/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array-hom.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 23:54:41,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 23:54:41,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 23:54:41,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 23:54:41,612 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.epf [2021-06-05 23:54:41,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 23:54:41,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 23:54:41,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 23:54:41,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 23:54:41,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 23:54:41,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 23:54:41,645 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 23:54:41,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 23:54:41,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 23:54:41,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 23:54:41,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 23:54:41,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 23:54:41,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 23:54:41,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 23:54:41,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 23:54:41,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 23:54:41,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 23:54:41,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 23:54:41,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 23:54:41,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 23:54:41,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 23:54:41,648 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 23:54:41,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 23:54:41,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 23:54:41,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 23:54:41,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 23:54:41,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 23:54:41,882 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 23:54:41,883 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 23:54:41,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array-hom.wvr.bpl [2021-06-05 23:54:41,884 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array-hom.wvr.bpl' [2021-06-05 23:54:41,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 23:54:41,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 23:54:41,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 23:54:41,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 23:54:41,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 23:54:41,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 23:54:41,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 23:54:41,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 23:54:41,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 23:54:41,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/1) ... [2021-06-05 23:54:41,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 23:54:41,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 23:54:41,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 23:54:41,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 23:54:41,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (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 23:54:42,027 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 23:54:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 23:54:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 23:54:42,028 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 23:54:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 23:54:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 23:54:42,028 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 23:54:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 23:54:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 23:54:42,029 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 23:54:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 23:54:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 23:54:42,030 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 23:54:42,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 23:54:42,186 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 23:54:42,188 INFO L202 PluginConnector]: Adding new model max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 11:54:42 BoogieIcfgContainer [2021-06-05 23:54:42,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 23:54:42,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 23:54:42,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 23:54:42,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 23:54:42,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 11:54:41" (1/2) ... [2021-06-05 23:54:42,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1260fb and model type max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 11:54:42, skipping insertion in model container [2021-06-05 23:54:42,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 11:54:42" (2/2) ... [2021-06-05 23:54:42,192 INFO L111 eAbstractionObserver]: Analyzing ICFG max-array-hom.wvr.bpl [2021-06-05 23:54:42,196 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 23:54:42,196 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 23:54:42,196 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 23:54:42,196 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 23:54:42,222 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 23:54:42,245 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 23:54:42,257 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 23:54:42,257 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 23:54:42,257 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 23:54:42,257 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 23:54:42,257 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 23:54:42,257 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 23:54:42,257 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 23:54:42,257 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 23:54:42,272 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-05 23:54:42,303 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 23:54:42,305 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 23:54:42,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 23:54:42,310 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:42,311 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 23:54:42,311 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash -986458276, now seen corresponding path program 1 times [2021-06-05 23:54:42,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:42,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309846771] [2021-06-05 23:54:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:42,508 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 23:54:42,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:42,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309846771] [2021-06-05 23:54:42,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309846771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 23:54:42,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 23:54:42,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 23:54:42,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821651327] [2021-06-05 23:54:42,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 23:54:42,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:42,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 23:54:42,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 23:54:42,527 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 23:54:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:42,581 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-05 23:54:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 23:54:42,583 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 23:54:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:42,593 INFO L225 Difference]: With dead ends: 217 [2021-06-05 23:54:42,593 INFO L226 Difference]: Without dead ends: 202 [2021-06-05 23:54:42,595 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 23:54:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-05 23:54:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-05 23:54:42,641 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 23:54:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-05 23:54:42,643 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-05 23:54:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:42,644 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-05 23:54:42,644 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 23:54:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-05 23:54:42,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 23:54:42,649 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:42,650 INFO L554 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 23:54:42,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 23:54:42,650 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -433058596, now seen corresponding path program 1 times [2021-06-05 23:54:42,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:42,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530580278] [2021-06-05 23:54:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:42,692 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 23:54:42,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:42,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530580278] [2021-06-05 23:54:42,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530580278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 23:54:42,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 23:54:42,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 23:54:42,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862625058] [2021-06-05 23:54:42,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 23:54:42,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:42,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 23:54:42,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 23:54:42,695 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 23:54:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:42,734 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-05 23:54:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 23:54:42,735 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 23:54:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:42,738 INFO L225 Difference]: With dead ends: 158 [2021-06-05 23:54:42,738 INFO L226 Difference]: Without dead ends: 158 [2021-06-05 23:54:42,739 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 23:54:42,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-05 23:54:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-05 23:54:42,748 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 23:54:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-05 23:54:42,749 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-05 23:54:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:42,749 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-05 23:54:42,749 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 23:54:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-05 23:54:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 23:54:42,750 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:42,750 INFO L554 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 23:54:42,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 23:54:42,750 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:42,751 INFO L82 PathProgramCache]: Analyzing trace with hash 275548602, now seen corresponding path program 1 times [2021-06-05 23:54:42,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:42,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027046295] [2021-06-05 23:54:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:42,789 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 23:54:42,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:42,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027046295] [2021-06-05 23:54:42,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027046295] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 23:54:42,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 23:54:42,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 23:54:42,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443271018] [2021-06-05 23:54:42,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 23:54:42,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 23:54:42,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 23:54:42,791 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 23:54:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:42,833 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-05 23:54:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 23:54:42,834 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 23:54:42,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:42,835 INFO L225 Difference]: With dead ends: 183 [2021-06-05 23:54:42,835 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 23:54:42,835 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 23:54:42,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 23:54:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-05 23:54:42,842 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 23:54:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-05 23:54:42,843 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-05 23:54:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:42,843 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-05 23:54:42,843 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 23:54:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-05 23:54:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:54:42,845 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:42,845 INFO L554 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 23:54:42,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 23:54:42,845 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:42,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:42,846 INFO L82 PathProgramCache]: Analyzing trace with hash -483303622, now seen corresponding path program 1 times [2021-06-05 23:54:42,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:42,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228614264] [2021-06-05 23:54:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:43,261 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 23:54:43,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:43,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228614264] [2021-06-05 23:54:43,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228614264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:43,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694649905] [2021-06-05 23:54:43,262 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 23:54:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:43,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 23:54:43,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:43,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:54:43,627 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:43,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:54:43,637 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:43,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:54:43,643 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:43,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:43,664 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 23:54:43,664 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:103, output treesize:21 [2021-06-05 23:54:43,717 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 23:54:43,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694649905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:43,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:43,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:54:43,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802553573] [2021-06-05 23:54:43,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:54:43,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:43,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:54:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:54:43,718 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 23:54:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:44,008 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-05 23:54:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 23:54:44,009 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 22 [2021-06-05 23:54:44,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:44,011 INFO L225 Difference]: With dead ends: 330 [2021-06-05 23:54:44,011 INFO L226 Difference]: Without dead ends: 315 [2021-06-05 23:54:44,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 547.5ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:54:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-05 23:54:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-05 23:54:44,019 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 23:54:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-05 23:54:44,020 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-05 23:54:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:44,020 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-05 23:54:44,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 23:54:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-05 23:54:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:54:44,021 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:44,021 INFO L554 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 23:54:44,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:44,237 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:44,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:44,237 INFO L82 PathProgramCache]: Analyzing trace with hash -651112714, now seen corresponding path program 2 times [2021-06-05 23:54:44,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:44,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751878075] [2021-06-05 23:54:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:44,526 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 23:54:44,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:44,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751878075] [2021-06-05 23:54:44,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751878075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:44,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268730710] [2021-06-05 23:54:44,527 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 23:54:44,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:54:44,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:44,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 23:54:44,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:44,752 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:54:44,752 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 23:54:44,756 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:44,765 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:54:44,765 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 23:54:44,767 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:44,775 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:44,775 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 23:54:44,787 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:44,794 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:44,794 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 23:54:44,796 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:44,839 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:44,854 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 23:54:44,855 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:125, output treesize:83 [2021-06-05 23:54:44,958 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 23:54:44,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268730710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:44,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:44,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-05 23:54:44,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358392502] [2021-06-05 23:54:44,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 23:54:44,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:44,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 23:54:44,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 23:54:44,959 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 23:54:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:45,389 INFO L93 Difference]: Finished difference Result 374 states and 1077 transitions. [2021-06-05 23:54:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 23:54:45,390 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 23:54:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:45,391 INFO L225 Difference]: With dead ends: 374 [2021-06-05 23:54:45,392 INFO L226 Difference]: Without dead ends: 359 [2021-06-05 23:54:45,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 606.6ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:54:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-06-05 23:54:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229. [2021-06-05 23:54:45,398 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 23:54:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-05 23:54:45,399 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-05 23:54:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:45,399 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-05 23:54:45,399 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 23:54:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-05 23:54:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:54:45,400 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:45,400 INFO L554 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 23:54:45,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:45,617 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:45,617 INFO L82 PathProgramCache]: Analyzing trace with hash -352339266, now seen corresponding path program 3 times [2021-06-05 23:54:45,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:45,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152494432] [2021-06-05 23:54:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:45,760 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 23:54:45,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:45,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152494432] [2021-06-05 23:54:45,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152494432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:45,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820983027] [2021-06-05 23:54:45,760 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 23:54:45,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 23:54:45,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:45,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 23:54:45,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:45,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:54:45,886 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:45,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:54:45,891 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:45,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:54:45,894 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:45,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 23:54:45,897 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:45,899 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 23:54:45,899 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:45,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:54:45,907 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:45,941 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 23:54:45,942 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:54:45,943 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:145, output treesize:21 [2021-06-05 23:54:45,983 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 23:54:45,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820983027] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:45,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:45,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 23:54:45,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499703515] [2021-06-05 23:54:45,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:54:45,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:45,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:54:45,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:54:45,985 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) 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 23:54:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:46,147 INFO L93 Difference]: Finished difference Result 296 states and 831 transitions. [2021-06-05 23:54:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 23:54:46,147 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) 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 22 [2021-06-05 23:54:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:46,148 INFO L225 Difference]: With dead ends: 296 [2021-06-05 23:54:46,148 INFO L226 Difference]: Without dead ends: 281 [2021-06-05 23:54:46,149 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-06-05 23:54:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-06-05 23:54:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241. [2021-06-05 23:54:46,154 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 23:54:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-05 23:54:46,155 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-05 23:54:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:46,155 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-05 23:54:46,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) 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 23:54:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-05 23:54:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 23:54:46,156 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:46,156 INFO L554 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 23:54:46,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-05 23:54:46,374 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:46,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1218486334, now seen corresponding path program 4 times [2021-06-05 23:54:46,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:46,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005557591] [2021-06-05 23:54:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:46,574 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 23:54:46,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:46,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005557591] [2021-06-05 23:54:46,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005557591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:46,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110614139] [2021-06-05 23:54:46,574 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 23:54:46,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:54:46,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:46,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 23:54:46,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:46,756 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:54:46,756 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 23:54:46,759 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:46,766 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:46,766 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 23:54:46,771 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:46,818 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:46,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:46,827 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 23:54:46,835 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:46,842 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:54:46,843 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 23:54:46,844 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:54:46,885 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:54:46,899 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 23:54:46,899 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:133, output treesize:83 [2021-06-05 23:54:47,000 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 23:54:47,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110614139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:47,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:47,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:54:47,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001090900] [2021-06-05 23:54:47,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:47,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:47,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:47,001 INFO L87 Difference]: Start difference. First operand 241 states and 694 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 23:54:47,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:47,316 INFO L93 Difference]: Finished difference Result 409 states and 1185 transitions. [2021-06-05 23:54:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 23:54:47,316 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 23:54:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:47,318 INFO L225 Difference]: With dead ends: 409 [2021-06-05 23:54:47,318 INFO L226 Difference]: Without dead ends: 394 [2021-06-05 23:54:47,318 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 445.7ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:54:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-06-05 23:54:47,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 247. [2021-06-05 23:54:47,323 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 23:54:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-05 23:54:47,324 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-05 23:54:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:47,324 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-05 23:54:47,324 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 23:54:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-05 23:54:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:47,325 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:47,325 INFO L554 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 23:54:47,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:47,541 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:47,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1613936552, now seen corresponding path program 5 times [2021-06-05 23:54:47,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:47,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027050988] [2021-06-05 23:54:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:47,586 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 23:54:47,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:47,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027050988] [2021-06-05 23:54:47,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027050988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:47,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143569432] [2021-06-05 23:54:47,586 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 23:54:47,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:54:47,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:47,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:47,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:47,684 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 23:54:47,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143569432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:47,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:47,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:54:47,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443302429] [2021-06-05 23:54:47,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:54:47,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:47,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:54:47,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:54:47,686 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 23:54:48,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:48,002 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-05 23:54:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 23:54:48,002 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 24 [2021-06-05 23:54:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:48,005 INFO L225 Difference]: With dead ends: 619 [2021-06-05 23:54:48,005 INFO L226 Difference]: Without dead ends: 619 [2021-06-05 23:54:48,005 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 193.7ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-05 23:54:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-05 23:54:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-05 23:54:48,011 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 23:54:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-05 23:54:48,012 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-05 23:54:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:48,012 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-05 23:54:48,012 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 23:54:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-05 23:54:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:48,013 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:48,013 INFO L554 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 23:54:48,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-06-05 23:54:48,229 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:48,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1704711900, now seen corresponding path program 6 times [2021-06-05 23:54:48,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:48,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032028667] [2021-06-05 23:54:48,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:48,263 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 23:54:48,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:48,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032028667] [2021-06-05 23:54:48,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032028667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:48,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109706345] [2021-06-05 23:54:48,264 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 23:54:48,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:54:48,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:48,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:48,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:48,372 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 23:54:48,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109706345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:48,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:48,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:54:48,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700700204] [2021-06-05 23:54:48,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:48,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:48,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:48,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:48,374 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 23:54:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:49,007 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-05 23:54:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 23:54:49,007 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 23:54:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:49,011 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 23:54:49,011 INFO L226 Difference]: Without dead ends: 1078 [2021-06-05 23:54:49,012 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 402.7ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:54:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-05 23:54:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-05 23:54:49,021 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 23:54:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-05 23:54:49,022 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-05 23:54:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:49,022 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-05 23:54:49,022 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 23:54:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-05 23:54:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:49,024 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:49,024 INFO L554 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 23:54:49,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:49,240 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -2023303316, now seen corresponding path program 7 times [2021-06-05 23:54:49,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:49,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997210945] [2021-06-05 23:54:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:49,271 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 23:54:49,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:49,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997210945] [2021-06-05 23:54:49,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997210945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:49,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82101777] [2021-06-05 23:54:49,271 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 23:54:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:49,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:49,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:49,376 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 23:54:49,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82101777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:49,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:49,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:54:49,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659553128] [2021-06-05 23:54:49,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:49,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:49,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:49,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:49,380 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 23:54:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:49,928 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-05 23:54:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 23:54:49,928 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 23:54:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:49,931 INFO L225 Difference]: With dead ends: 951 [2021-06-05 23:54:49,931 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 23:54:49,932 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 357.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 23:54:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 23:54:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-05 23:54:49,939 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 23:54:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-05 23:54:49,940 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-05 23:54:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:49,940 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-05 23:54:49,940 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 23:54:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-05 23:54:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:49,941 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:49,941 INFO L554 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 23:54:50,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:50,153 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:50,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:50,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1087164644, now seen corresponding path program 1 times [2021-06-05 23:54:50,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:50,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002944466] [2021-06-05 23:54:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:50,181 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 23:54:50,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:50,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002944466] [2021-06-05 23:54:50,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002944466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:50,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977034281] [2021-06-05 23:54:50,182 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 23:54:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:50,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 23:54:50,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:50,254 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 23:54:50,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977034281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:50,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:50,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 23:54:50,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646490875] [2021-06-05 23:54:50,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 23:54:50,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 23:54:50,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 23:54:50,255 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 23:54:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:50,353 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-05 23:54:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 23:54:50,353 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 23:54:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:50,355 INFO L225 Difference]: With dead ends: 669 [2021-06-05 23:54:50,355 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 23:54:50,355 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:50,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 23:54:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-05 23:54:50,363 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 23:54:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-05 23:54:50,364 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-05 23:54:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:50,364 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-05 23:54:50,364 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 23:54:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-05 23:54:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:50,365 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:50,366 INFO L554 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 23:54:50,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-06-05 23:54:50,577 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:50,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1524133352, now seen corresponding path program 8 times [2021-06-05 23:54:50,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:50,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163554583] [2021-06-05 23:54:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:50,611 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 23:54:50,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:50,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163554583] [2021-06-05 23:54:50,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163554583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:50,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090856190] [2021-06-05 23:54:50,611 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 23:54:50,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:54:50,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:50,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:50,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:50,719 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 23:54:50,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090856190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:50,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:50,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 23:54:50,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124180045] [2021-06-05 23:54:50,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:50,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:50,720 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 23:54:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:50,880 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-05 23:54:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 23:54:50,880 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 23:54:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:50,883 INFO L225 Difference]: With dead ends: 710 [2021-06-05 23:54:50,883 INFO L226 Difference]: Without dead ends: 672 [2021-06-05 23:54:50,883 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-05 23:54:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-05 23:54:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-05 23:54:50,891 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 23:54:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-05 23:54:50,892 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-05 23:54:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:50,892 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-05 23:54:50,892 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 23:54:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-05 23:54:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:50,894 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:50,894 INFO L554 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 23:54:51,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:51,113 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash 2064876612, now seen corresponding path program 2 times [2021-06-05 23:54:51,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:51,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792050912] [2021-06-05 23:54:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:51,140 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 23:54:51,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:51,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792050912] [2021-06-05 23:54:51,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792050912] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:51,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377850394] [2021-06-05 23:54:51,140 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 23:54:51,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:54:51,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:51,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 23:54:51,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:51,224 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 23:54:51,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377850394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:51,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:51,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 23:54:51,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242622114] [2021-06-05 23:54:51,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 23:54:51,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:51,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 23:54:51,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 23:54:51,226 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 23:54:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:51,322 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-05 23:54:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 23:54:51,322 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 23:54:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:51,325 INFO L225 Difference]: With dead ends: 830 [2021-06-05 23:54:51,325 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 23:54:51,325 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 23:54:51,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-05 23:54:51,334 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 23:54:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-05 23:54:51,336 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-05 23:54:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:51,336 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-05 23:54:51,336 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 23:54:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-05 23:54:51,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:51,337 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:51,337 INFO L554 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 23:54:51,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-06-05 23:54:51,557 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash 718195046, now seen corresponding path program 9 times [2021-06-05 23:54:51,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:51,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959899882] [2021-06-05 23:54:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:51,594 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 23:54:51,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:51,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959899882] [2021-06-05 23:54:51,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959899882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:51,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160988929] [2021-06-05 23:54:51,595 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 23:54:51,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:54:51,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:51,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:51,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:51,687 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 23:54:51,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160988929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:51,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:51,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:54:51,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582280413] [2021-06-05 23:54:51,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:54:51,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:51,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:54:51,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:54:51,688 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 23:54:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:51,953 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-05 23:54:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 23:54:51,953 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 23:54:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:51,957 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 23:54:51,957 INFO L226 Difference]: Without dead ends: 1196 [2021-06-05 23:54:51,957 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 164.7ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-05 23:54:51,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-05 23:54:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-05 23:54:51,968 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 23:54:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-05 23:54:51,970 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-05 23:54:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:51,970 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-05 23:54:51,970 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 23:54:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-05 23:54:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:51,971 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:51,971 INFO L554 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 23:54:52,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-05 23:54:52,177 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:52,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1503109140, now seen corresponding path program 10 times [2021-06-05 23:54:52,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:52,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492472494] [2021-06-05 23:54:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:52,207 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 23:54:52,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:52,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492472494] [2021-06-05 23:54:52,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492472494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:52,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725623982] [2021-06-05 23:54:52,207 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 23:54:52,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:54:52,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:52,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:52,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:52,298 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 23:54:52,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725623982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:52,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:52,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:54:52,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680695020] [2021-06-05 23:54:52,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:54:52,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:52,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:54:52,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:54:52,300 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 23:54:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:52,693 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-05 23:54:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 23:54:52,693 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 23:54:52,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:52,698 INFO L225 Difference]: With dead ends: 1492 [2021-06-05 23:54:52,698 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 23:54:52,698 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 226.0ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 23:54:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 23:54:52,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-05 23:54:52,710 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 23:54:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-05 23:54:52,712 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-05 23:54:52,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:52,712 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-05 23:54:52,712 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 23:54:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-05 23:54:52,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:52,713 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:52,713 INFO L554 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 23:54:52,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-06-05 23:54:52,925 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:52,925 INFO L82 PathProgramCache]: Analyzing trace with hash 420086484, now seen corresponding path program 11 times [2021-06-05 23:54:52,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:52,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381839548] [2021-06-05 23:54:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:52,953 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 23:54:52,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:52,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381839548] [2021-06-05 23:54:52,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381839548] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:52,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295702839] [2021-06-05 23:54:52,954 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 23:54:52,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:54:52,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:52,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:52,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:53,046 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 23:54:53,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295702839] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:53,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:53,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 23:54:53,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281628943] [2021-06-05 23:54:53,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:53,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:53,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:53,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:53,047 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 23:54:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:53,253 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-05 23:54:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:54:53,253 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 23:54:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:53,257 INFO L225 Difference]: With dead ends: 1258 [2021-06-05 23:54:53,257 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 23:54:53,257 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-05 23:54:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 23:54:53,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-05 23:54:53,269 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 23:54:53,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-05 23:54:53,271 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-05 23:54:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:53,271 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-05 23:54:53,271 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 23:54:53,271 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-05 23:54:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:53,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:53,272 INFO L554 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 23:54:53,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-06-05 23:54:53,485 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:53,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1891164602, now seen corresponding path program 12 times [2021-06-05 23:54:53,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:53,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294518275] [2021-06-05 23:54:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:53,525 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 23:54:53,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:53,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294518275] [2021-06-05 23:54:53,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294518275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:53,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314842132] [2021-06-05 23:54:53,526 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 23:54:53,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:54:53,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:53,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:53,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:53,611 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 23:54:53,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314842132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:53,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:53,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 23:54:53,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738684947] [2021-06-05 23:54:53,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:53,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:53,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:53,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:53,612 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 23:54:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:53,862 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-05 23:54:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 23:54:53,862 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 23:54:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:53,867 INFO L225 Difference]: With dead ends: 1329 [2021-06-05 23:54:53,867 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 23:54:53,867 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:54:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 23:54:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-05 23:54:53,890 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 23:54:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-05 23:54:53,891 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-05 23:54:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:53,892 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-05 23:54:53,892 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 23:54:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-05 23:54:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:53,893 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:53,893 INFO L554 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 23:54:54,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:54,109 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:54,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1458287998, now seen corresponding path program 13 times [2021-06-05 23:54:54,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:54,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375540241] [2021-06-05 