,843 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 25 [2021-06-05 16:50:25,857 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 16:50:25,870 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 16:50:25,881 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:25,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:25,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 16:50:25,889 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:25,983 INFO L628 ElimStorePlain]: treesize reduction 187, result has 28.6 percent of original size [2021-06-05 16:50:25,984 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 16:50:25,985 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 16:50:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:50:26,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819872236] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:50:26,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 16:50:26,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-05 16:50:26,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188160531] [2021-06-05 16:50:26,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 16:50:26,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 16:50:26,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 16:50:26,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-06-05 16:50:26,044 INFO L87 Difference]: Start difference. First operand 44083 states and 169982 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:50:27,316 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 82 [2021-06-05 16:50:27,875 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 76 [2021-06-05 16:50:28,347 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-06-05 16:50:28,598 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2021-06-05 16:50:29,582 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 98 [2021-06-05 16:50:29,748 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 16:50:30,002 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2021-06-05 16:50:30,204 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2021-06-05 16:50:30,488 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2021-06-05 16:50:30,935 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 99 [2021-06-05 16:50:31,179 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-06-05 16:50:31,526 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 85 [2021-06-05 16:50:31,785 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 86 [2021-06-05 16:50:32,003 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-06-05 16:50:32,240 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-06-05 16:50:32,700 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2021-06-05 16:50:32,893 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 16:50:33,179 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-06-05 16:50:33,662 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2021-06-05 16:50:33,932 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2021-06-05 16:50:34,095 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-06-05 16:50:34,306 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-06-05 16:50:34,606 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2021-06-05 16:50:34,872 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-06-05 16:50:35,234 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-06-05 16:50:35,608 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-06-05 16:50:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 16:50:35,913 INFO L93 Difference]: Finished difference Result 62559 states and 233062 transitions. [2021-06-05 16:50:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 16:50:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 16:50:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 16:50:36,079 INFO L225 Difference]: With dead ends: 62559 [2021-06-05 16:50:36,079 INFO L226 Difference]: Without dead ends: 62529 [2021-06-05 16:50:36,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 9506.9ms TimeCoverageRelationStatistics Valid=585, Invalid=3971, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 16:50:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62529 states. [2021-06-05 16:50:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62529 to 44109. [2021-06-05 16:50:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44109 states, 44108 states have (on average 3.8559671714881656) internal successors, (170079), 44108 states have internal predecessors, (170079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:50:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44109 states to 44109 states and 170079 transitions. [2021-06-05 16:50:37,220 INFO L78 Accepts]: Start accepts. Automaton has 44109 states and 170079 transitions. Word has length 30 [2021-06-05 16:50:37,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 16:50:37,220 INFO L482 AbstractCegarLoop]: Abstraction has 44109 states and 170079 transitions. [2021-06-05 16:50:37,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 16:50:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 44109 states and 170079 transitions. [2021-06-05 16:50:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 16:50:37,294 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 16:50:37,294 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 16:50:37,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 262 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5068 [2021-06-05 16:50:37,495 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 16:50:37,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 16:50:37,495 INFO L82 PathProgramCache]: Analyzing trace with hash -610282946, now seen corresponding path program 181 times [2021-06-05 16:50:37,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 16:50:37,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555969867] [2021-06-05 16:50:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 16:50:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:50:38,149 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2021-06-05 16:50:38,401 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2021-06-05 16:50:38,581 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2021-06-05 16:50:38,763 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2021-06-05 16:50:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 