23:54:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:54,154 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 23:54:54,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:54,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375540241] [2021-06-05 23:54:54,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375540241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:54,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829893228] [2021-06-05 23:54:54,155 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 23:54:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:54,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:54,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:54,233 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 23:54:54,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829893228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:54,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:54,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:54:54,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539833241] [2021-06-05 23:54:54,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:54:54,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:54:54,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:54:54,234 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 23:54:54,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:54,516 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-05 23:54:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 23:54:54,517 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 23:54:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:54,522 INFO L225 Difference]: With dead ends: 1548 [2021-06-05 23:54:54,522 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 23:54:54,522 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 172.5ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:54:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 23:54:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-05 23:54:54,536 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 23:54:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-05 23:54:54,538 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-05 23:54:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:54,538 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-05 23:54:54,538 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 23:54:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-05 23:54:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:54,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:54,539 INFO L554 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 23:54:54,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:54,753 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:54,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1186278808, now seen corresponding path program 14 times [2021-06-05 23:54:54,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:54,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323136041] [2021-06-05 23:54:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:54,785 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 23:54:54,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:54,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323136041] [2021-06-05 23:54:54,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323136041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:54,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022810365] [2021-06-05 23:54:54,786 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 23:54:54,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:54:54,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:54,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:54,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:54,897 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 23:54:54,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022810365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:54,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:54,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:54:54,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574849528] [2021-06-05 23:54:54,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:54,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:54,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:54,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:54,898 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 23:54:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:55,549 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-05 23:54:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 23:54:55,550 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 23:54:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:55,558 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 23:54:55,558 INFO L226 Difference]: Without dead ends: 2734 [2021-06-05 23:54:55,559 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 399.2ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:54:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-05 23:54:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-05 23:54:55,578 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 23:54:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-05 23:54:55,580 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-05 23:54:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:55,581 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-05 23:54:55,581 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 23:54:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-05 23:54:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:55,582 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:55,582 INFO L554 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 23:54:55,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:55,793 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:55,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1753230888, now seen corresponding path program 15 times [2021-06-05 23:54:55,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:55,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854960384] [2021-06-05 23:54:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:55,821 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 23:54:55,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:55,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854960384] [2021-06-05 23:54:55,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854960384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:55,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114224863] [2021-06-05 23:54:55,821 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 23:54:55,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:54:55,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:55,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:55,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:55,929 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 23:54:55,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114224863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:55,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:55,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:54:55,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605811507] [2021-06-05 23:54:55,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:55,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:55,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:55,930 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 23:54:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:56,571 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-05 23:54:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 23:54:56,571 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 23:54:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:56,576 INFO L225 Difference]: With dead ends: 2693 [2021-06-05 23:54:56,576 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 23:54:56,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 404.0ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:54:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 23:54:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-05 23:54:56,618 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 23:54:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-05 23:54:56,619 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-05 23:54:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:56,620 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-05 23:54:56,620 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 23:54:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-05 23:54:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:56,625 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:56,625 INFO L554 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 23:54:56,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-06-05 23:54:56,829 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:56,829 INFO L82 PathProgramCache]: Analyzing trace with hash 580885030, now seen corresponding path program 16 times [2021-06-05 23:54:56,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:56,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020379997] [2021-06-05 23:54:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:56,856 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 23:54:56,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:56,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020379997] [2021-06-05 23:54:56,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020379997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:56,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106464375] [2021-06-05 23:54:56,857 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 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 23:54:56,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:54:56,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:56,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:56,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:56,951 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 23:54:56,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106464375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:56,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:56,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:54:56,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266460060] [2021-06-05 23:54:56,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:54:56,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:54:56,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:54:56,953 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 23:54:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:57,483 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-05 23:54:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 23:54:57,483 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 23:54:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:57,488 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 23:54:57,488 INFO L226 Difference]: Without dead ends: 2677 [2021-06-05 23:54:57,488 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 313.0ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 23:54:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-05 23:54:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-05 23:54:57,509 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 23:54:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-05 23:54:57,511 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-05 23:54:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:57,511 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-05 23:54:57,511 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 23:54:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-05 23:54:57,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:57,513 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:57,513 INFO L554 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 23:54:57,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-05 23:54:57,730 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash 662261118, now seen corresponding path program 17 times [2021-06-05 23:54:57,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:57,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487085285] [2021-06-05 23:54:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:57,766 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 23:54:57,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:57,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487085285] [2021-06-05 23:54:57,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487085285] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:57,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043546080] [2021-06-05 23:54:57,766 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 23:54:57,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 23:54:57,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:57,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:57,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:57,853 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 23:54:57,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043546080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:57,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:57,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:54:57,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337638971] [2021-06-05 23:54:57,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:54:57,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:57,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:54:57,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:54:57,854 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 23:54:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:58,420 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-05 23:54:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 23:54:58,420 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 23:54:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:58,425 INFO L225 Difference]: With dead ends: 2474 [2021-06-05 23:54:58,425 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 23:54:58,425 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 334.9ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 23:54:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 23:54:58,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-05 23:54:58,448 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 23:54:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-05 23:54:58,450 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-05 23:54:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:58,450 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-05 23:54:58,450 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 23:54:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-05 23:54:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:58,452 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:58,452 INFO L554 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 23:54:58,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 23:54:58,668 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:58,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1592918334, now seen corresponding path program 18 times [2021-06-05 23:54:58,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:58,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492770907] [2021-06-05 23:54:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:58,697 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 23:54:58,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:58,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492770907] [2021-06-05 23:54:58,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492770907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:58,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457219410] [2021-06-05 23:54:58,698 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 23:54:58,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 23:54:58,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:54:58,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:58,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:54:58,813 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 23:54:58,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457219410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:58,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:58,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:54:58,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466711457] [2021-06-05 23:54:58,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:58,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:58,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:58,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:58,814 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 23:54:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:54:59,366 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-05 23:54:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 23:54:59,367 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 23:54:59,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:54:59,371 INFO L225 Difference]: With dead ends: 2514 [2021-06-05 23:54:59,371 INFO L226 Difference]: Without dead ends: 2514 [2021-06-05 23:54:59,372 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 323.7ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 23:54:59,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-05 23:54:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-05 23:54:59,389 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 23:54:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-05 23:54:59,392 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-05 23:54:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:54:59,392 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-05 23:54:59,392 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 23:54:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-05 23:54:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:54:59,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:54:59,394 INFO L554 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 23:54:59,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 23:54:59,610 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:54:59,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:54:59,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1059009808, now seen corresponding path program 19 times [2021-06-05 23:54:59,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:54:59,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57412513] [2021-06-05 23:54:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:54:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:59,642 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 23:54:59,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:54:59,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57412513] [2021-06-05 23:54:59,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57412513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:59,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32205187] [2021-06-05 23:54:59,643 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) [2021-06-05 23:54:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:54:59,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:54:59,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:54:59,745 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 23:54:59,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32205187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:54:59,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:54:59,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:54:59,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303180934] [2021-06-05 23:54:59,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:54:59,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:54:59,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:54:59,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:54:59,747 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 23:55:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:00,270 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-05 23:55:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 23:55:00,271 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 23:55:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:00,283 INFO L225 Difference]: With dead ends: 2332 [2021-06-05 23:55:00,283 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 23:55:00,284 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 294.0ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 23:55:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 23:55:00,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-05 23:55:00,300 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 23:55:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-05 23:55:00,302 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-05 23:55:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:00,303 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-05 23:55:00,303 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 23:55:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-05 23:55:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:00,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:00,305 INFO L554 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 23:55:00,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 23:55:00,521 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:00,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1971295360, now seen corresponding path program 3 times [2021-06-05 23:55:00,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:00,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258526034] [2021-06-05 23:55:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:00,544 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 23:55:00,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:00,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258526034] [2021-06-05 23:55:00,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258526034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:00,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938382588] [2021-06-05 23:55:00,545 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 23:55:00,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 23:55:00,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:00,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 23:55:00,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:00,634 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 23:55:00,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938382588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:00,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:00,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 23:55:00,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312979608] [2021-06-05 23:55:00,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 23:55:00,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:00,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 23:55:00,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 23:55:00,635 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 23:55:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:00,705 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-05 23:55:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 23:55:00,705 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 23:55:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:00,707 INFO L225 Difference]: With dead ends: 929 [2021-06-05 23:55:00,707 INFO L226 Difference]: Without dead ends: 929 [2021-06-05 23:55:00,707 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:55:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-05 23:55:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-05 23:55:00,716 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 23:55:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-05 23:55:00,717 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-05 23:55:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:00,718 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-05 23:55:00,718 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 23:55:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-05 23:55:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:00,719 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:00,719 INFO L554 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 23:55:00,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:00,933 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:00,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:00,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1041095616, now seen corresponding path program 20 times [2021-06-05 23:55:00,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:00,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14980163] [2021-06-05 23:55:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:00,962 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 23:55:00,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:00,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14980163] [2021-06-05 23:55:00,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14980163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:00,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122797448] [2021-06-05 23:55:00,963 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 23:55:00,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:55:00,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:00,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:00,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:01,036 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 23:55:01,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122797448] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:01,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:01,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 23:55:01,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586307465] [2021-06-05 23:55:01,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 23:55:01,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:01,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 23:55:01,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 23:55:01,038 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 23:55:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:01,287 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-05 23:55:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 23:55:01,288 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 23:55:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:01,290 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 23:55:01,290 INFO L226 Difference]: Without dead ends: 1555 [2021-06-05 23:55:01,291 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:55:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-05 23:55:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-05 23:55:01,304 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 23:55:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-05 23:55:01,306 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-05 23:55:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:01,306 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-05 23:55:01,306 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 23:55:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-05 23:55:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:01,308 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:01,308 INFO L554 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 23:55:01,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:01,521 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:01,521 INFO L82 PathProgramCache]: Analyzing trace with hash 861583836, now seen corresponding path program 21 times [2021-06-05 23:55:01,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:01,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660436247] [2021-06-05 23:55:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:01,548 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 23:55:01,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:01,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660436247] [2021-06-05 23:55:01,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660436247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:01,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349544748] [2021-06-05 23:55:01,548 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) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:01,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:55:01,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:01,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:01,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:01,634 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 23:55:01,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349544748] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:01,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:01,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 23:55:01,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011609819] [2021-06-05 23:55:01,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 23:55:01,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:01,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 23:55:01,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 23:55:01,637 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 23:55:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:01,840 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-05 23:55:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 23:55:01,840 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 23:55:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:01,843 INFO L225 Difference]: With dead ends: 1605 [2021-06-05 23:55:01,843 INFO L226 Difference]: Without dead ends: 1605 [2021-06-05 23:55:01,843 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-05 23:55:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-05 23:55:01,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-05 23:55:01,855 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 23:55:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-05 23:55:01,857 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-05 23:55:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:01,857 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-05 23:55:01,857 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 23:55:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-05 23:55:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:01,858 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:01,859 INFO L554 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 23:55:02,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:02,075 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:02,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:02,075 INFO L82 PathProgramCache]: Analyzing trace with hash 816762694, now seen corresponding path program 22 times [2021-06-05 23:55:02,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:02,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644160803] [2021-06-05 23:55:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:02,107 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 23:55:02,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:02,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644160803] [2021-06-05 23:55:02,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644160803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:02,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695331725] [2021-06-05 23:55:02,107 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 23:55:02,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:55:02,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:02,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:02,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:02,182 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 23:55:02,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695331725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:02,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:02,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 23:55:02,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136952272] [2021-06-05 23:55:02,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 23:55:02,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:02,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 23:55:02,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 23:55:02,183 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 23:55:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:02,421 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-05 23:55:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 23:55:02,421 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 23:55:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:02,423 INFO L225 Difference]: With dead ends: 1524 [2021-06-05 23:55:02,423 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 23:55:02,424 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 23:55:02,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 23:55:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-05 23:55:02,435 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 23:55:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-05 23:55:02,437 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-05 23:55:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:02,437 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-05 23:55:02,437 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 23:55:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-05 23:55:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:02,438 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:02,438 INFO L554 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 23:55:02,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-06-05 23:55:02,654 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1414099352, now seen corresponding path program 23 times [2021-06-05 23:55:02,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:02,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686499643] [2021-06-05 23:55:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:02,681 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 23:55:02,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:02,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686499643] [2021-06-05 23:55:02,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686499643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:02,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591187237] [2021-06-05 23:55:02,682 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 23:55:02,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:55:02,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:02,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:02,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:02,755 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 23:55:02,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591187237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:02,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:02,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 23:55:02,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915652205] [2021-06-05 23:55:02,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 23:55:02,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:02,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 23:55:02,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 23:55:02,756 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 23:55:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:02,961 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-05 23:55:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:55:02,961 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 23:55:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:02,963 INFO L225 Difference]: With dead ends: 1508 [2021-06-05 23:55:02,963 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 23:55:02,963 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 23:55:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 23:55:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-05 23:55:02,974 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 23:55:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-05 23:55:02,976 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-05 23:55:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:02,976 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-05 23:55:02,976 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 23:55:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-05 23:55:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:02,978 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:02,978 INFO L554 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 23:55:03,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:03,187 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:03,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:03,187 INFO L82 PathProgramCache]: Analyzing trace with hash 887679068, now seen corresponding path program 24 times [2021-06-05 23:55:03,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:03,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402912150] [2021-06-05 23:55:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:03,215 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 23:55:03,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:03,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402912150] [2021-06-05 23:55:03,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402912150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:03,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515078062] [2021-06-05 23:55:03,215 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 23:55:03,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:55:03,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:03,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:03,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:03,303 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 23:55:03,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515078062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:03,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:03,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:55:03,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417190945] [2021-06-05 23:55:03,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:55:03,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:03,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:55:03,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:55:03,304 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 23:55:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:03,745 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-05 23:55:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 23:55:03,745 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 23:55:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:03,748 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 23:55:03,748 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 23:55:03,749 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 283.5ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 23:55:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 23:55:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-05 23:55:03,765 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 23:55:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-05 23:55:03,767 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-05 23:55:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:03,767 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-05 23:55:03,767 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 23:55:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-05 23:55:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:03,769 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:03,769 INFO L554 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 23:55:03,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-06-05 23:55:03,977 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1454631148, now seen corresponding path program 25 times [2021-06-05 23:55:03,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:03,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659991505] [2021-06-05 23:55:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:04,017 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 23:55:04,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:04,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659991505] [2021-06-05 23:55:04,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659991505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:04,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12666629] [2021-06-05 23:55:04,018 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 23:55:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:04,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:04,115 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 23:55:04,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12666629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:04,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:04,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:55:04,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261499225] [2021-06-05 23:55:04,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:55:04,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:04,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:55:04,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:55:04,116 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 23:55:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:04,507 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-05 23:55:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 23:55:04,508 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 23:55:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:04,511 INFO L225 Difference]: With dead ends: 2335 [2021-06-05 23:55:04,511 INFO L226 Difference]: Without dead ends: 2335 [2021-06-05 23:55:04,511 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 271.1ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 23:55:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-05 23:55:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-05 23:55:04,528 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 23:55:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 23:55:04,530 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 23:55:04,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:04,530 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 23:55:04,530 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 23:55:04,530 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 23:55:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:04,532 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:04,532 INFO L554 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 23:55:04,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:04,745 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:04,745 INFO L82 PathProgramCache]: Analyzing trace with hash 282285290, now seen corresponding path program 26 times [2021-06-05 23:55:04,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:04,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590430934] [2021-06-05 23:55:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:04,772 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 23:55:04,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:04,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590430934] [2021-06-05 23:55:04,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590430934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:04,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163044621] [2021-06-05 23:55:04,772 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 23:55:04,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:55:04,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:04,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:04,858 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 23:55:04,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163044621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:04,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:04,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:55:04,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109905531] [2021-06-05 23:55:04,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:55:04,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:04,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:55:04,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:55:04,860 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 23:55:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:05,217 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-05 23:55:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 23:55:05,219 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 23:55:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:05,221 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 23:55:05,221 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 23:55:05,222 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 230.5ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 23:55:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 23:55:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-05 23:55:05,237 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 23:55:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 23:55:05,239 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 23:55:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:05,239 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 23:55:05,239 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 23:55:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 23:55:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:05,240 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:05,240 INFO L554 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 23:55:05,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 23:55:05,441 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:05,441 INFO L82 PathProgramCache]: Analyzing trace with hash 363661378, now seen corresponding path program 27 times [2021-06-05 23:55:05,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:05,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563050932] [2021-06-05 23:55:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:05,469 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 23:55:05,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:05,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563050932] [2021-06-05 23:55:05,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563050932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:05,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369174775] [2021-06-05 23:55:05,469 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 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 23:55:05,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:55:05,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:05,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:05,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:05,548 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 23:55:05,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369174775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:05,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:05,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:55:05,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505745267] [2021-06-05 23:55:05,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:55:05,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:55:05,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:55:05,549 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 23:55:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:05,861 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-05 23:55:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 23:55:05,861 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 23:55:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:05,864 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 23:55:05,864 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 23:55:05,864 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 187.9ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:55:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 23:55:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-05 23:55:05,878 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 23:55:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 23:55:05,880 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 23:55:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:05,880 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 23:55:05,880 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 23:55:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 23:55:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:05,882 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:05,882 INFO L554 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 23:55:06,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:06,082 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:06,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1294318594, now seen corresponding path program 28 times [2021-06-05 23:55:06,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:06,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32679448] [2021-06-05 23:55:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:06,111 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 23:55:06,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:06,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32679448] [2021-06-05 23:55:06,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32679448] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:06,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074657396] [2021-06-05 23:55:06,111 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 23:55:06,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:55:06,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:06,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:06,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:06,201 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 23:55:06,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074657396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:06,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:06,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:55:06,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58273348] [2021-06-05 23:55:06,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:55:06,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:06,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:55:06,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:55:06,202 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 23:55:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:06,544 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-05 23:55:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 23:55:06,545 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 23:55:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:06,547 INFO L225 Difference]: With dead ends: 2199 [2021-06-05 23:55:06,547 INFO L226 Difference]: Without dead ends: 2199 [2021-06-05 23:55:06,548 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 218.1ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 23:55:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-05 23:55:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-05 23:55:06,562 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 23:55:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 23:55:06,564 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 23:55:06,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:06,564 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 23:55:06,564 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 23:55:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 23:55:06,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:06,565 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:06,565 INFO L554 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 23:55:06,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 23:55:06,766 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:06,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1357609548, now seen corresponding path program 29 times [2021-06-05 23:55:06,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:06,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002909528] [2021-06-05 23:55:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:06,808 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 23:55:06,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:06,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002909528] [2021-06-05 23:55:06,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002909528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:06,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982330168] [2021-06-05 23:55:06,808 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 23:55:06,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:55:06,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:06,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:06,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:06,892 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 23:55:06,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982330168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:06,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:06,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:55:06,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262452225] [2021-06-05 23:55:06,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:55:06,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:06,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:55:06,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:55:06,893 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 23:55:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:07,205 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-05 23:55:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 23:55:07,205 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 23:55:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:07,208 INFO L225 Difference]: With dead ends: 2156 [2021-06-05 23:55:07,208 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 23:55:07,208 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 200.7ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-05 23:55:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 23:55:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-05 23:55:07,222 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 23:55:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 23:55:07,224 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 23:55:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:07,224 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 23:55:07,224 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 23:55:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 23:55:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:07,226 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:07,226 INFO L554 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 23:55:07,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-06-05 23:55:07,441 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:07,441 INFO L82 PathProgramCache]: Analyzing trace with hash -354181564, now seen corresponding path program 30 times [2021-06-05 23:55:07,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:07,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264341791] [2021-06-05 23:55:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:07,466 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 23:55:07,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:07,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264341791] [2021-06-05 23:55:07,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264341791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:07,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325737883] [2021-06-05 23:55:07,467 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 23:55:07,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:55:07,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:07,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:07,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:07,552 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 23:55:07,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325737883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:07,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:07,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:55:07,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497723839] [2021-06-05 23:55:07,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:55:07,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:55:07,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:55:07,553 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 23:55:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:07,857 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-05 23:55:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 23:55:07,857 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 23:55:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:07,860 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 23:55:07,860 INFO L226 Difference]: Without dead ends: 2097 [2021-06-05 23:55:07,860 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 184.6ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 23:55:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-05 23:55:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-05 23:55:07,875 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 23:55:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-05 23:55:07,877 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-05 23:55:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:07,877 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-05 23:55:07,877 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 23:55:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-05 23:55:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:07,878 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:07,879 INFO L554 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 23:55:08,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:08,079 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash -272805476, now seen corresponding path program 31 times [2021-06-05 23:55:08,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:08,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410953196] [2021-06-05 23:55:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:08,106 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 23:55:08,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:08,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410953196] [2021-06-05 23:55:08,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410953196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:08,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256736919] [2021-06-05 23:55:08,107 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 23:55:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:08,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:08,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:08,185 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 23:55:08,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256736919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:08,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:08,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:55:08,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303407978] [2021-06-05 23:55:08,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:55:08,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:55:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:55:08,187 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 23:55:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:08,426 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-05 23:55:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 23:55:08,427 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 23:55:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:08,429 INFO L225 Difference]: With dead ends: 1963 [2021-06-05 23:55:08,429 INFO L226 Difference]: Without dead ends: 1959 [2021-06-05 23:55:08,429 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 147.1ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-05 23:55:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-05 23:55:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-05 23:55:08,444 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 23:55:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-05 23:55:08,445 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-05 23:55:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:08,445 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-05 23:55:08,446 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 23:55:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-05 23:55:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:08,447 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:08,447 INFO L554 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 23:55:08,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-06-05 23:55:08,663 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1787897448, now seen corresponding path program 32 times [2021-06-05 23:55:08,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:08,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413666822] [2021-06-05 23:55:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:08,691 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 23:55:08,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:08,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413666822] [2021-06-05 23:55:08,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413666822] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:08,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692985971] [2021-06-05 23:55:08,691 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 23:55:08,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:55:08,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:08,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:08,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:08,766 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 23:55:08,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692985971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:08,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:08,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 23:55:08,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443451444] [2021-06-05 23:55:08,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 23:55:08,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 23:55:08,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 23:55:08,767 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 23:55:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:08,952 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-05 23:55:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:55:08,952 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 23:55:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:08,954 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 23:55:08,955 INFO L226 Difference]: Without dead ends: 1716 [2021-06-05 23:55:08,955 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 23:55:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-05 23:55:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-05 23:55:08,967 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 23:55:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-05 23:55:08,969 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-05 23:55:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:08,969 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-05 23:55:08,969 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 23:55:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-05 23:55:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:08,970 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:08,970 INFO L554 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 23:55:09,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:09,185 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:09,185 INFO L82 PathProgramCache]: Analyzing trace with hash -190770732, now seen corresponding path program 33 times [2021-06-05 23:55:09,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:09,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237978318] [2021-06-05 23:55:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:09,215 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 23:55:09,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:09,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237978318] [2021-06-05 23:55:09,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237978318] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:09,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238316041] [2021-06-05 23:55:09,216 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 23:55:09,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:55:09,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:09,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:09,303 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 23:55:09,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238316041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:09,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:09,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:55:09,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547499423] [2021-06-05 23:55:09,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:55:09,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:09,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:55:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:55:09,304 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 23:55:09,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:09,593 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-05 23:55:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 23:55:09,593 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 23:55:09,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:09,595 INFO L225 Difference]: With dead ends: 1821 [2021-06-05 23:55:09,595 INFO L226 Difference]: Without dead ends: 1821 [2021-06-05 23:55:09,596 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 183.7ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 23:55:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-05 23:55:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-05 23:55:09,609 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 23:55:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-05 23:55:09,611 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-05 23:55:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:09,611 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-05 23:55:09,611 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 23:55:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-05 23:55:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:09,613 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:09,613 INFO L554 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 23:55:09,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-06-05 23:55:09,814 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:09,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:09,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1452268422, now seen corresponding path program 34 times [2021-06-05 23:55:09,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:09,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447012091] [2021-06-05 23:55:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:09,846 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 23:55:09,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:09,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447012091] [2021-06-05 23:55:09,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447012091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:09,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419385506] [2021-06-05 23:55:09,847 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 23:55:09,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:55:09,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:09,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:09,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:09,936 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 23:55:09,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419385506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:09,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:09,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 23:55:09,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959814048] [2021-06-05 23:55:09,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 23:55:09,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 23:55:09,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 23:55:09,937 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 23:55:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:10,175 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-05 23:55:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 23:55:10,176 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 23:55:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:10,178 INFO L225 Difference]: With dead ends: 1790 [2021-06-05 23:55:10,178 INFO L226 Difference]: Without dead ends: 1786 [2021-06-05 23:55:10,178 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 158.0ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-05 23:55:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-05 23:55:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-05 23:55:10,191 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 23:55:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-05 23:55:10,193 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-05 23:55:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:10,193 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-05 23:55:10,193 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 23:55:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-05 23:55:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 23:55:10,195 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:10,195 INFO L554 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 23:55:10,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-05 23:55:10,411 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:10,411 INFO L82 PathProgramCache]: Analyzing trace with hash 184811244, now seen corresponding path program 35 times [2021-06-05 23:55:10,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:10,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994111462] [2021-06-05 23:55:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:10,438 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 23:55:10,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:10,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994111462] [2021-06-05 23:55:10,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994111462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:10,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951728061] [2021-06-05 23:55:10,439 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 23:55:10,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:55:10,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:10,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 23:55:10,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:10,517 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 23:55:10,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951728061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:10,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:10,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 23:55:10,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412890298] [2021-06-05 23:55:10,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 23:55:10,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:10,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 23:55:10,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 23:55:10,519 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 23:55:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:10,651 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-05 23:55:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:55:10,651 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 23:55:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:10,654 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 23:55:10,654 INFO L226 Difference]: Without dead ends: 1637 [2021-06-05 23:55:10,654 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:55:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-05 23:55:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-05 23:55:10,666 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 23:55:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-05 23:55:10,668 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-05 23:55:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:10,668 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-05 23:55:10,668 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 23:55:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-05 23:55:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:10,670 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:10,670 INFO L554 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 23:55:10,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:10,870 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:10,871 INFO L82 PathProgramCache]: Analyzing trace with hash -998684486, now seen corresponding path program 4 times [2021-06-05 23:55:10,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:10,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118469500] [2021-06-05 23:55:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:11,448 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 23:55:11,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:11,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118469500] [2021-06-05 23:55:11,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118469500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:11,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623897440] [2021-06-05 23:55:11,448 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 23:55:11,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:55:11,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:11,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:55:11,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:11,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,863 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:11,869 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,875 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:11,880 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,886 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,892 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:11,898 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,909 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,915 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:55:11,916 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:11,921 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,926 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,931 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,938 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:11,942 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:11,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:11,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:11,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:11,946 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:12,010 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 23:55:12,011 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 23:55:12,012 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 23:55:12,063 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 23:55:12,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623897440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:12,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:12,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:55:12,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062623356] [2021-06-05 23:55:12,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:55:12,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:55:12,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:55:12,064 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 23:55:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:12,849 INFO L93 Difference]: Finished difference Result 1531 states and 5001 transitions. [2021-06-05 23:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:55:12,849 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 23:55:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:12,851 INFO L225 Difference]: With dead ends: 1531 [2021-06-05 23:55:12,851 INFO L226 Difference]: Without dead ends: 1516 [2021-06-05 23:55:12,851 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1152.3ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:55:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-06-05 23:55:12,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1141. [2021-06-05 23:55:12,862 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 23:55:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-05 23:55:12,864 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-05 23:55:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:12,864 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-05 23:55:12,864 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 23:55:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-05 23:55:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:12,866 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:12,866 INFO L554 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 23:55:13,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-05 23:55:13,072 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1267884794, now seen corresponding path program 5 times [2021-06-05 23:55:13,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:13,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879650771] [2021-06-05 23:55:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:13,619 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 23:55:13,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:13,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879650771] [2021-06-05 23:55:13,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879650771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:13,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46987007] [2021-06-05 23:55:13,620 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 23:55:13,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:55:13,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:13,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:55:13,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:14,027 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-05 23:55:14,085 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_3], 2=[A, v_prenex_5]} [2021-06-05 23:55:14,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:14,090 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 23:55:14,091 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:14,197 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 23:55:14,204 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 23:55:14,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:14,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:14,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:14,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:14,211 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:14,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:14,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:14,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:14,216 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:14,252 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:14,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:14,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:14,257 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:14,293 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:14,295 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 23:55:14,295 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 23:55:14,357 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 23:55:14,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46987007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:14,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:14,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:55:14,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332608849] [2021-06-05 23:55:14,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:55:14,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:14,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:55:14,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:55:14,358 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 23:55:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:15,212 INFO L93 Difference]: Finished difference Result 1509 states and 4945 transitions. [2021-06-05 23:55:15,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:55:15,212 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 23:55:15,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:15,214 INFO L225 Difference]: With dead ends: 1509 [2021-06-05 23:55:15,214 INFO L226 Difference]: Without dead ends: 1494 [2021-06-05 23:55:15,214 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1254.8ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:55:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-06-05 23:55:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1150. [2021-06-05 23:55:15,226 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 23:55:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3857 transitions. [2021-06-05 23:55:15,228 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3857 transitions. Word has length 26 [2021-06-05 23:55:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:15,228 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 3857 transitions. [2021-06-05 23:55:15,228 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 23:55:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3857 transitions. [2021-06-05 23:55:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:15,229 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:15,229 INFO L554 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 23:55:15,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:15,442 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:15,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1435653194, now seen corresponding path program 36 times [2021-06-05 23:55:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:15,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914403933] [2021-06-05 23:55:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:15,857 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 23:55:15,995 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-05 23:55:16,121 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 23:55:16,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:16,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914403933] [2021-06-05 23:55:16,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914403933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:16,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148500951] [2021-06-05 23:55:16,122 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 23:55:16,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:55:16,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:16,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:55:16,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:16,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,657 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,665 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,674 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,686 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,696 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,703 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,711 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,719 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,727 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:16,735 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,742 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,753 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:16,761 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:16,768 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:16,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:16,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:16,773 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:16,795 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-05 23:55:16,796 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 23:55:16,797 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 23:55:16,826 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 23:55:16,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148500951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:16,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:16,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 23:55:16,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026634644] [2021-06-05 23:55:16,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:55:16,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:16,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:55:16,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:55:16,827 INFO L87 Difference]: Start difference. First operand 1150 states and 3857 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 23:55:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:18,410 INFO L93 Difference]: Finished difference Result 1607 states and 5192 transitions. [2021-06-05 23:55:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 23:55:18,410 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 23:55:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:18,412 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 23:55:18,412 INFO L226 Difference]: Without dead ends: 1592 [2021-06-05 23:55:18,413 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1920.1ms TimeCoverageRelationStatistics Valid=247, Invalid=1159, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 23:55:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-05 23:55:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1180. [2021-06-05 23:55:18,425 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 23:55:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3939 transitions. [2021-06-05 23:55:18,427 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3939 transitions. Word has length 26 [2021-06-05 23:55:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:18,427 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3939 transitions. [2021-06-05 23:55:18,427 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 23:55:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3939 transitions. [2021-06-05 23:55:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:18,429 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:18,429 INFO L554 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 23:55:18,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-06-05 23:55:18,630 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:18,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:18,630 INFO L82 PathProgramCache]: Analyzing trace with hash -630606018, now seen corresponding path program 6 times [2021-06-05 23:55:18,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:18,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671222496] [2021-06-05 23:55:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:19,010 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-06-05 23:55:19,204 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2021-06-05 23:55:19,426 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 23:55:19,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:19,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671222496] [2021-06-05 23:55:19,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671222496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:19,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358531630] [2021-06-05 23:55:19,426 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 23:55:19,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:55:19,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:19,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:55:19,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:19,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,685 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,685 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 40 treesize of output 22 [2021-06-05 23:55:19,686 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,697 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:19,697 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 43 treesize of output 31 [2021-06-05 23:55:19,699 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,710 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:19,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2021-06-05 23:55:19,714 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,726 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:19,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:19,727 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,738 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:19,738 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 23:55:19,740 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,749 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,750 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 45 treesize of output 25 [2021-06-05 23:55:19,750 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,760 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 27 [2021-06-05 23:55:19,760 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,770 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 30 [2021-06-05 23:55:19,771 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,780 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,780 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 40 treesize of output 24 [2021-06-05 23:55:19,781 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,790 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,790 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 45 treesize of output 27 [2021-06-05 23:55:19,791 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,800 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,800 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 47 treesize of output 25 [2021-06-05 23:55:19,801 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:19,812 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 24 treesize of output 24 [2021-06-05 23:55:19,816 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,828 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:19,828 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 23:55:19,830 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,842 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:19,842 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 38 treesize of output 24 [2021-06-05 23:55:19,843 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,854 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:19,854 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 45 treesize of output 31 [2021-06-05 23:55:19,857 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:19,863 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:19,863 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 42 treesize of output 22 [2021-06-05 23:55:19,863 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:19,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:19,943 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:55:19,943 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:865, output treesize:221 [2021-06-05 23:55:20,152 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 23:55:20,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358531630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:20,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:20,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:55:20,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155531005] [2021-06-05 23:55:20,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:55:20,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:20,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:55:20,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:55:20,153 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 23:55:21,093 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-06-05 23:55:21,460 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-06-05 23:55:21,609 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 23:55:21,856 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2021-06-05 23:55:22,000 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-06-05 23:55:22,239 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2021-06-05 23:55:22,395 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 23:55:22,898 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-06-05 23:55:23,141 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2021-06-05 23:55:23,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:23,234 INFO L93 Difference]: Finished difference Result 1843 states and 5867 transitions. [2021-06-05 23:55:23,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 23:55:23,234 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 23:55:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:23,236 INFO L225 Difference]: With dead ends: 1843 [2021-06-05 23:55:23,237 INFO L226 Difference]: Without dead ends: 1828 [2021-06-05 23:55:23,237 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 3445.6ms TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 23:55:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-06-05 23:55:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1198. [2021-06-05 23:55:23,250 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 23:55:23,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4006 transitions. [2021-06-05 23:55:23,252 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4006 transitions. Word has length 26 [2021-06-05 23:55:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:23,252 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 4006 transitions. [2021-06-05 23:55:23,252 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 23:55:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4006 transitions. [2021-06-05 23:55:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:23,254 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:23,254 INFO L554 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 23:55:23,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:23,469 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:23,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:23,469 INFO L82 PathProgramCache]: Analyzing trace with hash 919775546, now seen corresponding path program 37 times [2021-06-05 23:55:23,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:23,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766494580] [2021-06-05 23:55:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:23,849 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2021-06-05 23:55:24,011 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 23:55:24,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:24,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766494580] [2021-06-05 23:55:24,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766494580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:24,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140377152] [2021-06-05 23:55:24,011 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 23:55:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:24,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:55:24,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:24,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:24,526 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:24,534 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,541 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,550 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,558 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,565 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 23:55:24,566 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,575 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,584 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,591 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,599 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,607 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,615 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,622 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,630 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:24,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:24,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:24,635 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:24,657 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-05 23:55:24,658 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 23:55:24,658 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 23:55:24,687 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 23:55:24,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140377152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:24,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:24,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 23:55:24,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011939973] [2021-06-05 23:55:24,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:55:24,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:24,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:55:24,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:55:24,688 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 23:55:26,135 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2021-06-05 23:55:26,256 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2021-06-05 23:55:26,733 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2021-06-05 23:55:27,142 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2021-06-05 23:55:27,590 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-05 23:55:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:27,874 INFO L93 Difference]: Finished difference Result 1877 states and 5988 transitions. [2021-06-05 23:55:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 23:55:27,874 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 23:55:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:27,876 INFO L225 Difference]: With dead ends: 1877 [2021-06-05 23:55:27,877 INFO L226 Difference]: Without dead ends: 1862 [2021-06-05 23:55:27,877 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 3295.7ms TimeCoverageRelationStatistics Valid=480, Invalid=2276, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 23:55:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-06-05 23:55:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1206. [2021-06-05 23:55:27,890 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 23:55:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 4036 transitions. [2021-06-05 23:55:27,892 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 4036 transitions. Word has length 26 [2021-06-05 23:55:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:27,892 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 4036 transitions. [2021-06-05 23:55:27,892 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 23:55:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 4036 transitions. [2021-06-05 23:55:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:27,893 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:27,893 INFO L554 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 23:55:28,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:28,094 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:28,094 INFO L82 PathProgramCache]: Analyzing trace with hash -56543298, now seen corresponding path program 38 times [2021-06-05 23:55:28,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:28,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578115788] [2021-06-05 23:55:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:28,614 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 23:55:28,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:28,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578115788] [2021-06-05 23:55:28,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578115788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:28,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274184117] [2021-06-05 23:55:28,614 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 23:55:28,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:55:28,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:28,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:55:28,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:29,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,237 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-05 23:55:29,237 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 29 [2021-06-05 23:55:29,238 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,262 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-05 23:55:29,263 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 23:55:29,267 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,294 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 23:55:29,294 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 41 treesize of output 31 [2021-06-05 23:55:29,299 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,331 INFO L354 Elim1Store]: treesize reduction 9, result has 66.7 percent of original size [2021-06-05 23:55:29,331 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 33 treesize of output 36 [2021-06-05 23:55:29,335 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,351 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:29,352 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,367 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,367 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 23:55:29,368 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,391 INFO L354 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2021-06-05 23:55:29,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 22 [2021-06-05 23:55:29,392 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,411 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,411 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 23:55:29,411 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,437 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 23:55:29,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:29,441 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,456 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,456 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 23:55:29,457 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,472 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,473 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 23:55:29,473 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,497 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 23:55:29,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:29,498 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,520 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:29,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:29,528 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,544 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,544 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 23:55:29,545 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,558 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:29,559 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:29,567 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 23:55:29,567 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 23:55:29,567 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:29,675 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2021-06-05 23:55:29,676 INFO L628 ElimStorePlain]: treesize reduction 94, result has 58.6 percent of original size [2021-06-05 23:55:29,678 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 23:55:29,678 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:148 [2021-06-05 23:55:29,829 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 23:55:29,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274184117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:29,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:29,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 23:55:29,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420475614] [2021-06-05 23:55:29,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 23:55:29,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:29,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 23:55:29,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-06-05 23:55:29,830 INFO L87 Difference]: Start difference. First operand 1206 states and 4036 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 23:55:31,457 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2021-06-05 23:55:31,584 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2021-06-05 23:55:31,894 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2021-06-05 23:55:32,393 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-06-05 23:55:32,528 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-06-05 23:55:32,659 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-06-05 23:55:32,974 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 23:55:33,265 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-06-05 23:55:33,424 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2021-06-05 23:55:33,668 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-05 23:55:33,931 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-05 23:55:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:34,165 INFO L93 Difference]: Finished difference Result 2051 states and 6324 transitions. [2021-06-05 23:55:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 23:55:34,165 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 23:55:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:34,167 INFO L225 Difference]: With dead ends: 2051 [2021-06-05 23:55:34,168 INFO L226 Difference]: Without dead ends: 2006 [2021-06-05 23:55:34,168 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 4466.6ms TimeCoverageRelationStatistics Valid=531, Invalid=3129, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 23:55:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-06-05 23:55:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1381. [2021-06-05 23:55:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 3.318840579710145) internal successors, (4580), 1380 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:55:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 4580 transitions. [2021-06-05 23:55:34,185 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 4580 transitions. Word has length 26 [2021-06-05 23:55:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:34,185 INFO L482 AbstractCegarLoop]: Abstraction has 1381 states and 4580 transitions. [2021-06-05 23:55:34,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 23:55:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 4580 transitions. [2021-06-05 23:55:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:34,186 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:34,187 INFO L554 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 23:55:34,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2021-06-05 23:55:34,387 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2141610526, now seen corresponding path program 7 times [2021-06-05 23:55:34,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:34,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766314541] [2021-06-05 23:55:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:34,902 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 23:55:34,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:34,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766314541] [2021-06-05 23:55:34,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766314541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:34,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606833357] [2021-06-05 23:55:34,902 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 23:55:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:34,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:55:34,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:35,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,282 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,287 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,293 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,299 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,305 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,310 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,316 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,321 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,327 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,331 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 23:55:35,331 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,338 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,344 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,351 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 33 treesize of output 19 [2021-06-05 23:55:35,352 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:35,358 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:35,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:35,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:35,361 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:35,434 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 23:55:35,436 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 23:55:35,436 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 23:55:35,485 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 23:55:35,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606833357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:35,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:35,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:55:35,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443378613] [2021-06-05 23:55:35,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:55:35,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:35,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:55:35,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:55:35,486 INFO L87 Difference]: Start difference. First operand 1381 states and 4580 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 23:55:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:37,278 INFO L93 Difference]: Finished difference Result 1960 states and 6315 transitions. [2021-06-05 23:55:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 23:55:37,278 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 23:55:37,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:37,280 INFO L225 Difference]: With dead ends: 1960 [2021-06-05 23:55:37,281 INFO L226 Difference]: Without dead ends: 1945 [2021-06-05 23:55:37,281 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 2039.6ms TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 23:55:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2021-06-05 23:55:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1425. [2021-06-05 23:55:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 3.3202247191011236) internal successors, (4728), 1424 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:55:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 4728 transitions. [2021-06-05 23:55:37,299 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 4728 transitions. Word has length 26 [2021-06-05 23:55:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:37,299 INFO L482 AbstractCegarLoop]: Abstraction has 1425 states and 4728 transitions. [2021-06-05 23:55:37,299 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 23:55:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 4728 transitions. [2021-06-05 23:55:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:37,301 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:37,301 INFO L554 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 23:55:37,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:37,516 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:37,516 INFO L82 PathProgramCache]: Analyzing trace with hash 124958754, now seen corresponding path program 8 times [2021-06-05 23:55:37,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:37,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568713526] [2021-06-05 23:55:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:37,998 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 23:55:37,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:37,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568713526] [2021-06-05 23:55:37,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568713526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:37,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742901618] [2021-06-05 23:55:37,998 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 23:55:38,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:55:38,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:38,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:55:38,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:38,375 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 23:55:38,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:38,446 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:38,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:38,448 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:38,581 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-05 23:55:38,581 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:38,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:38,603 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:55:38,603 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-06-05 23:55:38,629 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:38,758 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-05 23:55:38,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:38,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:38,781 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:55:38,781 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-06-05 23:55:38,782 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:38,913 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 23:55:38,913 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:38,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:38,935 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:55:38,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:38,940 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:39,065 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 23:55:39,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:39,082 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:39,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:39,104 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:39,228 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 23:55:39,229 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:39,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:39,244 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:39,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:39,246 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:39,374 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 23:55:39,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:39,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:39,391 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 23:55:39,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:39,393 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:39,510 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 23:55:39,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:39,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:39,528 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 23:55:39,528 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 29 treesize of output 29 [2021-06-05 23:55:39,529 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:39,643 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 23:55:39,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:39,662 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 23:55:39,663 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:445, output treesize:479 [2021-06-05 23:55:39,907 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-06-05 23:55:40,104 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-06-05 23:55:40,211 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 23:55:40,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742901618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:40,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:40,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:55:40,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758526607] [2021-06-05 23:55:40,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:55:40,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:40,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:55:40,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:55:40,213 INFO L87 Difference]: Start difference. First operand 1425 states and 4728 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 23:55:41,216 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2021-06-05 23:55:41,567 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2021-06-05 23:55:41,933 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 56 [2021-06-05 23:55:42,227 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2021-06-05 23:55:42,561 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 23:55:43,008 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-05 23:55:43,390 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-06-05 23:55:43,525 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-05 23:55:43,837 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2021-06-05 23:55:44,155 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 23:55:44,588 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-06-05 23:55:44,896 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44 [2021-06-05 23:55:45,427 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-06-05 23:55:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:45,493 INFO L93 Difference]: Finished difference Result 2026 states and 6474 transitions. [2021-06-05 23:55:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 23:55:45,494 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 23:55:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:45,496 INFO L225 Difference]: With dead ends: 2026 [2021-06-05 23:55:45,496 INFO L226 Difference]: Without dead ends: 2011 [2021-06-05 23:55:45,496 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 5692.0ms TimeCoverageRelationStatistics Valid=321, Invalid=1749, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 23:55:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2021-06-05 23:55:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1444. [2021-06-05 23:55:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.324324324324324) internal successors, (4797), 1443 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:55:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4797 transitions. [2021-06-05 23:55:45,514 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4797 transitions. Word has length 26 [2021-06-05 23:55:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:45,514 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4797 transitions. [2021-06-05 23:55:45,514 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 23:55:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4797 transitions. [2021-06-05 23:55:45,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:45,516 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:45,516 INFO L554 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 23:55:45,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable451 [2021-06-05 23:55:45,717 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:45,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1506197498, now seen corresponding path program 9 times [2021-06-05 23:55:45,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:45,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090761077] [2021-06-05 23:55:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:46,154 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 23:55:46,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:46,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090761077] [2021-06-05 23:55:46,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090761077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:46,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083075113] [2021-06-05 23:55:46,155 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 23:55:46,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:55:46,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:46,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:55:46,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:46,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:46,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:46,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:46,734 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:46,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:46,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:46,741 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:46,871 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-06-05 23:55:46,871 INFO L628 ElimStorePlain]: treesize reduction 93, result has 59.6 percent of original size [2021-06-05 23:55:46,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:46,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:46,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:46,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:46,877 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:46,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:46,881 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 23:55:46,882 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:46,923 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:46,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:46,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:46,928 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:46,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:46,965 INFO L518 ElimStorePlain]: Eliminatee v_prenex_26 vanished before elimination [2021-06-05 23:55:46,967 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 23:55:46,967 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:285, output treesize:51 [2021-06-05 23:55:47,019 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 23:55:47,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083075113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:47,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:47,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:55:47,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144268472] [2021-06-05 23:55:47,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:55:47,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:47,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:55:47,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:55:47,020 INFO L87 Difference]: Start difference. First operand 1444 states and 4797 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 23:55:47,633 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2021-06-05 23:55:48,003 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-05 23:55:48,186 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2021-06-05 23:55:48,543 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2021-06-05 23:55:48,827 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-05 23:55:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:48,893 INFO L93 Difference]: Finished difference Result 2027 states and 6512 transitions. [2021-06-05 23:55:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 23:55:48,893 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 23:55:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:48,895 INFO L225 Difference]: With dead ends: 2027 [2021-06-05 23:55:48,895 INFO L226 Difference]: Without dead ends: 2012 [2021-06-05 23:55:48,896 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2199.4ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 23:55:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2021-06-05 23:55:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1454. [2021-06-05 23:55:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 3.3269098417068137) internal successors, (4834), 1453 states have internal predecessors, (4834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:55:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 4834 transitions. [2021-06-05 23:55:48,913 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 4834 transitions. Word has length 26 [2021-06-05 23:55:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:48,913 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 4834 transitions. [2021-06-05 23:55:48,913 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 23:55:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 4834 transitions. [2021-06-05 23:55:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:48,915 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:48,915 INFO L554 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 23:55:49,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:55:49,115 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:49,116 INFO L82 PathProgramCache]: Analyzing trace with hash 247191222, now seen corresponding path program 10 times [2021-06-05 23:55:49,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:49,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299107139] [2021-06-05 23:55:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:49,538 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 23:55:49,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:49,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299107139] [2021-06-05 23:55:49,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299107139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:49,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855182984] [2021-06-05 23:55:49,538 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 23:55:49,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:55:49,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:49,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:55:49,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:49,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,813 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,813 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 23:55:49,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:49,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:49,828 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,841 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:49,842 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,856 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:49,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:49,857 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,867 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:49,867 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:49,880 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 23:55:49,881 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,892 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:49,893 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,908 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:49,908 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 23:55:49,912 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:49,926 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 23:55:49,930 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,943 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:55:49,944 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,955 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,955 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 23:55:49,956 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,967 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,967 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 23:55:49,968 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,980 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:49,980 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 23:55:49,982 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,991 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:55:49,991 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 23:55:49,992 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:49,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:49,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:49,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:50,004 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:50,004 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 23:55:50,005 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:50,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:50,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:50,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:50,013 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:50,013 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 23:55:50,014 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:50,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:50,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:55:50,080 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 23:55:50,270 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 23:55:50,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855182984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:50,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:50,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:55:50,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115328492] [2021-06-05 23:55:50,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:55:50,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:50,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:55:50,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:55:50,271 INFO L87 Difference]: Start difference. First operand 1454 states and 4834 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 23:55:52,091 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-06-05 23:55:52,355 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-06-05 23:55:52,567 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-06-05 23:55:52,783 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-06-05 23:55:52,914 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 23:55:53,106 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2021-06-05 23:55:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:53,224 INFO L93 Difference]: Finished difference Result 2385 states and 7601 transitions. [2021-06-05 23:55:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 23:55:53,225 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 23:55:53,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:53,227 INFO L225 Difference]: With dead ends: 2385 [2021-06-05 23:55:53,227 INFO L226 Difference]: Without dead ends: 2355 [2021-06-05 23:55:53,228 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 3036.4ms TimeCoverageRelationStatistics Valid=381, Invalid=1781, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 23:55:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-06-05 23:55:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1467. [2021-06-05 23:55:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1466 states have (on average 3.3342428376534787) internal successors, (4888), 1466 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:55:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 4888 transitions. [2021-06-05 23:55:53,247 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 4888 transitions. Word has length 26 [2021-06-05 23:55:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:53,247 INFO L482 AbstractCegarLoop]: Abstraction has 1467 states and 4888 transitions. [2021-06-05 23:55:53,247 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 23:55:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 4888 transitions. [2021-06-05 23:55:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:53,249 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:53,249 INFO L554 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 23:55:53,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable499 [2021-06-05 23:55:53,453 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:53,464 INFO L82 PathProgramCache]: Analyzing trace with hash 317421942, now seen corresponding path program 11 times [2021-06-05 23:55:53,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:53,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937346512] [2021-06-05 23:55:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:53,935 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 23:55:53,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:53,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937346512] [2021-06-05 23:55:53,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937346512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:53,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331249883] [2021-06-05 23:55:53,935 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 23:55:53,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:55:53,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:53,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:55:53,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:54,305 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 23:55:54,495 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 51 [2021-06-05 23:55:54,561 INFO L446 ElimStorePlain]: Different costs {1=[A, v_prenex_37], 2=[v_prenex_39, v_prenex_38]} [2021-06-05 23:55:54,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:54,565 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 23:55:54,566 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:54,664 INFO L628 ElimStorePlain]: treesize reduction 54, result has 72.0 percent of original size [2021-06-05 23:55:54,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:54,668 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 23:55:54,669 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:54,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:54,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:54,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:54,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:54,729 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:54,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:54,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:54,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:54,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:54,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:54,775 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:54,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:54,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:55:54,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:55:54,779 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:54,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:54,811 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 23:55:54,811 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:205, output treesize:51 [2021-06-05 23:55:54,865 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 23:55:54,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331249883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:54,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:54,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:55:54,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390553278] [2021-06-05 23:55:54,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:55:54,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:54,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:55:54,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:55:54,866 INFO L87 Difference]: Start difference. First operand 1467 states and 4888 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 23:55:55,416 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-06-05 23:55:55,620 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-06-05 23:55:55,926 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2021-06-05 23:55:56,157 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-05 23:55:56,605 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-06-05 23:55:56,966 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-06-05 23:55:57,151 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-06-05 23:55:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:55:57,293 INFO L93 Difference]: Finished difference Result 1957 states and 6396 transitions. [2021-06-05 23:55:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 23:55:57,293 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 23:55:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:55:57,295 INFO L225 Difference]: With dead ends: 1957 [2021-06-05 23:55:57,295 INFO L226 Difference]: Without dead ends: 1942 [2021-06-05 23:55:57,296 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2808.6ms TimeCoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 23:55:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-06-05 23:55:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1470. [2021-06-05 23:55:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.3356024506466984) internal successors, (4900), 1469 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:55:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4900 transitions. [2021-06-05 23:55:57,320 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4900 transitions. Word has length 26 [2021-06-05 23:55:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:55:57,320 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4900 transitions. [2021-06-05 23:55:57,320 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 23:55:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4900 transitions. [2021-06-05 23:55:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:55:57,322 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:55:57,322 INFO L554 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 23:55:57,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable524 [2021-06-05 23:55:57,522 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:55:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:55:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1300110838, now seen corresponding path program 12 times [2021-06-05 23:55:57,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:55:57,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231062657] [2021-06-05 23:55:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:55:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:55:57,791 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-06-05 23:55:57,915 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-06-05 23:55:57,969 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 23:55:57,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:55:57,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231062657] [2021-06-05 23:55:57,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231062657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:57,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385337689] [2021-06-05 23:55:57,969 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 23:55:57,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:55:57,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:55:57,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:55:57,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:55:58,274 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-05 23:55:58,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:58,338 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:58,339 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 28 treesize of output 20 [2021-06-05 23:55:58,340 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:58,450 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 23:55:58,450 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:58,462 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:58,464 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:58,577 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 23:55:58,577 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:58,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,588 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 33 treesize of output 27 [2021-06-05 23:55:58,590 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:58,691 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 23:55:58,691 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:58,702 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:58,702 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 23:55:58,703 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:58,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:58,810 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:55:58,810 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 23:55:58,812 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:58,904 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:58,913 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:58,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:58,917 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:59,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:59,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:59,013 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:59,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:55:59,015 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:59,098 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:59,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:55:59,107 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:59,107 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 23:55:59,111 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:55:59,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:55:59,195 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 23:55:59,195 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 23:55:59,361 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 23:55:59,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385337689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:55:59,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:55:59,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:55:59,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125456758] [2021-06-05 23:55:59,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:55:59,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:55:59,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:55:59,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:55:59,362 INFO L87 Difference]: Start difference. First operand 1470 states and 4900 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 23:55:59,668 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2021-06-05 23:56:00,074 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2021-06-05 23:56:00,668 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 23:56:00,934 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-06-05 23:56:01,121 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-06-05 23:56:01,311 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2021-06-05 23:56:01,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:01,406 INFO L93 Difference]: Finished difference Result 2349 states and 7518 transitions. [2021-06-05 23:56:01,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 23:56:01,407 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 23:56:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:01,409 INFO L225 Difference]: With dead ends: 2349 [2021-06-05 23:56:01,410 INFO L226 Difference]: Without dead ends: 2319 [2021-06-05 23:56:01,410 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2249.8ms TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 23:56:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2021-06-05 23:56:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1476. [2021-06-05 23:56:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.3403389830508474) internal successors, (4927), 1475 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4927 transitions. [2021-06-05 23:56:01,428 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4927 transitions. Word has length 26 [2021-06-05 23:56:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:01,429 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 4927 transitions. [2021-06-05 23:56:01,429 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 23:56:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4927 transitions. [2021-06-05 23:56:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:01,430 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:01,430 INFO L554 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 23:56:01,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:01,631 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:01,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1219202938, now seen corresponding path program 39 times [2021-06-05 23:56:01,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:01,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513107176] [2021-06-05 23:56:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:01,976 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 23:56:01,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:01,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513107176] [2021-06-05 23:56:01,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513107176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:01,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603110105] [2021-06-05 23:56:01,977 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 23:56:02,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:56:02,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:02,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:56:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:02,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:02,310 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 7 [2021-06-05 23:56:02,320 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:02,329 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,337 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 34 treesize of output 16 [2021-06-05 23:56:02,337 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,345 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2021-06-05 23:56:02,346 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,356 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 38 treesize of output 16 [2021-06-05 23:56:02,356 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,365 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 41 treesize of output 19 [2021-06-05 23:56:02,365 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,373 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 45 treesize of output 19 [2021-06-05 23:56:02,374 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,382 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 38 treesize of output 16 [2021-06-05 23:56:02,383 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:02,404 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,412 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 47 treesize of output 16 [2021-06-05 23:56:02,413 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 13 [2021-06-05 23:56:02,421 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:02,431 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,438 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 34 treesize of output 13 [2021-06-05 23:56:02,440 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,447 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 34 treesize of output 13 [2021-06-05 23:56:02,447 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:02,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:02,451 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 23:56:02,452 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:02,498 INFO L628 ElimStorePlain]: treesize reduction 48, result has 49.5 percent of original size [2021-06-05 23:56:02,499 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 23:56:02,499 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:921, output treesize:47 [2021-06-05 23:56:02,569 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 23:56:02,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603110105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:02,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:02,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-06-05 23:56:02,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851526036] [2021-06-05 23:56:02,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 23:56:02,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:02,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 23:56:02,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-06-05 23:56:02,570 INFO L87 Difference]: Start difference. First operand 1476 states and 4927 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 20 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 23:56:03,087 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 23:56:03,502 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-05 23:56:03,664 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2021-06-05 23:56:04,206 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-06-05 23:56:04,609 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-05 23:56:04,823 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-06-05 23:56:05,356 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-06-05 23:56:06,015 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-06-05 23:56:06,177 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-06-05 23:56:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:06,452 INFO L93 Difference]: Finished difference Result 3196 states and 9983 transitions. [2021-06-05 23:56:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 23:56:06,453 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 20 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 23:56:06,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:06,457 INFO L225 Difference]: With dead ends: 3196 [2021-06-05 23:56:06,457 INFO L226 Difference]: Without dead ends: 3109 [2021-06-05 23:56:06,457 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 3640.4ms TimeCoverageRelationStatistics Valid=620, Invalid=3286, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 23:56:06,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-06-05 23:56:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 1509. [2021-06-05 23:56:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 3.343501326259947) internal successors, (5042), 1508 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 5042 transitions. [2021-06-05 23:56:06,480 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 5042 transitions. Word has length 26 [2021-06-05 23:56:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:06,480 INFO L482 AbstractCegarLoop]: Abstraction has 1509 states and 5042 transitions. [2021-06-05 23:56:06,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 20 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 23:56:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 5042 transitions. [2021-06-05 23:56:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:06,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:06,482 INFO L554 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 23:56:06,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable549 [2021-06-05 23:56:06,683 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:06,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:06,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1873451990, now seen corresponding path program 40 times [2021-06-05 23:56:06,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:06,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877961142] [2021-06-05 23:56:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:06,966 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-06-05 23:56:07,215 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 23:56:07,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:07,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877961142] [2021-06-05 23:56:07,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877961142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:07,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107021015] [2021-06-05 23:56:07,215 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 23:56:07,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:56:07,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:07,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:56:07,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:07,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,785 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,793 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,801 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,808 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 25 treesize of output 7 [2021-06-05 23:56:07,809 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,816 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 39 treesize of output 19 [2021-06-05 23:56:07,817 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,824 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 43 treesize of output 13 [2021-06-05 23:56:07,825 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,832 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 37 treesize of output 13 [2021-06-05 23:56:07,833 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,841 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 19 [2021-06-05 23:56:07,841 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,849 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,875 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 36 treesize of output 16 [2021-06-05 23:56:07,876 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,885 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,894 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,903 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:56:07,910 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,917 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:07,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:07,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:07,922 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:07,952 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-05 23:56:07,952 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 23:56:07,953 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:31 [2021-06-05 23:56:07,986 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 23:56:07,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107021015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:07,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:07,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 23:56:07,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742523658] [2021-06-05 23:56:07,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:56:07,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:07,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:56:07,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:56:07,987 INFO L87 Difference]: Start difference. First operand 1509 states and 5042 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 23:56:08,770 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-05 23:56:08,907 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2021-06-05 23:56:09,332 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 23:56:09,774 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-06-05 23:56:10,515 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2021-06-05 23:56:10,654 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-05 23:56:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:10,871 INFO L93 Difference]: Finished difference Result 2965 states and 9388 transitions. [2021-06-05 23:56:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 23:56:10,871 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 23:56:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:10,875 INFO L225 Difference]: With dead ends: 2965 [2021-06-05 23:56:10,875 INFO L226 Difference]: Without dead ends: 2920 [2021-06-05 23:56:10,875 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 2977.6ms TimeCoverageRelationStatistics Valid=535, Invalid=2435, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 23:56:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2021-06-05 23:56:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1512. [2021-06-05 23:56:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.345466578424884) internal successors, (5055), 1511 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5055 transitions. [2021-06-05 23:56:10,895 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5055 transitions. Word has length 26 [2021-06-05 23:56:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:10,896 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5055 transitions. [2021-06-05 23:56:10,896 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 23:56:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5055 transitions. [2021-06-05 23:56:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:10,898 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:10,898 INFO L554 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 23:56:11,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable568 [2021-06-05 23:56:11,098 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:11,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:11,098 INFO L82 PathProgramCache]: Analyzing trace with hash -39803338, now seen corresponding path program 41 times [2021-06-05 23:56:11,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:11,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232257550] [2021-06-05 23:56:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:11,489 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 23:56:11,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:11,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232257550] [2021-06-05 23:56:11,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232257550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:11,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740602465] [2021-06-05 23:56:11,489 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 23:56:11,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:56:11,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:11,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:56:11,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:11,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:11,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:11,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:11,987 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 23:56:11,987 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 30 [2021-06-05 23:56:11,989 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:11,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:11,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,014 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 23:56:12,014 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 23:56:12,017 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,039 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:12,040 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 23:56:12,045 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,068 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 23:56:12,068 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 30 [2021-06-05 23:56:12,070 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,085 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,085 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 23:56:12,086 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,108 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 23:56:12,109 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 23:56:12,110 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,132 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-05 23:56:12,132 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 23:56:12,133 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,149 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:56:12,150 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,164 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,164 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 23:56:12,164 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,179 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:56:12,180 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,195 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,195 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 23:56:12,195 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,217 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 23:56:12,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:56:12,219 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,233 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,233 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 23:56:12,234 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,248 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,248 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 23:56:12,249 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,263 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,263 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 23:56:12,264 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:12,274 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:56:12,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:56:12,275 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:12,369 INFO L628 ElimStorePlain]: treesize reduction 69, result has 64.2 percent of original size [2021-06-05 23:56:12,371 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 23:56:12,371 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133 [2021-06-05 23:56:12,507 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 23:56:12,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740602465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:12,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:12,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 23:56:12,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405694408] [2021-06-05 23:56:12,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:56:12,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:12,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:56:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:56:12,507 INFO L87 Difference]: Start difference. First operand 1512 states and 5055 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 23:56:12,942 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-05 23:56:13,435 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-06-05 23:56:13,645 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-06-05 23:56:14,138 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 23:56:14,354 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-06-05 23:56:14,694 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-06-05 23:56:15,161 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-06-05 23:56:15,625 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2021-06-05 23:56:15,856 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-06-05 23:56:16,006 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2021-06-05 23:56:16,237 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2021-06-05 23:56:16,447 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2021-06-05 23:56:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:16,998 INFO L93 Difference]: Finished difference Result 3428 states and 10667 transitions. [2021-06-05 23:56:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 23:56:16,999 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 23:56:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:17,003 INFO L225 Difference]: With dead ends: 3428 [2021-06-05 23:56:17,003 INFO L226 Difference]: Without dead ends: 3368 [2021-06-05 23:56:17,003 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 4211.6ms TimeCoverageRelationStatistics Valid=833, Invalid=3457, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 23:56:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2021-06-05 23:56:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1525. [2021-06-05 23:56:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 3.356299212598425) internal successors, (5115), 1524 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 5115 transitions. [2021-06-05 23:56:17,027 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 5115 transitions. Word has length 26 [2021-06-05 23:56:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:17,027 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 5115 transitions. [2021-06-05 23:56:17,027 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 23:56:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 5115 transitions. [2021-06-05 23:56:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:17,029 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:17,029 INFO L554 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 23:56:17,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable682 [2021-06-05 23:56:17,234 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:17,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1882815202, now seen corresponding path program 13 times [2021-06-05 23:56:17,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:17,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194390623] [2021-06-05 23:56:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:17,524 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2021-06-05 23:56:17,688 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-06-05 23:56:17,847 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-06-05 23:56:17,958 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 23:56:17,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:17,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194390623] [2021-06-05 23:56:17,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194390623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:17,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046534579] [2021-06-05 23:56:17,959 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 23:56:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:17,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:56:17,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:18,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:18,310 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:18,315 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:18,321 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:18,326 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,331 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 23:56:18,331 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:18,337 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:18,342 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:18,347 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,351 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 33 treesize of output 19 [2021-06-05 23:56:18,352 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:18,357 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:18,362 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:18,367 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:18,372 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:18,377 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:18,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:18,380 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 23:56:18,381 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:18,446 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 23:56:18,448 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 23:56:18,448 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 23:56:18,494 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 23:56:18,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046534579] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:18,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:18,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:56:18,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951801503] [2021-06-05 23:56:18,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:56:18,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:18,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:56:18,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:56:18,495 INFO L87 Difference]: Start difference. First operand 1525 states and 5115 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 23:56:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:19,298 INFO L93 Difference]: Finished difference Result 1908 states and 6274 transitions. [2021-06-05 23:56:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:56:19,299 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 23:56:19,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:19,301 INFO L225 Difference]: With dead ends: 1908 [2021-06-05 23:56:19,301 INFO L226 Difference]: Without dead ends: 1893 [2021-06-05 23:56:19,301 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1351.7ms TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-05 23:56:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2021-06-05 23:56:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1533. [2021-06-05 23:56:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 3.352480417754569) internal successors, (5136), 1532 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 5136 transitions. [2021-06-05 23:56:19,318 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 5136 transitions. Word has length 26 [2021-06-05 23:56:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:19,318 INFO L482 AbstractCegarLoop]: Abstraction has 1533 states and 5136 transitions. [2021-06-05 23:56:19,318 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 23:56:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 5136 transitions. [2021-06-05 23:56:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:19,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:19,320 INFO L554 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 23:56:19,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable795 [2021-06-05 23:56:19,520 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash 950706158, now seen corresponding path program 14 times [2021-06-05 23:56:19,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:19,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470326049] [2021-06-05 23:56:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:20,094 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 23:56:20,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:20,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470326049] [2021-06-05 23:56:20,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470326049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:20,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549134685] [2021-06-05 23:56:20,095 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 23:56:20,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:56:20,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:20,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:56:20,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:20,443 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 23:56:20,510 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_60, v_prenex_62], 3=[A, v_prenex_54, v_prenex_64, v_prenex_58, v_prenex_56, v_prenex_66]} [2021-06-05 23:56:20,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:20,528 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 33 treesize of output 35 [2021-06-05 23:56:20,529 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:20,675 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-06-05 23:56:20,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:20,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:20,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:20,696 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:20,834 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-05 23:56:20,834 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:20,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:20,854 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:56:20,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 25 treesize of output 27 [2021-06-05 23:56:20,858 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:20,992 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 23:56:20,992 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:20,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:21,012 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:56:21,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 30 [2021-06-05 23:56:21,016 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:21,141 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-05 23:56:21,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:21,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:21,160 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 23:56:21,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 32 treesize of output 26 [2021-06-05 23:56:21,161 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:21,284 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 23:56:21,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:21,299 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:21,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 18 treesize of output 28 [2021-06-05 23:56:21,303 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:21,430 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 23:56:21,431 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:21,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:21,447 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 23:56:21,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 23 [2021-06-05 23:56:21,448 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:21,566 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 23:56:21,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:21,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:21,585 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:56:21,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 30 [2021-06-05 23:56:21,586 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:21,706 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 23:56:21,706 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:21,720 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 23:56:21,720 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:391, output treesize:457 [2021-06-05 23:56:22,004 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-06-05 23:56:22,207 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-06-05 23:56:22,296 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 23:56:22,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549134685] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:22,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:22,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:56:22,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661802107] [2021-06-05 23:56:22,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:56:22,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:22,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:56:22,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:56:22,297 INFO L87 Difference]: Start difference. First operand 1533 states and 5136 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 23:56:22,525 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 21 [2021-06-05 23:56:23,213 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 45 [2021-06-05 23:56:23,612 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 23:56:24,144 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2021-06-05 23:56:24,312 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 23:56:24,705 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-06-05 23:56:25,109 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2021-06-05 23:56:25,434 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-05 23:56:25,650 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-06-05 23:56:26,099 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-06-05 23:56:26,310 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2021-06-05 23:56:26,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:26,363 INFO L93 Difference]: Finished difference Result 2211 states and 7083 transitions. [2021-06-05 23:56:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 23:56:26,364 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 23:56:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:26,366 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 23:56:26,366 INFO L226 Difference]: Without dead ends: 2181 [2021-06-05 23:56:26,366 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 4679.6ms TimeCoverageRelationStatistics Valid=256, Invalid=1384, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 23:56:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-06-05 23:56:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 1518. [2021-06-05 23:56:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.3513513513513513) internal successors, (5084), 1517 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 5084 transitions. [2021-06-05 23:56:26,386 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 5084 transitions. Word has length 26 [2021-06-05 23:56:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:26,386 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 5084 transitions. [2021-06-05 23:56:26,386 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 23:56:26,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 5084 transitions. [2021-06-05 23:56:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:26,388 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:26,388 INFO L554 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 23:56:26,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable825,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:26,602 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1721464722, now seen corresponding path program 15 times [2021-06-05 23:56:26,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:26,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939223818] [2021-06-05 23:56:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:26,815 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2021-06-05 23:56:27,071 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2021-06-05 23:56:27,231 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 23:56:27,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:27,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939223818] [2021-06-05 23:56:27,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939223818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:27,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503181596] [2021-06-05 23:56:27,231 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 23:56:27,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:56:27,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:27,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:56:27,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:27,562 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:27,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,574 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,575 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,593 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:56:27,593 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 23:56:27,594 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,613 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:56:27,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,614 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:27,630 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 23:56:27,645 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,662 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:27,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,664 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,673 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,673 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:56:27,674 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,683 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,684 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,692 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,692 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 16 [2021-06-05 23:56:27,693 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,710 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:27,710 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 28 treesize of output 28 [2021-06-05 23:56:27,713 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,730 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:27,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,737 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,745 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,746 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,754 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,754 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,763 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,763 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,771 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:27,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,771 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,785 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:27,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:27,786 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:27,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:27,913 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 23:56:27,913 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:737, output treesize:430 [2021-06-05 23:56:28,230 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-05 23:56:28,426 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 23:56:28,532 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 23:56:28,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503181596] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:28,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:28,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 23:56:28,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288062976] [2021-06-05 23:56:28,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:56:28,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:28,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:56:28,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:56:28,533 INFO L87 Difference]: Start difference. First operand 1518 states and 5084 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 23:56:29,153 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2021-06-05 23:56:29,501 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-06-05 23:56:29,671 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2021-06-05 23:56:29,839 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2021-06-05 23:56:30,068 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2021-06-05 23:56:30,215 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2021-06-05 23:56:30,411 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 23:56:30,880 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-06-05 23:56:31,121 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-05 23:56:31,388 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-06-05 23:56:31,594 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2021-06-05 23:56:31,875 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-05 23:56:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:31,940 INFO L93 Difference]: Finished difference Result 2207 states and 7076 transitions. [2021-06-05 23:56:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 23:56:31,941 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 23:56:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:31,943 INFO L225 Difference]: With dead ends: 2207 [2021-06-05 23:56:31,943 INFO L226 Difference]: Without dead ends: 2192 [2021-06-05 23:56:31,943 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 4041.3ms TimeCoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 23:56:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-06-05 23:56:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1522. [2021-06-05 23:56:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 3.356344510190664) internal successors, (5105), 1521 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 5105 transitions. [2021-06-05 23:56:31,962 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 5105 transitions. Word has length 26 [2021-06-05 23:56:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:31,962 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 5105 transitions. [2021-06-05 23:56:31,962 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 23:56:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 5105 transitions. [2021-06-05 23:56:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:31,964 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:31,964 INFO L554 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 23:56:32,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable856,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:32,173 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:32,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:32,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1741432748, now seen corresponding path program 16 times [2021-06-05 23:56:32,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:32,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853946260] [2021-06-05 23:56:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:32,576 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 23:56:32,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:32,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853946260] [2021-06-05 23:56:32,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853946260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:32,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670467216] [2021-06-05 23:56:32,576 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 23:56:32,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:56:32,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:32,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:56:32,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:32,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,847 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:32,847 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 23:56:32,849 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,859 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:32,859 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 23:56:32,860 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,870 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:32,870 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 23:56:32,873 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,895 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:32,895 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 23:56:32,896 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,904 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:32,905 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 23:56:32,905 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,913 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:32,913 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 23:56:32,914 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,921 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:32,921 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 31 treesize of output 19 [2021-06-05 23:56:32,922 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,929 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:32,929 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 28 treesize of output 16 [2021-06-05 23:56:32,930 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:32,940 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 23:56:32,943 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,953 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:56:32,953 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 21 treesize of output 17 [2021-06-05 23:56:32,954 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,964 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:56:32,965 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 23:56:32,966 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,973 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:32,973 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 23:56:32,974 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,983 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:56:32,983 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 21 treesize of output 17 [2021-06-05 23:56:32,985 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:32,993 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:32,993 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 23:56:32,994 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:32,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:33,001 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:33,001 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 23:56:33,001 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:33,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:33,006 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:33,006 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 23:56:33,007 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:33,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:33,102 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 23:56:33,102 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:705, output treesize:180 [2021-06-05 23:56:33,243 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-06-05 23:56:33,331 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 23:56:33,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670467216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:33,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:33,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 23:56:33,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597245660] [2021-06-05 23:56:33,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 23:56:33,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 23:56:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-05 23:56:33,332 INFO L87 Difference]: Start difference. First operand 1522 states and 5105 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 23:56:34,057 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-06-05 23:56:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:34,099 INFO L93 Difference]: Finished difference Result 2055 states and 6709 transitions. [2021-06-05 23:56:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:56:34,099 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 23:56:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:34,101 INFO L225 Difference]: With dead ends: 2055 [2021-06-05 23:56:34,101 INFO L226 Difference]: Without dead ends: 2040 [2021-06-05 23:56:34,102 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1144.5ms TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-06-05 23:56:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-06-05 23:56:34,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1529. [2021-06-05 23:56:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 3.356020942408377) internal successors, (5128), 1528 states have internal predecessors, (5128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:34,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5128 transitions. [2021-06-05 23:56:34,119 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5128 transitions. Word has length 26 [2021-06-05 23:56:34,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:34,120 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5128 transitions. [2021-06-05 23:56:34,120 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 23:56:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5128 transitions. [2021-06-05 23:56:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:34,122 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:34,122 INFO L554 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 23:56:34,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable911,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:34,322 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:34,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1484642536, now seen corresponding path program 17 times [2021-06-05 23:56:34,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:34,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717098337] [2021-06-05 23:56:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:34,733 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 23:56:34,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:34,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717098337] [2021-06-05 23:56:34,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717098337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:34,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219624520] [2021-06-05 23:56:34,734 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 23:56:34,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:56:34,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:34,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:56:34,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:35,064 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 23:56:35,273 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-06-05 23:56:35,343 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_76], 2=[A, v_prenex_75]} [2021-06-05 23:56:35,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:35,346 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 23:56:35,347 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:35,441 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 23:56:35,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:35,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:35,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:35,446 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:35,484 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:35,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:35,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:35,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:35,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:35,490 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:35,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:35,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:35,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:35,495 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:35,526 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:35,528 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 23:56:35,528 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 23:56:35,581 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 23:56:35,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219624520] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:35,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:35,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:56:35,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928336861] [2021-06-05 23:56:35,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:56:35,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:56:35,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:56:35,582 INFO L87 Difference]: Start difference. First operand 1529 states and 5128 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 23:56:36,653 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 23:56:36,972 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-06-05 23:56:37,141 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2021-06-05 23:56:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:37,281 INFO L93 Difference]: Finished difference Result 2067 states and 6781 transitions. [2021-06-05 23:56:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 23:56:37,282 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 23:56:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:37,284 INFO L225 Difference]: With dead ends: 2067 [2021-06-05 23:56:37,284 INFO L226 Difference]: Without dead ends: 2052 [2021-06-05 23:56:37,284 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2092.9ms TimeCoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 23:56:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2021-06-05 23:56:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1532. [2021-06-05 23:56:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.357282821685173) internal successors, (5140), 1531 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5140 transitions. [2021-06-05 23:56:37,304 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5140 transitions. Word has length 26 [2021-06-05 23:56:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:37,304 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5140 transitions. [2021-06-05 23:56:37,304 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 23:56:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5140 transitions. [2021-06-05 23:56:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:37,306 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:37,306 INFO L554 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 23:56:37,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable952 [2021-06-05 23:56:37,522 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:37,522 INFO L82 PathProgramCache]: Analyzing trace with hash -808425550, now seen corresponding path program 18 times [2021-06-05 23:56:37,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:37,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760557075] [2021-06-05 23:56:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:37,942 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 23:56:37,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:37,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760557075] [2021-06-05 23:56:37,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760557075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:37,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160859178] [2021-06-05 23:56:37,942 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 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 23:56:37,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:56:37,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:37,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:56:37,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:38,375 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 23:56:38,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:38,543 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:38,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:38,546 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:38,784 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2021-06-05 23:56:38,784 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.8 percent of original size [2021-06-05 23:56:38,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:38,810 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:38,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:38,812 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:38,933 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 23:56:38,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:38,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:38,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:38,956 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:39,074 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-05 23:56:39,074 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:39,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:39,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:39,099 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 32 [2021-06-05 23:56:39,104 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:39,323 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2021-06-05 23:56:39,323 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.1 percent of original size [2021-06-05 23:56:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:39,341 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:56:39,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:39,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:39,449 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 23:56:39,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:39,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:39,468 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:39,469 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 23:56:39,470 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:39,576 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 23:56:39,577 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:39,595 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:39,595 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 23:56:39,598 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:39,700 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 23:56:39,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:39,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:39,717 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:56:39,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:39,718 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:39,818 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 23:56:39,819 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:39,835 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 23:56:39,835 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:365, output treesize:256 [2021-06-05 23:56:40,009 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 23:56:40,099 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 23:56:40,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160859178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:40,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:40,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:56:40,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930183512] [2021-06-05 23:56:40,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:56:40,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:40,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:56:40,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:56:40,100 INFO L87 Difference]: Start difference. First operand 1532 states and 5140 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 23:56:40,736 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-06-05 23:56:41,000 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 23:56:41,545 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 122 [2021-06-05 23:56:41,783 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2021-06-05 23:56:42,119 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 23:56:42,633 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2021-06-05 23:56:42,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:42,694 INFO L93 Difference]: Finished difference Result 2080 states and 6806 transitions. [2021-06-05 23:56:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:56:42,695 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 23:56:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:42,697 INFO L225 Difference]: With dead ends: 2080 [2021-06-05 23:56:42,697 INFO L226 Difference]: Without dead ends: 2065 [2021-06-05 23:56:42,697 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3046.2ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 23:56:42,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-06-05 23:56:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1529. [2021-06-05 23:56:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 3.356020942408377) internal successors, (5128), 1528 states have internal predecessors, (5128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5128 transitions. [2021-06-05 23:56:42,715 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5128 transitions. Word has length 26 [2021-06-05 23:56:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:42,715 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5128 transitions. [2021-06-05 23:56:42,715 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 23:56:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5128 transitions. [2021-06-05 23:56:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:42,717 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:42,717 INFO L554 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 23:56:42,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable962,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:42,917 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:42,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2091148486, now seen corresponding path program 19 times [2021-06-05 23:56:42,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:42,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895194856] [2021-06-05 23:56:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:43,286 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 23:56:43,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:43,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895194856] [2021-06-05 23:56:43,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895194856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:43,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390407573] [2021-06-05 23:56:43,286 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 23:56:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:43,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:56:43,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:43,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,638 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,643 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 21 treesize of output 13 [2021-06-05 23:56:43,643 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,648 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 31 treesize of output 19 [2021-06-05 23:56:43,649 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,654 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 28 treesize of output 16 [2021-06-05 23:56:43,654 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,659 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 23:56:43,660 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,666 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,672 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,677 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,683 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:43,689 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,695 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,701 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,707 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,712 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:43,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:43,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:43,715 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:43,780 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 23:56:43,781 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 23:56:43,781 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 23:56:43,825 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 23:56:43,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390407573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:43,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:43,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:56:43,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049638860] [2021-06-05 23:56:43,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:56:43,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:43,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:56:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:56:43,826 INFO L87 Difference]: Start difference. First operand 1529 states and 5128 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 23:56:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:44,580 INFO L93 Difference]: Finished difference Result 1986 states and 6507 transitions. [2021-06-05 23:56:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 23:56:44,580 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 23:56:44,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:44,583 INFO L225 Difference]: With dead ends: 1986 [2021-06-05 23:56:44,583 INFO L226 Difference]: Without dead ends: 1965 [2021-06-05 23:56:44,583 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1032.4ms TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-06-05 23:56:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-06-05 23:56:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1570. [2021-06-05 23:56:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1569 states have (on average 3.3524537922243467) internal successors, (5260), 1569 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 5260 transitions. [2021-06-05 23:56:44,600 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 5260 transitions. Word has length 26 [2021-06-05 23:56:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:44,600 INFO L482 AbstractCegarLoop]: Abstraction has 1570 states and 5260 transitions. [2021-06-05 23:56:44,600 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 23:56:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 5260 transitions. [2021-06-05 23:56:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:44,602 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:44,602 INFO L554 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 23:56:44,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable994 [2021-06-05 23:56:44,803 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:44,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2036009718, now seen corresponding path program 20 times [2021-06-05 23:56:44,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:44,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333779234] [2021-06-05 23:56:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:45,192 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 23:56:45,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:45,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333779234] [2021-06-05 23:56:45,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333779234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:45,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841526983] [2021-06-05 23:56:45,192 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 23:56:45,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:56:45,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:45,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 23:56:45,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:45,509 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:45,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:45,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:45,534 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,542 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,543 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,558 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:56:45,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,560 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,578 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:45,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,592 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,600 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,600 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 23:56:45,601 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,619 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:45,619 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 23:56:45,620 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,628 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,628 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 23:56:45,629 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,644 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:56:45,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,645 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,663 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:56:45,663 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 23:56:45,666 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,674 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,675 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,682 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,683 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,691 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,692 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,706 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:45,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,708 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:45,721 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 33 treesize of output 35 [2021-06-05 23:56:45,722 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,727 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:56:45,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:45,727 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:45,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:45,834 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 23:56:45,834 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:737, output treesize:407 [2021-06-05 23:56:46,042 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-05 23:56:46,237 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 23:56:46,342 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 23:56:46,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841526983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:46,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:46,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 23:56:46,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379735544] [2021-06-05 23:56:46,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:56:46,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:46,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:56:46,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:56:46,343 INFO L87 Difference]: Start difference. First operand 1570 states and 5260 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 23:56:47,283 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2021-06-05 23:56:47,436 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 23:56:47,899 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-06-05 23:56:48,582 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2021-06-05 23:56:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:48,652 INFO L93 Difference]: Finished difference Result 2168 states and 6948 transitions. [2021-06-05 23:56:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 23:56:48,653 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 23:56:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:48,655 INFO L225 Difference]: With dead ends: 2168 [2021-06-05 23:56:48,655 INFO L226 Difference]: Without dead ends: 2143 [2021-06-05 23:56:48,655 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2741.9ms TimeCoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 23:56:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2021-06-05 23:56:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1584. [2021-06-05 23:56:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 3.360707517372078) internal successors, (5320), 1583 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 5320 transitions. [2021-06-05 23:56:48,675 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 5320 transitions. Word has length 26 [2021-06-05 23:56:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:48,675 INFO L482 AbstractCegarLoop]: Abstraction has 1584 states and 5320 transitions. [2021-06-05 23:56:48,675 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 23:56:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 5320 transitions. [2021-06-05 23:56:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:48,677 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:48,677 INFO L554 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 23:56:48,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1022 [2021-06-05 23:56:48,880 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2016041692, now seen corresponding path program 21 times [2021-06-05 23:56:48,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:48,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171337482] [2021-06-05 23:56:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:49,284 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 23:56:49,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:49,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171337482] [2021-06-05 23:56:49,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171337482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:49,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020444491] [2021-06-05 23:56:49,284 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 23:56:49,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:56:49,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:49,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:56:49,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:49,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,598 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:49,599 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,609 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:56:49,609 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 23:56:49,610 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,620 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:49,620 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 23:56:49,621 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,632 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:56:49,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:49,633 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,641 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:49,642 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,650 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,650 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 23:56:49,650 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,659 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:49,659 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:49,669 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 23:56:49,671 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,679 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:49,680 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,688 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:49,688 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:49,698 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 16 treesize of output 18 [2021-06-05 23:56:49,701 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,711 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:56:49,711 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 23:56:49,713 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:49,723 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 23:56:49,724 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:49,733 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 23:56:49,736 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,744 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,744 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 23:56:49,744 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:49,749 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:49,749 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 23:56:49,750 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:49,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:49,827 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 23:56:49,827 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 23:56:50,005 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 23:56:50,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020444491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:50,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:50,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 23:56:50,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209999315] [2021-06-05 23:56:50,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:56:50,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:50,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:56:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:56:50,006 INFO L87 Difference]: Start difference. First operand 1584 states and 5320 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 23:56:50,793 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-06-05 23:56:51,205 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2021-06-05 23:56:51,414 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-05 23:56:51,702 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-06-05 23:56:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:51,749 INFO L93 Difference]: Finished difference Result 2090 states and 6847 transitions. [2021-06-05 23:56:51,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:56:51,749 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 23:56:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:51,752 INFO L225 Difference]: With dead ends: 2090 [2021-06-05 23:56:51,752 INFO L226 Difference]: Without dead ends: 2061 [2021-06-05 23:56:51,752 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1990.9ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 23:56:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-06-05 23:56:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1587. [2021-06-05 23:56:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1586 states have (on average 3.3612862547288778) internal successors, (5331), 1586 states have internal predecessors, (5331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 5331 transitions. [2021-06-05 23:56:51,769 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 5331 transitions. Word has length 26 [2021-06-05 23:56:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:51,770 INFO L482 AbstractCegarLoop]: Abstraction has 1587 states and 5331 transitions. [2021-06-05 23:56:51,770 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 23:56:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 5331 transitions. [2021-06-05 23:56:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:51,772 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:51,772 INFO L554 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 23:56:51,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1071,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:51,972 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:51,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1960184130, now seen corresponding path program 22 times [2021-06-05 23:56:51,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:51,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879234302] [2021-06-05 23:56:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:52,474 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 23:56:52,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:52,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879234302] [2021-06-05 23:56:52,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879234302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:52,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903481778] [2021-06-05 23:56:52,475 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) [2021-06-05 23:56:52,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:56:52,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:52,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:56:52,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:52,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:52,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:52,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:52,772 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:52,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:52,776 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 33 treesize of output 19 [2021-06-05 23:56:52,777 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:52,867 INFO L628 ElimStorePlain]: treesize reduction 121, result has 46.0 percent of original size [2021-06-05 23:56:52,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:52,870 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 23:56:52,871 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:52,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:52,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:52,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:52,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:52,909 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:52,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:52,941 INFO L518 ElimStorePlain]: Eliminatee v_prenex_113 vanished before elimination [2021-06-05 23:56:52,943 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 23:56:52,943 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:264, output treesize:51 [2021-06-05 23:56:52,995 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 23:56:52,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903481778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:52,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:52,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 23:56:52,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19056441] [2021-06-05 23:56:52,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 23:56:52,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:52,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 23:56:52,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-05 23:56:52,996 INFO L87 Difference]: Start difference. First operand 1587 states and 5331 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 23:56:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:53,290 INFO L93 Difference]: Finished difference Result 1662 states and 5522 transitions. [2021-06-05 23:56:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 23:56:53,291 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 23:56:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:53,293 INFO L225 Difference]: With dead ends: 1662 [2021-06-05 23:56:53,293 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 23:56:53,294 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 693.8ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:56:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 23:56:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1593. [2021-06-05 23:56:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1592 states have (on average 3.363065326633166) internal successors, (5354), 1592 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 5354 transitions. [2021-06-05 23:56:53,310 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 5354 transitions. Word has length 26 [2021-06-05 23:56:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:53,310 INFO L482 AbstractCegarLoop]: Abstraction has 1593 states and 5354 transitions. [2021-06-05 23:56:53,310 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 23:56:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 5354 transitions. [2021-06-05 23:56:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:53,311 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:53,312 INFO L554 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 23:56:53,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1112,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:56:53,512 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:53,512 INFO L82 PathProgramCache]: Analyzing trace with hash -389358530, now seen corresponding path program 23 times [2021-06-05 23:56:53,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:53,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445999415] [2021-06-05 23:56:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:53,814 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 23:56:53,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:53,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445999415] [2021-06-05 23:56:53,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445999415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:53,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759539064] [2021-06-05 23:56:53,815 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 23:56:53,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:56:53,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:53,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:56:53,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:54,178 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_115, v_prenex_117], 3=[A, v_prenex_119]} [2021-06-05 23:56:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,191 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,191 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 23:56:54,193 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,202 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,202 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 23:56:54,203 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,326 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 23:56:54,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,338 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:56:54,339 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 21 treesize of output 17 [2021-06-05 23:56:54,340 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,349 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,349 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 24 [2021-06-05 23:56:54,350 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,468 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 23:56:54,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,482 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 23:56:54,482 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 25 treesize of output 19 [2021-06-05 23:56:54,483 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,493 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,493 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 23:56:54,496 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,599 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 23:56:54,599 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,611 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,611 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 23:56:54,615 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:54,624 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 23:56:54,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:56:54,625 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:54,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:54,735 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 23:56:54,736 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:349, output treesize:194 [2021-06-05 23:56:54,919 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 23:56:54,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759539064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:54,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:54,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:56:54,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665282657] [2021-06-05 23:56:54,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:56:54,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:54,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:56:54,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:56:54,920 INFO L87 Difference]: Start difference. First operand 1593 states and 5354 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 23:56:56,048 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-06-05 23:56:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:56,111 INFO L93 Difference]: Finished difference Result 2262 states and 7355 transitions. [2021-06-05 23:56:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 23:56:56,111 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 23:56:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:56,114 INFO L225 Difference]: With dead ends: 2262 [2021-06-05 23:56:56,114 INFO L226 Difference]: Without dead ends: 2212 [2021-06-05 23:56:56,114 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1399.0ms TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 23:56:56,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-06-05 23:56:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1600. [2021-06-05 23:56:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1599 states have (on average 3.367104440275172) internal successors, (5384), 1599 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 5384 transitions. [2021-06-05 23:56:56,133 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 5384 transitions. Word has length 26 [2021-06-05 23:56:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:56,133 INFO L482 AbstractCegarLoop]: Abstraction has 1600 states and 5384 transitions. [2021-06-05 23:56:56,133 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 23:56:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 5384 transitions. [2021-06-05 23:56:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:56,135 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:56,135 INFO L554 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 23:56:56,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1123 [2021-06-05 23:56:56,335 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:56,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:56,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1800748254, now seen corresponding path program 24 times [2021-06-05 23:56:56,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:56,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388387600] [2021-06-05 23:56:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:56,529 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-06-05 23:56:56,857 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 23:56:56,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:56,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388387600] [2021-06-05 23:56:56,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388387600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:56,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467806412] [2021-06-05 23:56:56,857 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 23:56:56,887 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:56:56,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:56:56,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:56:56,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:57,239 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 23:56:57,419 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 23:56:57,489 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_129], 2=[A, v_prenex_128]} [2021-06-05 23:56:57,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:57,494 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 23:56:57,495 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:57,598 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 23:56:57,599 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 23:56:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:57,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:57,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:57,603 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:57,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:57,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:57,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:57,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:57,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:57,648 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:57,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:57,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:57,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:56:57,652 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:57,684 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:57,686 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 23:56:57,686 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 23:56:57,739 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 23:56:57,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467806412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:57,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:56:57,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:56:57,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963623967] [2021-06-05 23:56:57,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:56:57,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:56:57,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:56:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:56:57,740 INFO L87 Difference]: Start difference. First operand 1600 states and 5384 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 23:56:58,552 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 23:56:58,904 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-06-05 23:56:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:56:59,001 INFO L93 Difference]: Finished difference Result 1991 states and 6587 transitions. [2021-06-05 23:56:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:56:59,001 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 23:56:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:56:59,004 INFO L225 Difference]: With dead ends: 1991 [2021-06-05 23:56:59,004 INFO L226 Difference]: Without dead ends: 1976 [2021-06-05 23:56:59,004 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1857.7ms TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-06-05 23:56:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-06-05 23:56:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1611. [2021-06-05 23:56:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 3.3670807453416147) internal successors, (5421), 1610 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:56:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 5421 transitions. [2021-06-05 23:56:59,030 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 5421 transitions. Word has length 26 [2021-06-05 23:56:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:56:59,030 INFO L482 AbstractCegarLoop]: Abstraction has 1611 states and 5421 transitions. [2021-06-05 23:56:59,031 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 23:56:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 5421 transitions. [2021-06-05 23:56:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:56:59,032 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:56:59,033 INFO L554 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 23:56:59,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1154 [2021-06-05 23:56:59,233 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:56:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:56:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash 183215474, now seen corresponding path program 25 times [2021-06-05 23:56:59,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:56:59,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456392011] [2021-06-05 23:56:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:56:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:59,425 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-06-05 23:56:59,558 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2021-06-05 23:56:59,752 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 23:56:59,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:56:59,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456392011] [2021-06-05 23:56:59,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456392011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:56:59,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281478180] [2021-06-05 23:56:59,752 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 23:56:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:56:59,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:56:59,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:56:59,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:59,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:59,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:59,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:59,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:59,980 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:56:59,980 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 23:56:59,981 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:59,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:59,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:59,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:59,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:56:59,992 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:56:59,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:56:59,994 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:56:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:56:59,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,004 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:00,004 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 23:57:00,004 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,018 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:00,018 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 23:57:00,019 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,029 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:00,029 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 23:57:00,030 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,043 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:00,043 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 23:57:00,044 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,053 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:00,053 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 23:57:00,054 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,066 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:00,066 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 23:57:00,069 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:00,081 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 23:57:00,091 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,105 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:00,105 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 23:57:00,106 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,118 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:00,118 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 23:57:00,119 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:00,130 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 23:57:00,131 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,144 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:00,144 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 23:57:00,145 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,155 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:00,155 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 23:57:00,155 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:00,176 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 42 treesize of output 27 [2021-06-05 23:57:00,177 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:00,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:00,185 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:00,185 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 23:57:00,188 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:00,254 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:00,256 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:57:00,256 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 23:57:00,441 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 23:57:00,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281478180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:00,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:00,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:57:00,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48825421] [2021-06-05 23:57:00,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:57:00,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:00,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:57:00,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:57:00,442 INFO L87 Difference]: Start difference. First operand 1611 states and 5421 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 23:57:01,016 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 23:57:01,180 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2021-06-05 23:57:01,722 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-06-05 23:57:01,900 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-06-05 23:57:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:01,987 INFO L93 Difference]: Finished difference Result 2102 states and 6930 transitions. [2021-06-05 23:57:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 23:57:01,988 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 23:57:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:01,990 INFO L225 Difference]: With dead ends: 2102 [2021-06-05 23:57:01,990 INFO L226 Difference]: Without dead ends: 2083 [2021-06-05 23:57:01,990 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1910.7ms TimeCoverageRelationStatistics Valid=220, Invalid=970, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 23:57:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-06-05 23:57:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1612. [2021-06-05 23:57:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 3.3699565487274983) internal successors, (5429), 1611 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 5429 transitions. [2021-06-05 23:57:02,008 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 5429 transitions. Word has length 26 [2021-06-05 23:57:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:02,009 INFO L482 AbstractCegarLoop]: Abstraction has 1612 states and 5429 transitions. [2021-06-05 23:57:02,009 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 23:57:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 5429 transitions. [2021-06-05 23:57:02,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:02,010 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:02,010 INFO L554 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 23:57:02,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1163,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:57:02,211 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:02,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1506727430, now seen corresponding path program 26 times [2021-06-05 23:57:02,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:02,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315372009] [2021-06-05 23:57:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:02,515 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 23:57:02,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:02,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315372009] [2021-06-05 23:57:02,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315372009] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:02,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408417254] [2021-06-05 23:57:02,516 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 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 23:57:02,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:57:02,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:02,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:57:02,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,745 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,745 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 23:57:02,745 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,753 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:02,753 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,760 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:02,761 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,770 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:02,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:02,771 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,781 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:02,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:02,782 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,792 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:02,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:02,793 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,800 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,800 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 23:57:02,801 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:02,810 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 23:57:02,811 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,820 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:02,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:02,824 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,831 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 23:57:02,831 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,839 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,839 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 23:57:02,840 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:02,849 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 23:57:02,851 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,861 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:02,861 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 23:57:02,862 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:02,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:02,875 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,881 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,881 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 23:57:02,882 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:02,887 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:57:02,887 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 23:57:02,887 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:02,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:02,952 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:57:02,952 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 23:57:03,132 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 23:57:03,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408417254] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:03,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:03,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:57:03,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859442167] [2021-06-05 23:57:03,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:57:03,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:57:03,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:57:03,133 INFO L87 Difference]: Start difference. First operand 1612 states and 5429 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 23:57:03,649 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 23:57:04,255 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-06-05 23:57:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:04,307 INFO L93 Difference]: Finished difference Result 2116 states and 6975 transitions. [2021-06-05 23:57:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 23:57:04,307 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 23:57:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:04,309 INFO L225 Difference]: With dead ends: 2116 [2021-06-05 23:57:04,309 INFO L226 Difference]: Without dead ends: 2091 [2021-06-05 23:57:04,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1390.0ms TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:57:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2021-06-05 23:57:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1618. [2021-06-05 23:57:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.368583797155226) internal successors, (5447), 1617 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5447 transitions. [2021-06-05 23:57:04,328 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5447 transitions. Word has length 26 [2021-06-05 23:57:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:04,328 INFO L482 AbstractCegarLoop]: Abstraction has 1618 states and 5447 transitions. [2021-06-05 23:57:04,328 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 23:57:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5447 transitions. [2021-06-05 23:57:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:04,330 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:04,330 INFO L554 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 23:57:04,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1188 [2021-06-05 23:57:04,543 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:04,544 INFO L82 PathProgramCache]: Analyzing trace with hash -132958662, now seen corresponding path program 42 times [2021-06-05 23:57:04,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:04,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66876641] [2021-06-05 23:57:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:04,998 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 23:57:04,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:04,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66876641] [2021-06-05 23:57:04,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66876641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:04,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196876357] [2021-06-05 23:57:04,998 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 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 23:57:05,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:57:05,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:05,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:57:05,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,500 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,508 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,516 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,524 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,532 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:05,541 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,549 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,558 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,565 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 43 treesize of output 13 [2021-06-05 23:57:05,566 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:05,574 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:05,583 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,591 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:05,599 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,606 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,613 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:05,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:05,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:05,618 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:05,650 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-05 23:57:05,651 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 23:57:05,651 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-05 23:57:05,686 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 23:57:05,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196876357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:05,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:05,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 23:57:05,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875816658] [2021-06-05 23:57:05,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:57:05,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:05,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:57:05,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:57:05,687 INFO L87 Difference]: Start difference. First operand 1618 states and 5447 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 23:57:07,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:07,184 INFO L93 Difference]: Finished difference Result 2097 states and 6880 transitions. [2021-06-05 23:57:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 23:57:07,184 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 23:57:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:07,187 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 23:57:07,187 INFO L226 Difference]: Without dead ends: 2071 [2021-06-05 23:57:07,187 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1722.6ms TimeCoverageRelationStatistics Valid=340, Invalid=1552, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 23:57:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-06-05 23:57:07,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1622. [2021-06-05 23:57:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.366440468846391) internal successors, (5457), 1621 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5457 transitions. [2021-06-05 23:57:07,205 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5457 transitions. Word has length 26 [2021-06-05 23:57:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:07,205 INFO L482 AbstractCegarLoop]: Abstraction has 1622 states and 5457 transitions. [2021-06-05 23:57:07,205 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 23:57:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5457 transitions. [2021-06-05 23:57:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:07,207 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:07,207 INFO L554 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 23:57:07,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1205 [2021-06-05 23:57:07,407 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash 934915902, now seen corresponding path program 43 times [2021-06-05 23:57:07,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:07,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929135237] [2021-06-05 23:57:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:07,921 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 23:57:07,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:07,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929135237] [2021-06-05 23:57:07,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929135237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:07,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472635273] [2021-06-05 23:57:07,921 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 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 23:57:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:07,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:57:07,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:08,264 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_132, v_prenex_134], 6=[A, v_prenex_130]} [2021-06-05 23:57:08,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:08,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:08,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:08,270 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 23:57:08,271 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:08,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:08,276 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 23:57:08,277 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:08,376 INFO L628 ElimStorePlain]: treesize reduction 180, result has 40.2 percent of original size [2021-06-05 23:57:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:08,380 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 23:57:08,381 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:08,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:08,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:08,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:08,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 23:57:08,418 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:08,446 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:08,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:08,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:08,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:08,450 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:08,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:08,476 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 23:57:08,476 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:341, output treesize:43 [2021-06-05 23:57:08,520 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 23:57:08,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472635273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:08,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:08,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 23:57:08,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720901035] [2021-06-05 23:57:08,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:57:08,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:08,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:57:08,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:57:08,521 INFO L87 Difference]: Start difference. First operand 1622 states and 5457 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 23:57:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:10,243 INFO L93 Difference]: Finished difference Result 2270 states and 7447 transitions. [2021-06-05 23:57:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 23:57:10,244 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 23:57:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:10,246 INFO L225 Difference]: With dead ends: 2270 [2021-06-05 23:57:10,246 INFO L226 Difference]: Without dead ends: 2255 [2021-06-05 23:57:10,247 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1984.4ms TimeCoverageRelationStatistics Valid=391, Invalid=1589, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 23:57:10,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-06-05 23:57:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1622. [2021-06-05 23:57:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.366440468846391) internal successors, (5457), 1621 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5457 transitions. [2021-06-05 23:57:10,266 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5457 transitions. Word has length 26 [2021-06-05 23:57:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:10,266 INFO L482 AbstractCegarLoop]: Abstraction has 1622 states and 5457 transitions. [2021-06-05 23:57:10,266 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 23:57:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5457 transitions. [2021-06-05 23:57:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:10,268 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:10,268 INFO L554 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 23:57:10,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1319,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:57:10,468 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:10,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:10,469 INFO L82 PathProgramCache]: Analyzing trace with hash 346540478, now seen corresponding path program 27 times [2021-06-05 23:57:10,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:10,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577043386] [2021-06-05 23:57:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:10,665 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2021-06-05 23:57:10,888 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-06-05 23:57:11,108 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 23:57:11,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:11,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577043386] [2021-06-05 23:57:11,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577043386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:11,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248476367] [2021-06-05 23:57:11,109 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 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:57:11,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:57:11,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:11,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:57:11,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:11,400 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 23:57:11,567 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 23:57:11,852 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-06-05 23:57:11,911 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_143, v_prenex_145], 6=[A, v_prenex_147]} [2021-06-05 23:57:11,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:11,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:11,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:11,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:11,919 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:11,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:11,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:11,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:11,924 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:12,075 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-06-05 23:57:12,076 INFO L628 ElimStorePlain]: treesize reduction 147, result has 51.5 percent of original size [2021-06-05 23:57:12,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:12,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:12,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:12,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:12,082 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:12,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:12,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:12,086 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 21 treesize of output 13 [2021-06-05 23:57:12,087 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:12,133 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:12,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:12,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:12,137 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:12,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:12,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:12,184 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 23:57:12,186 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:12,226 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:12,229 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 23:57:12,229 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:341, output treesize:61 [2021-06-05 23:57:12,280 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 23:57:12,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248476367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:12,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:12,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:57:12,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560460746] [2021-06-05 23:57:12,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:57:12,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:57:12,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:57:12,281 INFO L87 Difference]: Start difference. First operand 1622 states and 5457 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 23:57:12,681 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-06-05 23:57:12,977 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-06-05 23:57:13,139 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 47 [2021-06-05 23:57:13,580 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-06-05 23:57:14,135 WARN L205 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2021-06-05 23:57:14,587 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 89 [2021-06-05 23:57:15,208 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 87 [2021-06-05 23:57:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:15,334 INFO L93 Difference]: Finished difference Result 2122 states and 6912 transitions. [2021-06-05 23:57:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:57:15,334 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 23:57:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:15,336 INFO L225 Difference]: With dead ends: 2122 [2021-06-05 23:57:15,336 INFO L226 Difference]: Without dead ends: 2107 [2021-06-05 23:57:15,336 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3710.9ms TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:57:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2021-06-05 23:57:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1633. [2021-06-05 23:57:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1632 states have (on average 3.3670343137254903) internal successors, (5495), 1632 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:15,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 5495 transitions. [2021-06-05 23:57:15,355 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 5495 transitions. Word has length 26 [2021-06-05 23:57:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:15,355 INFO L482 AbstractCegarLoop]: Abstraction has 1633 states and 5495 transitions. [2021-06-05 23:57:15,355 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 23:57:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 5495 transitions. [2021-06-05 23:57:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:15,357 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:15,357 INFO L554 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 23:57:15,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1333 [2021-06-05 23:57:15,557 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:15,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1896922042, now seen corresponding path program 44 times [2021-06-05 23:57:15,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:15,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764085334] [2021-06-05 23:57:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:16,039 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 23:57:16,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:16,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764085334] [2021-06-05 23:57:16,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764085334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:16,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171116045] [2021-06-05 23:57:16,040 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 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 23:57:16,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:57:16,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:16,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 23:57:16,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:16,405 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-06-05 23:57:16,737 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_158], 6=[v_prenex_160, v_prenex_162]} [2021-06-05 23:57:16,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:16,761 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:57:16,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-06-05 23:57:16,764 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:16,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:16,786 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:57:16,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 30 [2021-06-05 23:57:16,788 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:16,962 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 23:57:16,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:16,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:16,982 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 23:57:16,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 23 [2021-06-05 23:57:16,984 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:16,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:16,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:16,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 18 treesize of output 28 [2021-06-05 23:57:17,003 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:17,159 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 23:57:17,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:17,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:17,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:17,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:17,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:17,179 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:17,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 [2021-06-05 23:57:17,184 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:17,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:17,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:17,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:17,202 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 23:57:17,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 26 [2021-06-05 23:57:17,203 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:17,351 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 23:57:17,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:17,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:17,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:17,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:17,375 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:57:17,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 treesize of output 30 [2021-06-05 23:57:17,376 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:17,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:17,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:17,393 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 23:57:17,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 treesize of output 30 [2021-06-05 23:57:17,395 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:17,519 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 23:57:17,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:17,535 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 23:57:17,535 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:433, output treesize:343 [2021-06-05 23:57:17,691 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 23:57:17,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171116045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:17,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:17,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:57:17,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009929683] [2021-06-05 23:57:17,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 23:57:17,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:17,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 23:57:17,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-06-05 23:57:17,692 INFO L87 Difference]: Start difference. First operand 1633 states and 5495 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 23:57:19,804 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2021-06-05 23:57:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:20,378 INFO L93 Difference]: Finished difference Result 2550 states and 8113 transitions. [2021-06-05 23:57:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 23:57:20,379 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 23:57:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:20,382 INFO L225 Difference]: With dead ends: 2550 [2021-06-05 23:57:20,382 INFO L226 Difference]: Without dead ends: 2506 [2021-06-05 23:57:20,382 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 3035.8ms TimeCoverageRelationStatistics Valid=511, Invalid=2459, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 23:57:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-06-05 23:57:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1640. [2021-06-05 23:57:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 3.36790726052471) internal successors, (5520), 1639 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 5520 transitions. [2021-06-05 23:57:20,403 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 5520 transitions. Word has length 26 [2021-06-05 23:57:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:20,403 INFO L482 AbstractCegarLoop]: Abstraction has 1640 states and 5520 transitions. [2021-06-05 23:57:20,403 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 23:57:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 5520 transitions. [2021-06-05 23:57:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:20,405 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:20,405 INFO L554 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 23:57:20,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1349,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:57:20,609 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash 920603198, now seen corresponding path program 45 times [2021-06-05 23:57:20,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:20,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206213751] [2021-06-05 23:57:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:21,027 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 23:57:21,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:21,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206213751] [2021-06-05 23:57:21,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206213751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:21,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643667763] [2021-06-05 23:57:21,027 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 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 23:57:21,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:57:21,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:21,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:57:21,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:21,352 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 23:57:21,550 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 23:57:21,822 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 23:57:22,188 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 23:57:22,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2021-06-05 23:57:22,196 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:22,242 INFO L354 Elim1Store]: treesize reduction 29, result has 40.8 percent of original size [2021-06-05 23:57:22,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 38 [2021-06-05 23:57:22,243 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:23,239 WARN L205 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2021-06-05 23:57:23,240 INFO L628 ElimStorePlain]: treesize reduction 23, result has 97.5 percent of original size [2021-06-05 23:57:23,306 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-06-05 23:57:23,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 51 [2021-06-05 23:57:23,309 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:23,367 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-06-05 23:57:23,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 23:57:23,370 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:23,861 WARN L205 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-06-05 23:57:23,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:23,909 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:23,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 67 [2021-06-05 23:57:23,931 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:23,981 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-06-05 23:57:23,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 23:57:23,986 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:25,502 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 185 DAG size of output: 168 [2021-06-05 23:57:25,503 INFO L628 ElimStorePlain]: treesize reduction 92, result has 90.6 percent of original size [2021-06-05 23:57:25,569 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 23:57:25,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 59 [2021-06-05 23:57:25,579 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:25,639 INFO L354 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size [2021-06-05 23:57:25,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 63 [2021-06-05 23:57:25,651 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:26,658 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 181 DAG size of output: 172 [2021-06-05 23:57:26,659 INFO L628 ElimStorePlain]: treesize reduction 83, result has 91.5 percent of original size [2021-06-05 23:57:26,717 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2021-06-05 23:57:26,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 52 [2021-06-05 23:57:26,724 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:26,762 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:26,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 61 [2021-06-05 23:57:26,792 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:27,261 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-06-05 23:57:27,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:27,326 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 23:57:27,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2021-06-05 23:57:27,334 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:27,388 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 23:57:27,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 56 [2021-06-05 23:57:27,405 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:28,337 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 152 [2021-06-05 23:57:28,337 INFO L628 ElimStorePlain]: treesize reduction 37, result has 95.8 percent of original size [2021-06-05 23:57:28,394 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2021-06-05 23:57:28,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 52 [2021-06-05 23:57:28,402 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:28,449 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-06-05 23:57:28,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 51 [2021-06-05 23:57:28,453 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:28,897 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 23:57:28,897 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:28,946 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-06-05 23:57:28,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 23:57:28,949 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:29,000 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 23:57:29,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 56 [2021-06-05 23:57:29,017 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:29,820 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 136 [2021-06-05 23:57:29,821 INFO L628 ElimStorePlain]: treesize reduction 68, result has 91.9 percent of original size [2021-06-05 23:57:29,936 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 8 dim-1 vars, End of recursive call: and 15 xjuncts. [2021-06-05 23:57:29,937 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 17 variables, input treesize:913, output treesize:2294 [2021-06-05 23:57:30,580 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 69 [2021-06-05 23:57:30,739 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-06-05 23:57:30,766 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 23:57:30,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643667763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:30,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:30,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2021-06-05 23:57:30,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145507683] [2021-06-05 23:57:30,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 23:57:30,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:30,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 23:57:30,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-06-05 23:57:30,766 INFO L87 Difference]: Start difference. First operand 1640 states and 5520 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 23:57:33,183 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 23:57:33,563 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-05 23:57:34,248 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 89 [2021-06-05 23:57:34,637 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 23:57:34,983 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 23:57:35,140 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 33 [2021-06-05 23:57:35,741 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 90 [2021-06-05 23:57:36,224 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 92 [2021-06-05 23:57:37,136 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 96 [2021-06-05 23:57:37,515 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-06-05 23:57:37,746 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2021-06-05 23:57:37,897 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2021-06-05 23:57:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:38,035 INFO L93 Difference]: Finished difference Result 3086 states and 9767 transitions. [2021-06-05 23:57:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 23:57:38,035 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 23:57:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:38,039 INFO L225 Difference]: With dead ends: 3086 [2021-06-05 23:57:38,039 INFO L226 Difference]: Without dead ends: 3056 [2021-06-05 23:57:38,039 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 7619.1ms TimeCoverageRelationStatistics Valid=696, Invalid=4134, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 23:57:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2021-06-05 23:57:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 1671. [2021-06-05 23:57:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 3.3748502994011975) internal successors, (5636), 1670 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 5636 transitions. [2021-06-05 23:57:38,063 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 5636 transitions. Word has length 26 [2021-06-05 23:57:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:38,063 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 5636 transitions. [2021-06-05 23:57:38,063 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 23:57:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 5636 transitions. [2021-06-05 23:57:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:38,065 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:38,065 INFO L554 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 23:57:38,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1419,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:57:38,280 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:38,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:38,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1936410854, now seen corresponding path program 28 times [2021-06-05 23:57:38,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:38,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984607400] [2021-06-05 23:57:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:38,472 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 23:57:38,845 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 23:57:38,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:38,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984607400] [2021-06-05 23:57:38,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984607400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:38,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234788863] [2021-06-05 23:57:38,846 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 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 23:57:38,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:57:38,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:38,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:57:38,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:39,161 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 23:57:39,407 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 23:57:39,472 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_185], 2=[v_prenex_186, v_prenex_187], 3=[A]} [2021-06-05 23:57:39,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:39,476 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 23:57:39,477 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:39,590 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 23:57:39,590 INFO L628 ElimStorePlain]: treesize reduction 94, result has 60.3 percent of original size [2021-06-05 23:57:39,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:39,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:39,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:39,595 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 28 treesize of output 16 [2021-06-05 23:57:39,596 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:39,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:39,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:39,600 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 21 treesize of output 13 [2021-06-05 23:57:39,601 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:39,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:39,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:39,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:39,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:39,645 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:39,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:39,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:39,683 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 23:57:39,684 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:39,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:39,720 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 23:57:39,720 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:251, output treesize:56 [2021-06-05 23:57:39,771 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 23:57:39,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234788863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:39,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:39,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 23:57:39,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081387766] [2021-06-05 23:57:39,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:57:39,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:39,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:57:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:57:39,772 INFO L87 Difference]: Start difference. First operand 1671 states and 5636 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 23:57:40,353 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-06-05 23:57:41,115 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-05 23:57:41,243 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 23:57:41,459 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2021-06-05 23:57:41,689 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-06-05 23:57:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:41,845 INFO L93 Difference]: Finished difference Result 2244 states and 7296 transitions. [2021-06-05 23:57:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 23:57:41,845 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 23:57:41,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:41,848 INFO L225 Difference]: With dead ends: 2244 [2021-06-05 23:57:41,848 INFO L226 Difference]: Without dead ends: 2229 [2021-06-05 23:57:41,848 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2514.2ms TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 23:57:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-06-05 23:57:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1676. [2021-06-05 23:57:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1675 states have (on average 3.3761194029850747) internal successors, (5655), 1675 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 5655 transitions. [2021-06-05 23:57:41,866 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 5655 transitions. Word has length 26 [2021-06-05 23:57:41,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:41,866 INFO L482 AbstractCegarLoop]: Abstraction has 1676 states and 5655 transitions. [2021-06-05 23:57:41,867 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 23:57:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 5655 transitions. [2021-06-05 23:57:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:41,868 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:41,868 INFO L554 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 23:57:42,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1636,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:57:42,069 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:42,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:42,069 INFO L82 PathProgramCache]: Analyzing trace with hash 318878074, now seen corresponding path program 29 times [2021-06-05 23:57:42,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:42,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563588726] [2021-06-05 23:57:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:42,438 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 23:57:42,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:42,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563588726] [2021-06-05 23:57:42,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563588726] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:42,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435459777] [2021-06-05 23:57:42,438 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 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 23:57:42,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:57:42,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:42,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:57:42,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:42,801 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 23:57:42,994 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 23:57:43,039 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_195, v_prenex_197, v_prenex_199, v_prenex_200, v_prenex_201], 3=[v_prenex_196, v_prenex_198]} [2021-06-05 23:57:43,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,052 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:43,052 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 23:57:43,053 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,161 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 23:57:43,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,172 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:43,175 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,292 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 23:57:43,292 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,303 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:43,304 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,413 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 23:57:43,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,424 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,424 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 24 [2021-06-05 23:57:43,427 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,528 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 23:57:43,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,538 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,538 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 33 treesize of output 27 [2021-06-05 23:57:43,539 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,645 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:57:43,645 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 23:57:43,646 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,738 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,749 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 23:57:43,749 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 23:57:43,750 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,836 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:43,846 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:43,849 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:43,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:43,936 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 23:57:43,936 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:317, output treesize:184 [2021-06-05 23:57:44,108 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 23:57:44,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435459777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:44,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:44,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:57:44,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97391483] [2021-06-05 23:57:44,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:57:44,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:57:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:57:44,108 INFO L87 Difference]: Start difference. First operand 1676 states and 5655 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 23:57:45,408 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-06-05 23:57:45,904 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2021-06-05 23:57:46,304 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 106 [2021-06-05 23:57:46,712 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2021-06-05 23:57:47,187 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 110 [2021-06-05 23:57:47,654 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2021-06-05 23:57:47,885 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-06-05 23:57:48,211 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2021-06-05 23:57:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:48,366 INFO L93 Difference]: Finished difference Result 2686 states and 8637 transitions. [2021-06-05 23:57:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 23:57:48,367 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 23:57:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:48,370 INFO L225 Difference]: With dead ends: 2686 [2021-06-05 23:57:48,370 INFO L226 Difference]: Without dead ends: 2652 [2021-06-05 23:57:48,370 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 4286.7ms TimeCoverageRelationStatistics Valid=371, Invalid=1435, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 23:57:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-06-05 23:57:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1683. [2021-06-05 23:57:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 3.381688466111772) internal successors, (5688), 1682 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 5688 transitions. [2021-06-05 23:57:48,393 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 5688 transitions. Word has length 26 [2021-06-05 23:57:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:48,394 INFO L482 AbstractCegarLoop]: Abstraction has 1683 states and 5688 transitions. [2021-06-05 23:57:48,394 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 23:57:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 5688 transitions. [2021-06-05 23:57:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:48,395 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:48,396 INFO L554 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 23:57:48,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1647 [2021-06-05 23:57:48,596 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2122915566, now seen corresponding path program 46 times [2021-06-05 23:57:48,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:48,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059313021] [2021-06-05 23:57:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:48,904 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 23:57:48,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:48,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059313021] [2021-06-05 23:57:48,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059313021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:48,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953409990] [2021-06-05 23:57:48,905 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 23:57:48,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:57:48,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:48,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:57:48,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:49,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,445 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 36 treesize of output 16 [2021-06-05 23:57:49,446 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,453 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 30 treesize of output 16 [2021-06-05 23:57:49,454 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:49,462 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,469 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,476 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 43 treesize of output 16 [2021-06-05 23:57:49,477 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,485 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,494 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,501 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,510 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,518 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,527 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,535 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:49,543 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,552 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,560 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 43 treesize of output 19 [2021-06-05 23:57:49,561 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:49,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:57:49,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:49,567 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:49,625 INFO L628 ElimStorePlain]: treesize reduction 216, result has 14.6 percent of original size [2021-06-05 23:57:49,626 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 23:57:49,626 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:31 [2021-06-05 23:57:49,661 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 23:57:49,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953409990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:49,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:49,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 23:57:49,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671171657] [2021-06-05 23:57:49,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:57:49,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:49,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:57:49,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:57:49,662 INFO L87 Difference]: Start difference. First operand 1683 states and 5688 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 23:57:50,925 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-06-05 23:57:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:52,170 INFO L93 Difference]: Finished difference Result 3384 states and 10825 transitions. [2021-06-05 23:57:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 23:57:52,170 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 23:57:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:52,174 INFO L225 Difference]: With dead ends: 3384 [2021-06-05 23:57:52,174 INFO L226 Difference]: Without dead ends: 3348 [2021-06-05 23:57:52,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 2488.1ms TimeCoverageRelationStatistics Valid=538, Invalid=2432, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 23:57:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2021-06-05 23:57:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 1796. [2021-06-05 23:57:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1795 states have (on average 3.403899721448468) internal successors, (6110), 1795 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 6110 transitions. [2021-06-05 23:57:52,199 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 6110 transitions. Word has length 26 [2021-06-05 23:57:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:52,199 INFO L482 AbstractCegarLoop]: Abstraction has 1796 states and 6110 transitions. [2021-06-05 23:57:52,199 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 23:57:52,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 6110 transitions. [2021-06-05 23:57:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:52,201 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:52,201 INFO L554 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 23:57:52,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1664,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:57:52,402 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:52,402 INFO L82 PathProgramCache]: Analyzing trace with hash -338403078, now seen corresponding path program 47 times [2021-06-05 23:57:52,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:52,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84747613] [2021-06-05 23:57:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:52,752 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 23:57:52,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:52,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84747613] [2021-06-05 23:57:52,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84747613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:52,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242557147] [2021-06-05 23:57:52,753 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 23:57:52,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:57:52,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:52,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:57:52,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:53,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,257 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 23:57:53,257 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 37 [2021-06-05 23:57:53,258 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,290 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2021-06-05 23:57:53,290 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 47 [2021-06-05 23:57:53,293 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,317 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 23:57:53,317 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 41 treesize of output 28 [2021-06-05 23:57:53,318 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,342 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 23:57:53,342 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 23:57:53,345 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,369 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 23:57:53,369 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 32 treesize of output 30 [2021-06-05 23:57:53,371 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,387 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,387 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 23:57:53,387 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,411 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 23:57:53,411 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 28 [2021-06-05 23:57:53,412 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,427 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,427 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 23:57:53,428 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,444 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,444 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 23:57:53,444 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,460 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:53,461 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,484 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 23:57:53,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:57:53,485 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,499 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,500 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 23:57:53,500 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,515 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,515 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 23:57:53,516 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,530 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,530 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 23:57:53,531 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,551 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:53,551 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 23:57:53,557 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:53,566 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 23:57:53,566 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 23:57:53,566 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:53,726 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2021-06-05 23:57:53,726 INFO L628 ElimStorePlain]: treesize reduction 116, result has 51.7 percent of original size [2021-06-05 23:57:53,728 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 23:57:53,728 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133 [2021-06-05 23:57:53,850 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 23:57:53,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242557147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:53,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:57:53,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 23:57:53,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313529086] [2021-06-05 23:57:53,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:57:53,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:57:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:57:53,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:57:53,851 INFO L87 Difference]: Start difference. First operand 1796 states and 6110 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 23:57:55,030 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2021-06-05 23:57:55,493 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-06-05 23:57:55,914 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-06-05 23:57:56,366 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2021-06-05 23:57:56,612 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2021-06-05 23:57:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:57:56,842 INFO L93 Difference]: Finished difference Result 3832 states and 12118 transitions. [2021-06-05 23:57:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 23:57:56,842 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 23:57:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:57:56,846 INFO L225 Difference]: With dead ends: 3832 [2021-06-05 23:57:56,846 INFO L226 Difference]: Without dead ends: 3775 [2021-06-05 23:57:56,847 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 3016.6ms TimeCoverageRelationStatistics Valid=649, Invalid=2657, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 23:57:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-06-05 23:57:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 1819. [2021-06-05 23:57:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 3.407590759075908) internal successors, (6195), 1818 states have internal predecessors, (6195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:57:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 6195 transitions. [2021-06-05 23:57:56,874 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 6195 transitions. Word has length 26 [2021-06-05 23:57:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:57:56,874 INFO L482 AbstractCegarLoop]: Abstraction has 1819 states and 6195 transitions. [2021-06-05 23:57:56,874 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 23:57:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 6195 transitions. [2021-06-05 23:57:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:57:56,876 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:57:56,876 INFO L554 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 23:57:57,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1770 [2021-06-05 23:57:57,077 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:57:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:57:57,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1512099618, now seen corresponding path program 30 times [2021-06-05 23:57:57,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:57:57,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613178880] [2021-06-05 23:57:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:57:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:57:57,530 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 23:57:57,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:57:57,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613178880] [2021-06-05 23:57:57,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613178880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:57:57,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225271514] [2021-06-05 23:57:57,531 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 23:57:57,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:57:57,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:57:57,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:57:57,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:57:57,965 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 23:57:58,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:58,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:58,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:58,413 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:58,553 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-05 23:57:58,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:58,573 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:57:58,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:58,575 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:58,709 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 23:57:58,709 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:58,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:58,731 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:57:58,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:58,734 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:58,865 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-05 23:57:58,865 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:58,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:58,887 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:57:58,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:58,891 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:59,020 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 23:57:59,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:59,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:59,042 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:57:59,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:59,043 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:59,173 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-05 23:57:59,173 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:59,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:59,191 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:57:59,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:59,192 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:59,319 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 23:57:59,320 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:59,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:59,337 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:59,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:57:59,338 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:59,466 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 23:57:59,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:59,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:57:59,483 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:59,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:57:59,487 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:57:59,610 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 23:57:59,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:57:59,640 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 23:57:59,640 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:373, output treesize:497 [2021-06-05 23:57:59,924 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-05 23:58:00,151 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 23:58:00,250 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 23:58:00,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225271514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:00,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:00,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:58:00,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747296729] [2021-06-05 23:58:00,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:58:00,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:00,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:58:00,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:58:00,250 INFO L87 Difference]: Start difference. First operand 1819 states and 6195 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 23:58:00,473 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 28 [2021-06-05 23:58:01,199 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2021-06-05 23:58:01,365 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-05 23:58:01,673 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2021-06-05 23:58:01,974 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-06-05 23:58:02,518 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-06-05 23:58:02,971 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-06-05 23:58:03,342 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 60 [2021-06-05 23:58:03,609 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-06-05 23:58:04,128 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2021-06-05 23:58:04,343 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 23:58:04,567 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-06-05 23:58:05,038 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-06-05 23:58:05,645 WARN L205 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 120 [2021-06-05 23:58:06,078 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 133 [2021-06-05 23:58:06,912 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 140 [2021-06-05 23:58:07,286 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 99 [2021-06-05 23:58:07,676 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2021-06-05 23:58:08,034 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2021-06-05 23:58:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:08,095 INFO L93 Difference]: Finished difference Result 2671 states and 8693 transitions. [2021-06-05 23:58:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 23:58:08,096 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 23:58:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:08,099 INFO L225 Difference]: With dead ends: 2671 [2021-06-05 23:58:08,099 INFO L226 Difference]: Without dead ends: 2637 [2021-06-05 23:58:08,099 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 8261.5ms TimeCoverageRelationStatistics Valid=388, Invalid=2162, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:58:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-06-05 23:58:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 1837. [2021-06-05 23:58:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 3.411764705882353) internal successors, (6264), 1836 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 6264 transitions. [2021-06-05 23:58:08,122 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 6264 transitions. Word has length 26 [2021-06-05 23:58:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:08,122 INFO L482 AbstractCegarLoop]: Abstraction has 1837 states and 6264 transitions. [2021-06-05 23:58:08,122 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 23:58:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 6264 transitions. [2021-06-05 23:58:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:08,125 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:08,125 INFO L554 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 23:58:08,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1885 [2021-06-05 23:58:08,325 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:08,325 INFO L82 PathProgramCache]: Analyzing trace with hash 461518918, now seen corresponding path program 31 times [2021-06-05 23:58:08,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:08,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464818915] [2021-06-05 23:58:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:08,664 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 23:58:08,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:08,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464818915] [2021-06-05 23:58:08,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464818915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:08,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209641573] [2021-06-05 23:58:08,665 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 23:58:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:58:08,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,891 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:08,891 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 40 treesize of output 22 [2021-06-05 23:58:08,891 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:08,901 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 43 treesize of output 31 [2021-06-05 23:58:08,902 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,912 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:08,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2021-06-05 23:58:08,916 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,926 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:58:08,926 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 23:58:08,928 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,939 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:58:08,939 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 23:58:08,940 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,949 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:08,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 23:58:08,950 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,959 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:08,959 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 45 treesize of output 27 [2021-06-05 23:58:08,959 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,968 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:08,968 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 50 treesize of output 30 [2021-06-05 23:58:08,969 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,977 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:08,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2021-06-05 23:58:08,978 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,987 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:08,987 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 45 treesize of output 27 [2021-06-05 23:58:08,988 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:08,996 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:08,996 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 47 treesize of output 25 [2021-06-05 23:58:08,997 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:09,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-06-05 23:58:09,010 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,022 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:09,022 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 23:58:09,023 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:09,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,034 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:58:09,034 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 38 treesize of output 24 [2021-06-05 23:58:09,035 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:09,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:09,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2021-06-05 23:58:09,047 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:09,053 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:58:09,053 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 42 treesize of output 22 [2021-06-05 23:58:09,053 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:09,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:09,124 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:58:09,124 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:865, output treesize:221 [2021-06-05 23:58:09,314 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 23:58:09,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209641573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:09,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:09,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:58:09,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796992762] [2021-06-05 23:58:09,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:58:09,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:09,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:58:09,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:58:09,315 INFO L87 Difference]: Start difference. First operand 1837 states and 6264 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 23:58:10,912 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-06-05 23:58:11,251 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-06-05 23:58:11,494 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2021-06-05 23:58:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:11,651 INFO L93 Difference]: Finished difference Result 2618 states and 8665 transitions. [2021-06-05 23:58:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 23:58:11,651 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 23:58:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:11,654 INFO L225 Difference]: With dead ends: 2618 [2021-06-05 23:58:11,654 INFO L226 Difference]: Without dead ends: 2584 [2021-06-05 23:58:11,654 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2327.4ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 23:58:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-06-05 23:58:11,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1832. [2021-06-05 23:58:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 3.409612233752048) internal successors, (6243), 1831 states have internal predecessors, (6243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 6243 transitions. [2021-06-05 23:58:11,677 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 6243 transitions. Word has length 26 [2021-06-05 23:58:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:11,677 INFO L482 AbstractCegarLoop]: Abstraction has 1832 states and 6243 transitions. [2021-06-05 23:58:11,677 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 23:58:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 6243 transitions. [2021-06-05 23:58:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:11,679 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:11,679 INFO L554 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 23:58:11,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1945,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:11,879 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:11,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:11,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1795376066, now seen corresponding path program 32 times [2021-06-05 23:58:11,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:11,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495163064] [2021-06-05 23:58:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:12,269 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 23:58:12,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:12,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495163064] [2021-06-05 23:58:12,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495163064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:12,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159433338] [2021-06-05 23:58:12,269 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 23:58:12,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:58:12,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:12,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:58:12,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:12,665 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:12,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:12,669 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:12,687 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:58:12,687 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 25 [2021-06-05 23:58:12,689 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:12,815 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 23:58:12,815 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:12,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:12,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:12,832 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:12,845 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:12,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:12,847 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:12,975 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 23:58:12,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:12,993 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:58:12,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:12,994 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:13,010 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:58:13,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:13,013 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:13,131 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 23:58:13,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:13,149 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:58:13,149 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 28 [2021-06-05 23:58:13,150 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:13,163 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:58:13,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:13,165 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:13,277 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 23:58:13,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:13,290 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 23:58:13,290 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:349, output treesize:430 [2021-06-05 23:58:13,527 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-06-05 23:58:13,768 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 23:58:13,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159433338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:13,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:13,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:58:13,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715586620] [2021-06-05 23:58:13,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:58:13,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:13,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:58:13,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:58:13,769 INFO L87 Difference]: Start difference. First operand 1832 states and 6243 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 23:58:14,382 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-05 23:58:14,513 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2021-06-05 23:58:14,720 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-06-05 23:58:15,295 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-06-05 23:58:15,637 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-05 23:58:15,901 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2021-06-05 23:58:16,251 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-06-05 23:58:16,610 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-06-05 23:58:16,879 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-05 23:58:17,154 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-06-05 23:58:17,477 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-06-05 23:58:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:17,809 INFO L93 Difference]: Finished difference Result 2647 states and 8625 transitions. [2021-06-05 23:58:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 23:58:17,809 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 23:58:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:17,813 INFO L225 Difference]: With dead ends: 2647 [2021-06-05 23:58:17,813 INFO L226 Difference]: Without dead ends: 2578 [2021-06-05 23:58:17,813 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 4239.6ms TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 23:58:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-06-05 23:58:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1826. [2021-06-05 23:58:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 3.4076712328767123) internal successors, (6219), 1825 states have internal predecessors, (6219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 6219 transitions. [2021-06-05 23:58:17,835 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 6219 transitions. Word has length 26 [2021-06-05 23:58:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:17,835 INFO L482 AbstractCegarLoop]: Abstraction has 1826 states and 6219 transitions. [2021-06-05 23:58:17,835 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 23:58:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 6219 transitions. [2021-06-05 23:58:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:17,837 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:17,837 INFO L554 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 23:58:18,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1963,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:18,039 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1102392532, now seen corresponding path program 48 times [2021-06-05 23:58:18,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:18,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273995790] [2021-06-05 23:58:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:18,608 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 23:58:18,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:18,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273995790] [2021-06-05 23:58:18,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273995790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:18,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428431106] [2021-06-05 23:58:18,609 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 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 23:58:18,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 23:58:18,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:18,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:58:18,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:19,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,053 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,060 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,066 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,073 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,079 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,086 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 30 treesize of output 16 [2021-06-05 23:58:19,086 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,093 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,099 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,106 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-06-05 23:58:19,113 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,120 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,126 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,133 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,139 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:19,146 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:19,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:19,149 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 39 treesize of output 19 [2021-06-05 23:58:19,149 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:19,178 INFO L628 ElimStorePlain]: treesize reduction 34, result has 49.3 percent of original size [2021-06-05 23:58:19,179 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 23:58:19,179 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:21 [2021-06-05 23:58:19,205 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 23:58:19,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428431106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:19,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:19,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 23:58:19,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613162904] [2021-06-05 23:58:19,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:58:19,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:58:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:58:19,206 INFO L87 Difference]: Start difference. First operand 1826 states and 6219 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 23:58:19,708 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2021-06-05 23:58:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:20,719 INFO L93 Difference]: Finished difference Result 2336 states and 7723 transitions. [2021-06-05 23:58:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 23:58:20,719 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 23:58:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:20,722 INFO L225 Difference]: With dead ends: 2336 [2021-06-05 23:58:20,722 INFO L226 Difference]: Without dead ends: 2314 [2021-06-05 23:58:20,722 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1776.4ms TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 23:58:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-06-05 23:58:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 1818. [2021-06-05 23:58:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4072647220693453) internal successors, (6191), 1817 states have internal predecessors, (6191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6191 transitions. [2021-06-05 23:58:20,741 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6191 transitions. Word has length 26 [2021-06-05 23:58:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:20,742 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6191 transitions. [2021-06-05 23:58:20,742 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 23:58:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6191 transitions. [2021-06-05 23:58:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:20,744 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:20,744 INFO L554 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 23:58:20,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2004 [2021-06-05 23:58:20,944 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:20,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2027886398, now seen corresponding path program 49 times [2021-06-05 23:58:20,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:20,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085906805] [2021-06-05 23:58:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:21,126 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-06-05 23:58:21,475 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 23:58:21,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:21,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085906805] [2021-06-05 23:58:21,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085906805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:21,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849957444] [2021-06-05 23:58:21,475 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 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 23:58:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:21,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:58:21,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:21,796 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 23:58:21,841 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_263, v_prenex_259], 5=[A, v_prenex_261]} [2021-06-05 23:58:21,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:21,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:21,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:21,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:21,848 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:21,936 INFO L628 ElimStorePlain]: treesize reduction 150, result has 45.5 percent of original size [2021-06-05 23:58:21,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:21,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:21,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:21,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:21,941 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:21,968 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:21,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:21,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:21,972 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:21,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:21,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:21,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:22,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:58:22,000 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:22,030 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:22,032 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 23:58:22,032 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:314, output treesize:41 [2021-06-05 23:58:22,076 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 23:58:22,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849957444] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:22,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:22,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 23:58:22,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776296070] [2021-06-05 23:58:22,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:58:22,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:22,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:58:22,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:58:22,076 INFO L87 Difference]: Start difference. First operand 1818 states and 6191 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 23:58:23,913 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2021-06-05 23:58:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:24,577 INFO L93 Difference]: Finished difference Result 2526 states and 8350 transitions. [2021-06-05 23:58:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 23:58:24,577 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 23:58:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:24,581 INFO L225 Difference]: With dead ends: 2526 [2021-06-05 23:58:24,581 INFO L226 Difference]: Without dead ends: 2511 [2021-06-05 23:58:24,581 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2673.8ms TimeCoverageRelationStatistics Valid=534, Invalid=2222, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 23:58:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-06-05 23:58:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 1818. [2021-06-05 23:58:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4072647220693453) internal successors, (6191), 1817 states have internal predecessors, (6191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6191 transitions. [2021-06-05 23:58:24,603 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6191 transitions. Word has length 26 [2021-06-05 23:58:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:24,603 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6191 transitions. [2021-06-05 23:58:24,603 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 23:58:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6191 transitions. [2021-06-05 23:58:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:24,605 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:24,605 INFO L554 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 23:58:24,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2098,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:58:24,806 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:24,806 INFO L82 PathProgramCache]: Analyzing trace with hash 849981858, now seen corresponding path program 50 times [2021-06-05 23:58:24,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:24,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930881428] [2021-06-05 23:58:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:25,205 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 23:58:25,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:25,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930881428] [2021-06-05 23:58:25,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930881428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:25,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722770410] [2021-06-05 23:58:25,205 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 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 23:58:25,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:58:25,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:25,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:58:25,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:25,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,450 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 23:58:25,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:58:25,452 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,476 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 23:58:25,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 26 [2021-06-05 23:58:25,477 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,501 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 23:58:25,501 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 23:58:25,502 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,524 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 23:58:25,524 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 32 treesize of output 30 [2021-06-05 23:58:25,525 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,541 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,541 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 23:58:25,541 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,566 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 23:58:25,567 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 23:58:25,570 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,592 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 23:58:25,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 26 [2021-06-05 23:58:25,593 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,608 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,609 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 23:58:25,609 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,624 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,624 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 23:58:25,625 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,647 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 23:58:25,647 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 23 [2021-06-05 23:58:25,648 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,670 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:25,670 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 43 [2021-06-05 23:58:25,678 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,693 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,693 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 23:58:25,693 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,707 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,708 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 41 treesize of output 1 [2021-06-05 23:58:25,708 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,722 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,722 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 23:58:25,722 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,737 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,737 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 23:58:25,738 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:25,746 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:58:25,746 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 23:58:25,746 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:25,827 INFO L628 ElimStorePlain]: treesize reduction 76, result has 55.0 percent of original size [2021-06-05 23:58:25,827 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 23:58:25,828 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:753, output treesize:93 [2021-06-05 23:58:25,915 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 23:58:25,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722770410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:25,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:25,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-06-05 23:58:25,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720230250] [2021-06-05 23:58:25,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:58:25,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:25,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:58:25,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:58:25,916 INFO L87 Difference]: Start difference. First operand 1818 states and 6191 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 23:58:28,406 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-05 23:58:28,791 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2021-06-05 23:58:29,201 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-06-05 23:58:29,426 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-06-05 23:58:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:29,768 INFO L93 Difference]: Finished difference Result 3017 states and 9720 transitions. [2021-06-05 23:58:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 23:58:29,769 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 23:58:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:29,772 INFO L225 Difference]: With dead ends: 3017 [2021-06-05 23:58:29,772 INFO L226 Difference]: Without dead ends: 2970 [2021-06-05 23:58:29,772 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 3595.6ms TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 23:58:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2021-06-05 23:58:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1841. [2021-06-05 23:58:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 3.3967391304347827) internal successors, (6250), 1840 states have internal predecessors, (6250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 6250 transitions. [2021-06-05 23:58:29,797 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 6250 transitions. Word has length 26 [2021-06-05 23:58:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:29,797 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 6250 transitions. [2021-06-05 23:58:29,797 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 23:58:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 6250 transitions. [2021-06-05 23:58:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:29,799 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:29,799 INFO L554 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 23:58:29,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2112 [2021-06-05 23:58:29,999 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:30,000 INFO L82 PathProgramCache]: Analyzing trace with hash -696255298, now seen corresponding path program 51 times [2021-06-05 23:58:30,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:30,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394547544] [2021-06-05 23:58:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:30,320 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 23:58:30,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:30,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394547544] [2021-06-05 23:58:30,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394547544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:30,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010765225] [2021-06-05 23:58:30,321 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 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 23:58:30,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 23:58:30,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:30,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 23:58:30,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:30,763 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 23:58:30,944 INFO L446 ElimStorePlain]: Different costs {5=[A, v_prenex_273, v_prenex_265, v_prenex_277, v_prenex_267, v_prenex_269], 6=[v_prenex_271, v_prenex_275]} [2021-06-05 23:58:31,004 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 23:58:31,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 51 [2021-06-05 23:58:31,010 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:31,103 INFO L354 Elim1Store]: treesize reduction 25, result has 39.0 percent of original size [2021-06-05 23:58:31,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 [2021-06-05 23:58:31,104 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:32,050 WARN L205 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2021-06-05 23:58:32,051 INFO L628 ElimStorePlain]: treesize reduction 5, result has 99.5 percent of original size [2021-06-05 23:58:32,096 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:32,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 59 [2021-06-05 23:58:32,108 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:32,152 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 23:58:32,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:58:32,157 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:33,570 WARN L205 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 183 DAG size of output: 171 [2021-06-05 23:58:33,571 INFO L628 ElimStorePlain]: treesize reduction 45, result has 95.3 percent of original size [2021-06-05 23:58:33,629 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 23:58:33,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:33,639 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:33,692 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 23:58:33,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:33,700 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:34,653 WARN L205 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 176 [2021-06-05 23:58:34,654 INFO L628 ElimStorePlain]: treesize reduction 44, result has 95.4 percent of original size [2021-06-05 23:58:34,712 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 23:58:34,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:34,718 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:34,760 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 23:58:34,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 48 [2021-06-05 23:58:34,768 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:35,695 WARN L205 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 167 [2021-06-05 23:58:35,695 INFO L628 ElimStorePlain]: treesize reduction 37, result has 96.0 percent of original size [2021-06-05 23:58:35,747 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 23:58:35,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 47 [2021-06-05 23:58:35,750 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:35,789 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 23:58:35,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:35,794 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:36,237 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-06-05 23:58:36,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:36,278 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-05 23:58:36,278 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 28 treesize of output 36 [2021-06-05 23:58:36,280 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:36,321 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 23:58:36,321 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-05 23:58:36,323 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:36,768 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-06-05 23:58:36,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:36,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:36,802 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:36,802 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57 [2021-06-05 23:58:36,816 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:36,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:36,864 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 23:58:36,865 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 23:58:36,871 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:37,285 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-05 23:58:37,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:37,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:37,331 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 23:58:37,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:58:37,342 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:37,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:37,356 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 23:58:37,356 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 23:58:37,357 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:37,731 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-06-05 23:58:37,731 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:37,771 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 15 xjuncts. [2021-06-05 23:58:37,772 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:957, output treesize:1656 [2021-06-05 23:58:38,288 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2021-06-05 23:58:38,545 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-06-05 23:58:38,695 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 23:58:38,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010765225] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:38,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:38,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 23:58:38,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371644229] [2021-06-05 23:58:38,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 23:58:38,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:38,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 23:58:38,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2021-06-05 23:58:38,696 INFO L87 Difference]: Start difference. First operand 1841 states and 6250 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 23:58:39,011 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-05 23:58:39,344 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 41 [2021-06-05 23:58:39,868 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 47 [2021-06-05 23:58:40,314 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-06-05 23:58:40,774 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 23:58:40,919 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-06-05 23:58:41,409 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2021-06-05 23:58:41,851 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-06-05 23:58:42,203 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2021-06-05 23:58:42,356 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2021-06-05 23:58:42,642 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 61 [2021-06-05 23:58:43,198 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 76 [2021-06-05 23:58:43,462 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2021-06-05 23:58:43,683 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 50 [2021-06-05 23:58:44,417 WARN L205 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2021-06-05 23:58:45,264 WARN L205 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2021-06-05 23:58:45,569 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2021-06-05 23:58:46,018 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 23:58:46,225 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 33 [2021-06-05 23:58:46,420 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 39 [2021-06-05 23:58:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:46,537 INFO L93 Difference]: Finished difference Result 3177 states and 10241 transitions. [2021-06-05 23:58:46,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 23:58:46,538 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 23:58:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:46,542 INFO L225 Difference]: With dead ends: 3177 [2021-06-05 23:58:46,542 INFO L226 Difference]: Without dead ends: 3132 [2021-06-05 23:58:46,542 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 8391.9ms TimeCoverageRelationStatistics Valid=674, Invalid=2986, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 23:58:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2021-06-05 23:58:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 1888. [2021-06-05 23:58:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.3995760466348703) internal successors, (6415), 1887 states have internal predecessors, (6415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6415 transitions. [2021-06-05 23:58:46,576 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6415 transitions. Word has length 26 [2021-06-05 23:58:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:46,576 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6415 transitions. [2021-06-05 23:58:46,577 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 23:58:46,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6415 transitions. [2021-06-05 23:58:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:46,578 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:46,579 INFO L554 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 23:58:46,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2138 [2021-06-05 23:58:46,779 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:46,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1813857782, now seen corresponding path program 52 times [2021-06-05 23:58:46,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:46,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208369195] [2021-06-05 23:58:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:47,182 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 23:58:47,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:47,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208369195] [2021-06-05 23:58:47,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208369195] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:47,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527751331] [2021-06-05 23:58:47,183 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 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 23:58:47,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:58:47,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:47,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:58:47,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:47,507 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-05 23:58:47,632 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_287], 6=[v_prenex_285, v_prenex_289]} [2021-06-05 23:58:47,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:47,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:47,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:58:47,641 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:47,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 treesize of output 13 [2021-06-05 23:58:47,646 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,752 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-06-05 23:58:47,753 INFO L628 ElimStorePlain]: treesize reduction 154, result has 43.2 percent of original size [2021-06-05 23:58:47,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,756 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 23:58:47,757 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:47,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:47,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:47,794 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,824 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:47,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:47,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:58:47,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:58:47,829 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:47,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:47,855 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 23:58:47,856 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:337, output treesize:55 [2021-06-05 23:58:47,898 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 23:58:47,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527751331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:47,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:47,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 23:58:47,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146828265] [2021-06-05 23:58:47,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:58:47,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:58:47,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:58:47,899 INFO L87 Difference]: Start difference. First operand 1888 states and 6415 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 23:58:49,120 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2021-06-05 23:58:49,295 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2021-06-05 23:58:49,762 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-06-05 23:58:49,920 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 23:58:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:58:50,112 INFO L93 Difference]: Finished difference Result 2395 states and 7935 transitions. [2021-06-05 23:58:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 23:58:50,113 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 23:58:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:58:50,116 INFO L225 Difference]: With dead ends: 2395 [2021-06-05 23:58:50,116 INFO L226 Difference]: Without dead ends: 2380 [2021-06-05 23:58:50,116 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 2314.4ms TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 23:58:50,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-06-05 23:58:50,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1886. [2021-06-05 23:58:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.39946949602122) internal successors, (6408), 1885 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:58:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6408 transitions. [2021-06-05 23:58:50,136 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6408 transitions. Word has length 26 [2021-06-05 23:58:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:58:50,137 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6408 transitions. [2021-06-05 23:58:50,137 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 23:58:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6408 transitions. [2021-06-05 23:58:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:58:50,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:58:50,139 INFO L554 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 23:58:50,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2263 [2021-06-05 23:58:50,339 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:58:50,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:58:50,339 INFO L82 PathProgramCache]: Analyzing trace with hash -782211534, now seen corresponding path program 53 times [2021-06-05 23:58:50,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:58:50,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979473980] [2021-06-05 23:58:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:58:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:58:50,693 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 23:58:50,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:58:50,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979473980] [2021-06-05 23:58:50,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979473980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:50,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746603543] [2021-06-05 23:58:50,694 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 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 23:58:50,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 23:58:50,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:58:50,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:58:50,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:58:53,191 WARN L205 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 51 [2021-06-05 23:58:53,385 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 23:58:53,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:53,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:53,586 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 23:58:53,587 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 23:58:53,588 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:53,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:53,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:53,622 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:53,622 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 23:58:53,628 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:53,993 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-06-05 23:58:53,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:54,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,033 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 23:58:54,033 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 23:58:54,037 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,062 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 23:58:54,062 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 23:58:54,065 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:54,412 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-06-05 23:58:54,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:54,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,446 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:58:54,446 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 23:58:54,447 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:54,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,471 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 23:58:54,471 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 23:58:54,473 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:54,810 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-05 23:58:54,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:54,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,842 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 23:58:54,842 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 33 [2021-06-05 23:58:54,844 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:54,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:54,868 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:54,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:58:54,874 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:55,486 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2021-06-05 23:58:55,487 INFO L628 ElimStorePlain]: treesize reduction 36, result has 94.8 percent of original size [2021-06-05 23:58:55,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:55,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:55,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:55,516 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 23:58:55,521 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:55,546 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 23:58:55,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:58:55,550 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:56,114 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2021-06-05 23:58:56,115 INFO L628 ElimStorePlain]: treesize reduction 38, result has 94.0 percent of original size [2021-06-05 23:58:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,142 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 23:58:56,142 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 26 [2021-06-05 23:58:56,143 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:56,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,167 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:58:56,167 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 23:58:56,170 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:56,422 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 23:58:56,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:56,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,460 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:58:56,461 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 35 treesize of output 35 [2021-06-05 23:58:56,464 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:56,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,476 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 23:58:56,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:58:56,477 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:56,690 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 23:58:56,690 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:58:56,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,715 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 23:58:56,715 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 23:58:56,716 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:56,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:58:56,737 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:58:56,737 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 23:58:56,741 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:58:57,109 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2021-06-05 23:58:57,110 INFO L628 ElimStorePlain]: treesize reduction 32, result has 92.7 percent of original size [2021-06-05 23:58:57,122 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 23:58:57,122 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:841, output treesize:391 [2021-06-05 23:58:57,302 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 23:58:57,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746603543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:58:57,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:58:57,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 23:58:57,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374792141] [2021-06-05 23:58:57,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 23:58:57,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:58:57,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 23:58:57,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-06-05 23:58:57,303 INFO L87 Difference]: Start difference. First operand 1886 states and 6408 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 23:58:57,612 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 23:59:00,319 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-06-05 23:59:02,496 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-06-05 23:59:03,314 WARN L205 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 154 [2021-06-05 23:59:03,505 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-05 23:59:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:03,756 INFO L93 Difference]: Finished difference Result 2712 states and 8977 transitions. [2021-06-05 23:59:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 23:59:03,757 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 23:59:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:03,760 INFO L225 Difference]: With dead ends: 2712 [2021-06-05 23:59:03,760 INFO L226 Difference]: Without dead ends: 2682 [2021-06-05 23:59:03,760 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 8902.8ms TimeCoverageRelationStatistics Valid=434, Invalid=2116, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 23:59:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-06-05 23:59:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1886. [2021-06-05 23:59:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.39946949602122) internal successors, (6408), 1885 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6408 transitions. [2021-06-05 23:59:03,782 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6408 transitions. Word has length 26 [2021-06-05 23:59:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:03,782 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6408 transitions. [2021-06-05 23:59:03,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 23:59:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6408 transitions. [2021-06-05 23:59:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:03,784 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:03,784 INFO L554 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 23:59:04,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2277 [2021-06-05 23:59:04,000 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:04,000 INFO L82 PathProgramCache]: Analyzing trace with hash 376151132, now seen corresponding path program 54 times [2021-06-05 23:59:04,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:04,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750051667] [2021-06-05 23:59:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:04,443 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 23:59:04,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:04,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750051667] [2021-06-05 23:59:04,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750051667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:04,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411943663] [2021-06-05 23:59:04,443 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 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 23:59:04,467 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 23:59:04,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:04,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:04,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:04,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,662 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 23:59:04,662 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 30 [2021-06-05 23:59:04,666 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,691 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 23:59:04,691 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 23:59:04,694 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,709 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:04,710 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,725 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,725 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 23:59:04,725 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,749 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 23:59:04,749 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 23:59:04,753 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,774 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:04,774 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 43 [2021-06-05 23:59:04,780 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,794 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:04,795 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,809 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,809 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 23:59:04,809 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,824 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:04,824 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,857 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 23:59:04,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:04,858 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,872 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,872 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 23:59:04,873 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,886 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,886 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 23:59:04,887 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,901 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,901 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 23:59:04,901 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,916 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,916 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 23:59:04,917 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,930 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,930 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 23:59:04,931 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:04,939 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 23:59:04,939 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 23:59:04,939 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:04,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:04,977 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 23:59:04,977 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:753, output treesize:93 [2021-06-05 23:59:05,064 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 23:59:05,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411943663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:05,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:05,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 23:59:05,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552079132] [2021-06-05 23:59:05,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:59:05,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:05,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:59:05,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:59:05,065 INFO L87 Difference]: Start difference. First operand 1886 states and 6408 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 23:59:05,839 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-06-05 23:59:06,328 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-06-05 23:59:07,187 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-06-05 23:59:07,474 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-06-05 23:59:07,676 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-06-05 23:59:07,820 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-06-05 23:59:08,000 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-06-05 23:59:08,328 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2021-06-05 23:59:08,489 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2021-06-05 23:59:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:08,669 INFO L93 Difference]: Finished difference Result 3398 states and 10882 transitions. [2021-06-05 23:59:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 23:59:08,670 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 23:59:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:08,674 INFO L225 Difference]: With dead ends: 3398 [2021-06-05 23:59:08,674 INFO L226 Difference]: Without dead ends: 3364 [2021-06-05 23:59:08,674 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 3669.9ms TimeCoverageRelationStatistics Valid=768, Invalid=2424, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 23:59:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2021-06-05 23:59:08,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 1892. [2021-06-05 23:59:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 3.405076679005817) internal successors, (6439), 1891 states have internal predecessors, (6439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 6439 transitions. [2021-06-05 23:59:08,701 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 6439 transitions. Word has length 26 [2021-06-05 23:59:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:08,701 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 6439 transitions. [2021-06-05 23:59:08,701 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 23:59:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 6439 transitions. [2021-06-05 23:59:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:08,703 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:08,703 INFO L554 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 23:59:08,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2347 [2021-06-05 23:59:08,905 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 871796194, now seen corresponding path program 33 times [2021-06-05 23:59:08,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:08,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150299174] [2021-06-05 23:59:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:09,290 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 23:59:09,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:09,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150299174] [2021-06-05 23:59:09,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150299174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:09,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503872751] [2021-06-05 23:59:09,290 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 23:59:09,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:09,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:09,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:59:09,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:09,750 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-06-05 23:59:09,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:09,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:09,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:09,867 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:10,024 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 23:59:10,024 INFO L628 ElimStorePlain]: treesize reduction 98, result has 60.6 percent of original size [2021-06-05 23:59:10,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:10,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:10,029 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 23:59:10,030 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:10,080 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:10,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:10,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:10,085 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:10,133 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:10,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:10,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:10,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:10,138 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 28 treesize of output 16 [2021-06-05 23:59:10,139 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:10,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:10,142 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 23:59:10,143 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:10,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:10,186 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 23:59:10,186 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:285, output treesize:51 [2021-06-05 23:59:10,232 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 23:59:10,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503872751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:10,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:10,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 23:59:10,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976128774] [2021-06-05 23:59:10,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 23:59:10,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:10,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 23:59:10,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:59:10,233 INFO L87 Difference]: Start difference. First operand 1892 states and 6439 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 23:59:10,935 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-06-05 23:59:11,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:11,098 INFO L93 Difference]: Finished difference Result 2313 states and 7725 transitions. [2021-06-05 23:59:11,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 23:59:11,099 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 23:59:11,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:11,101 INFO L225 Difference]: With dead ends: 2313 [2021-06-05 23:59:11,101 INFO L226 Difference]: Without dead ends: 2298 [2021-06-05 23:59:11,102 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1354.0ms TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:59:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-06-05 23:59:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1884. [2021-06-05 23:59:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 3.4083908656399364) internal successors, (6418), 1883 states have internal predecessors, (6418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 6418 transitions. [2021-06-05 23:59:11,121 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 6418 transitions. Word has length 26 [2021-06-05 23:59:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:11,121 INFO L482 AbstractCegarLoop]: Abstraction has 1884 states and 6418 transitions. [2021-06-05 23:59:11,121 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 23:59:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 6418 transitions. [2021-06-05 23:59:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:11,123 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:11,124 INFO L554 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 23:59:11,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2376 [2021-06-05 23:59:11,324 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1200955766, now seen corresponding path program 34 times [2021-06-05 23:59:11,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:11,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99852040] [2021-06-05 23:59:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:11,670 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 23:59:11,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:11,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99852040] [2021-06-05 23:59:11,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99852040] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:11,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73473009] [2021-06-05 23:59:11,671 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 23:59:11,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:11,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:11,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:11,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:11,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:11,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:11,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:11,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:11,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:11,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:11,990 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 31 treesize of output 19 [2021-06-05 23:59:11,991 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:11,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:11,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:11,996 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 28 treesize of output 16 [2021-06-05 23:59:11,997 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,002 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 26 treesize of output 13 [2021-06-05 23:59:12,003 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:12,021 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,027 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 33 treesize of output 19 [2021-06-05 23:59:12,028 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:12,035 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:12,043 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,049 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:12,050 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:12,057 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,064 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:12,064 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:12,071 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:12,077 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:12,082 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:12,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:12,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:12,086 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:12,156 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 23:59:12,158 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 23:59:12,158 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 23:59:12,205 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 23:59:12,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73473009] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:12,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:12,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 23:59:12,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296037720] [2021-06-05 23:59:12,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 23:59:12,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 23:59:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:59:12,206 INFO L87 Difference]: Start difference. First operand 1884 states and 6418 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 23:59:12,478 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-05 23:59:12,592 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2021-06-05 23:59:12,802 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2021-06-05 23:59:13,260 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-06-05 23:59:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:13,466 INFO L93 Difference]: Finished difference Result 2549 states and 8455 transitions. [2021-06-05 23:59:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 23:59:13,467 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 23:59:13,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:13,470 INFO L225 Difference]: With dead ends: 2549 [2021-06-05 23:59:13,470 INFO L226 Difference]: Without dead ends: 2534 [2021-06-05 23:59:13,470 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1429.8ms TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:59:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2021-06-05 23:59:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 1876. [2021-06-05 23:59:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 3.4074666666666666) internal successors, (6389), 1875 states have internal predecessors, (6389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 6389 transitions. [2021-06-05 23:59:13,492 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 6389 transitions. Word has length 26 [2021-06-05 23:59:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:13,492 INFO L482 AbstractCegarLoop]: Abstraction has 1876 states and 6389 transitions. [2021-06-05 23:59:13,492 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 23:59:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 6389 transitions. [2021-06-05 23:59:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:13,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:13,494 INFO L554 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 23:59:13,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2396,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:13,695 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash -179287784, now seen corresponding path program 35 times [2021-06-05 23:59:13,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:13,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379312247] [2021-06-05 23:59:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:13,993 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 23:59:13,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:13,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379312247] [2021-06-05 23:59:13,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379312247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:13,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230223778] [2021-06-05 23:59:13,994 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 23:59:14,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 23:59:14,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:14,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:59:14,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:14,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,548 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:14,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:14,549 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,564 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:14,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:14,570 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,705 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 23:59:14,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:14,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,727 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:14,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:14,728 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,747 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:14,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:14,750 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,889 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 23:59:14,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:14,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:14,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:14,907 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:14,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:14,923 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:14,923 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 23:59:14,924 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:15,051 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 23:59:15,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:15,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:15,072 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:15,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:15,075 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:15,088 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:15,088 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 33 treesize of output 35 [2021-06-05 23:59:15,090 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:15,207 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 23:59:15,207 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:15,226 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 23:59:15,226 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:314 [2021-06-05 23:59:15,426 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 23:59:15,519 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 23:59:15,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230223778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:15,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:15,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-05 23:59:15,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649760772] [2021-06-05 23:59:15,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 23:59:15,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:15,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 23:59:15,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-06-05 23:59:15,520 INFO L87 Difference]: Start difference. First operand 1876 states and 6389 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 23:59:16,192 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-06-05 23:59:16,369 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2021-06-05 23:59:16,655 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-06-05 23:59:17,009 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 23:59:17,219 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-06-05 23:59:17,476 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 23:59:17,778 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2021-06-05 23:59:17,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:17,846 INFO L93 Difference]: Finished difference Result 2284 states and 7582 transitions. [2021-06-05 23:59:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 23:59:17,846 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 23:59:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:17,849 INFO L225 Difference]: With dead ends: 2284 [2021-06-05 23:59:17,849 INFO L226 Difference]: Without dead ends: 2269 [2021-06-05 23:59:17,849 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2339.1ms TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-06-05 23:59:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-06-05 23:59:17,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1867. [2021-06-05 23:59:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 3.404608788853162) internal successors, (6353), 1866 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 6353 transitions. [2021-06-05 23:59:17,870 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 6353 transitions. Word has length 26 [2021-06-05 23:59:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:17,870 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 6353 transitions. [2021-06-05 23:59:17,870 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 23:59:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 6353 transitions. [2021-06-05 23:59:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:17,872 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:17,872 INFO L554 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 23:59:18,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2424,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:18,088 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:18,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:18,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1269968860, now seen corresponding path program 36 times [2021-06-05 23:59:18,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:18,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166101371] [2021-06-05 23:59:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:18,395 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 23:59:18,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:18,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166101371] [2021-06-05 23:59:18,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166101371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:18,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086454260] [2021-06-05 23:59:18,395 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 23:59:18,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:59:18,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:18,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:59:18,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:18,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,620 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,620 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 23:59:18,621 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,628 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:18,628 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,636 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:18,636 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,646 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:18,646 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 23:59:18,648 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,658 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:18,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:18,659 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:18,669 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 23:59:18,670 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,678 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,678 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 23:59:18,678 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:18,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:18,689 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,699 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:18,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:18,702 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,711 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,711 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 23:59:18,712 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,722 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,722 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 23:59:18,722 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,735 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:18,735 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 33 treesize of output 27 [2021-06-05 23:59:18,737 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,749 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:18,749 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 23:59:18,751 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,761 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:18,762 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 23:59:18,765 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,773 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,773 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 23:59:18,774 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:18,778 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:18,778 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 23:59:18,779 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:18,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:18,847 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:59:18,847 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 23:59:19,025 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 23:59:19,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086454260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:19,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:19,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:59:19,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304280548] [2021-06-05 23:59:19,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:19,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:19,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:19,026 INFO L87 Difference]: Start difference. First operand 1867 states and 6353 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 23:59:19,528 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-06-05 23:59:19,867 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2021-06-05 23:59:20,163 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 23:59:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:20,350 INFO L93 Difference]: Finished difference Result 2064 states and 6910 transitions. [2021-06-05 23:59:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 23:59:20,350 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 23:59:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:20,359 INFO L225 Difference]: With dead ends: 2064 [2021-06-05 23:59:20,359 INFO L226 Difference]: Without dead ends: 2049 [2021-06-05 23:59:20,360 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1487.6ms TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-06-05 23:59:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-06-05 23:59:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1860. [2021-06-05 23:59:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 3.4023668639053253) internal successors, (6325), 1859 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 6325 transitions. [2021-06-05 23:59:20,378 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 6325 transitions. Word has length 26 [2021-06-05 23:59:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:20,378 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 6325 transitions. [2021-06-05 23:59:20,378 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 23:59:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 6325 transitions. [2021-06-05 23:59:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:20,380 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:20,380 INFO L554 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 23:59:20,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2491,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:20,580 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:20,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:20,581 INFO L82 PathProgramCache]: Analyzing trace with hash 663462910, now seen corresponding path program 37 times [2021-06-05 23:59:20,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:20,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618751386] [2021-06-05 23:59:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:20,898 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 23:59:20,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:20,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618751386] [2021-06-05 23:59:20,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618751386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:20,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449142357] [2021-06-05 23:59:20,899 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 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 23:59:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:20,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:59:20,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:21,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,219 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 28 treesize of output 16 [2021-06-05 23:59:21,220 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,225 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 21 treesize of output 13 [2021-06-05 23:59:21,225 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,231 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,236 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,242 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,247 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,252 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 23:59:21,252 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,258 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,263 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,268 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,272 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 23:59:21,273 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,278 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,283 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,288 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:21,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:21,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:21,291 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:21,360 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 23:59:21,361 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 23:59:21,361 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 23:59:21,417 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 23:59:21,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449142357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:21,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:21,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 23:59:21,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095698124] [2021-06-05 23:59:21,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 23:59:21,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 23:59:21,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:59:21,418 INFO L87 Difference]: Start difference. First operand 1860 states and 6325 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 23:59:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:22,046 INFO L93 Difference]: Finished difference Result 2341 states and 7786 transitions. [2021-06-05 23:59:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 23:59:22,047 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 23:59:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:22,049 INFO L225 Difference]: With dead ends: 2341 [2021-06-05 23:59:22,049 INFO L226 Difference]: Without dead ends: 2320 [2021-06-05 23:59:22,050 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 845.5ms TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:59:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-06-05 23:59:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1860. [2021-06-05 23:59:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 3.4023668639053253) internal successors, (6325), 1859 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 6325 transitions. [2021-06-05 23:59:22,069 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 6325 transitions. Word has length 26 [2021-06-05 23:59:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:22,069 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 6325 transitions. [2021-06-05 23:59:22,069 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 23:59:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 6325 transitions. [2021-06-05 23:59:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:22,071 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:22,071 INFO L554 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 23:59:22,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2508 [2021-06-05 23:59:22,272 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash -716780640, now seen corresponding path program 38 times [2021-06-05 23:59:22,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:22,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928878138] [2021-06-05 23:59:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:22,563 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 23:59:22,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:22,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928878138] [2021-06-05 23:59:22,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928878138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:22,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074213483] [2021-06-05 23:59:22,563 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 23:59:22,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:22,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:22,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:22,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:22,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,866 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:22,866 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 23:59:22,867 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,875 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:22,876 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 23:59:22,876 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,885 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:22,885 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 23:59:22,886 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,895 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:22,895 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 23:59:22,896 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,905 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:22,905 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 23:59:22,906 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,914 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:22,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:22,915 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:22,926 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 23:59:22,927 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:22,937 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 23:59:22,941 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,949 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:22,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:22,949 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:22,959 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 23:59:22,960 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,970 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:22,970 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 23:59:22,972 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,982 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:22,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:22,985 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:22,995 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:22,995 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 23:59:22,996 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,006 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:23,006 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 23:59:23,007 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,017 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:23,017 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 28 treesize of output 20 [2021-06-05 23:59:23,018 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:23,023 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:23,023 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 33 treesize of output 19 [2021-06-05 23:59:23,024 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:23,099 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:23,104 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 23:59:23,104 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 23:59:23,273 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 23:59:23,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074213483] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:23,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:23,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 23:59:23,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663208604] [2021-06-05 23:59:23,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:23,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:23,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:23,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:23,274 INFO L87 Difference]: Start difference. First operand 1860 states and 6325 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 23:59:24,302 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2021-06-05 23:59:24,484 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-06-05 23:59:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:24,535 INFO L93 Difference]: Finished difference Result 2236 states and 7452 transitions. [2021-06-05 23:59:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 23:59:24,535 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 23:59:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:24,538 INFO L225 Difference]: With dead ends: 2236 [2021-06-05 23:59:24,538 INFO L226 Difference]: Without dead ends: 2207 [2021-06-05 23:59:24,538 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1439.0ms TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2021-06-05 23:59:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-06-05 23:59:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1840. [2021-06-05 23:59:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 3.3953235454051116) internal successors, (6244), 1839 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 6244 transitions. [2021-06-05 23:59:24,557 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 6244 transitions. Word has length 26 [2021-06-05 23:59:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:24,557 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 6244 transitions. [2021-06-05 23:59:24,557 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 23:59:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 6244 transitions. [2021-06-05 23:59:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:24,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:24,559 INFO L554 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 23:59:24,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2542 [2021-06-05 23:59:24,759 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:24,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:24,760 INFO L82 PathProgramCache]: Analyzing trace with hash 794427266, now seen corresponding path program 39 times [2021-06-05 23:59:24,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:24,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395121089] [2021-06-05 23:59:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:25,011 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 23:59:25,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:25,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395121089] [2021-06-05 23:59:25,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395121089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:25,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80488763] [2021-06-05 23:59:25,012 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 23:59:25,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:25,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:25,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:59:25,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:25,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:25,429 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:25,429 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 23:59:25,432 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:25,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:25,452 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:25,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:25,454 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:25,595 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 23:59:25,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:25,612 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:25,612 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 23:59:25,615 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:25,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:25,633 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:25,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:25,634 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:25,901 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-06-05 23:59:25,901 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.1 percent of original size [2021-06-05 23:59:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:25,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:25,917 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 23:59:25,921 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:25,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:25,936 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:25,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:25,937 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:26,060 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 23:59:26,060 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:26,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:26,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:26,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:26,089 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:26,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:26,103 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:26,104 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 23:59:26,105 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:26,333 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-06-05 23:59:26,334 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.5 percent of original size [2021-06-05 23:59:26,349 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 23:59:26,349 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:259 [2021-06-05 23:59:26,520 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 23:59:26,606 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 23:59:26,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80488763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:26,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:26,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 23:59:26,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038004455] [2021-06-05 23:59:26,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:26,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:26,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:26,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:26,607 INFO L87 Difference]: Start difference. First operand 1840 states and 6244 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 23:59:27,223 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-06-05 23:59:27,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:27,426 INFO L93 Difference]: Finished difference Result 2047 states and 6843 transitions. [2021-06-05 23:59:27,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 23:59:27,427 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 23:59:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:27,429 INFO L225 Difference]: With dead ends: 2047 [2021-06-05 23:59:27,429 INFO L226 Difference]: Without dead ends: 2022 [2021-06-05 23:59:27,429 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1155.1ms TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2021-06-05 23:59:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2021-06-05 23:59:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1822. [2021-06-05 23:59:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.399231191652938) internal successors, (6190), 1821 states have internal predecessors, (6190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6190 transitions. [2021-06-05 23:59:27,459 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6190 transitions. Word has length 26 [2021-06-05 23:59:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:27,459 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6190 transitions. [2021-06-05 23:59:27,459 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 23:59:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6190 transitions. [2021-06-05 23:59:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:27,461 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:27,461 INFO L554 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 23:59:27,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2581,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:27,662 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:27,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:27,662 INFO L82 PathProgramCache]: Analyzing trace with hash 827344434, now seen corresponding path program 40 times [2021-06-05 23:59:27,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:27,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179726282] [2021-06-05 23:59:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:27,995 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 23:59:27,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:27,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179726282] [2021-06-05 23:59:27,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179726282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:27,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896026651] [2021-06-05 23:59:27,995 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 23:59:28,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:28,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:28,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:28,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:28,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,231 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,231 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,243 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:28,244 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 23:59:28,245 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,256 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,256 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,270 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:28,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,271 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,281 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,282 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:28,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,296 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,306 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,306 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,319 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:28,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,322 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,335 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:28,