16:50:38,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 16:50:38,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555969867] [2021-06-05 16:50:38,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555969867] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 16:50:38,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591093131] [2021-06-05 16:50:38,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:50:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 16:50:38,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 16:50:38,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 16:50:39,866 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-06-05 16:50:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 16:50:40,389 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:40,404 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 16:50:40,419 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 16:50:40,433 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 16:50:40,446 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:40,459 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 16:50:40,473 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 16:50:40,487 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 16:50:40,515 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 16:50:40,533 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:40,548 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 16:50:40,562 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:40,577 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,585 INFO L190 IndexEqualityManager]: detected not equals via solver Received shutdown request... [2021-06-05 16:50:40,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 16:50:40,594 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 16:50:40,613 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 16:50:40,627 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 16:50:40,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 16:50:40,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 16:50:40,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 16:50:40,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5305,263 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 16:50:40,843 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 16:50:40,844 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 16:50:40,846 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 16:50:40,846 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 04:50:40 BasicIcfg [2021-06-05 16:50:40,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 16:50:40,847 INFO L168 Benchmark]: Toolchain (without parser) took 804884.40 ms. Allocated memory was 388.0 MB in the beginning and 15.7 GB in the end (delta: 15.3 GB). Free memory was 367.5 MB in the beginning and 11.2 GB in the end (delta: -10.8 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. [2021-06-05 16:50:40,847 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 388.0 MB. Free memory was 368.7 MB in the beginning and 368.6 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 16:50:40,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.12 ms. Allocated memory is still 388.0 MB. Free memory was 367.4 MB in the beginning and 366.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 16:50:40,847 INFO L168 Benchmark]: Boogie Preprocessor took 10.41 ms. Allocated memory is still 388.0 MB. Free memory was 366.0 MB in the beginning and 365.0 MB in the end (delta: 958.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 16:50:40,847 INFO L168 Benchmark]: RCFGBuilder took 208.54 ms. Allocated memory is still 388.0 MB. Free memory was 364.9 MB in the beginning and 351.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 16:50:40,847 INFO L168 Benchmark]: TraceAbstraction took 804643.63 ms. Allocated memory was 388.0 MB in the beginning and 15.7 GB in the end (delta: 15.3 GB). Free memory was 351.1 MB in the beginning and 11.2 GB in the end (delta: -10.9 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. [2021-06-05 16:50:40,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 388.0 MB. Free memory was 368.7 MB in the beginning and 368.6 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.12 ms. Allocated memory is still 388.0 MB. Free memory was 367.4 MB in the beginning and 366.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.41 ms. Allocated memory is still 388.0 MB. Free memory was 366.0 MB in the beginning and 365.0 MB in the end (delta: 958.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 208.54 ms. Allocated memory is still 388.0 MB. Free memory was 364.9 MB in the beginning and 351.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 804643.63 ms. Allocated memory was 388.0 MB in the beginning and 15.7 GB in the end (delta: 15.3 GB). Free memory was 351.1 MB in the beginning and 11.2 GB in the end (delta: -10.9 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 804523.9ms, OverallIterations: 265, TraceHistogramMax: 3, EmptinessCheckTime: 5728.8ms, AutomataDifference: 441471.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 30.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11929 SDtfs, 74938 SDslu, 94079 SDs, 0 SdLazy, 150427 SolverSat, 13556 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79612.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17081 GetRequests, 5552 SyntacticMatches, 267 SemanticMatches, 11262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192220 ImplicationChecksByTransitivity, 398267.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48513occurred in iteration=252, InterpolantAutomatonStates: 10014, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 87116.8ms AutomataMinimizationTime, 264 MinimizatonAttempts, 1371993 StatesRemovedByMinimization, 264 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 854.7ms SsaConstructionTime, 2582.8ms SatisfiabilityAnalysisTime, 205107.1ms InterpolantComputationTime, 14054 NumberOfCodeBlocks, 14054 NumberOfCodeBlocksAsserted, 916 NumberOfCheckSat, 13529 ConstructedInterpolants, 177 QuantifiedInterpolants, 289353 SizeOfPredicates, 1178 NumberOfNonLiveVariables, 18278 ConjunctsInSsa, 4011 ConjunctsInUnsatCore, 525 InterpolantComputations, 3 PerfectInterpolantSequences, 1023/4502 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown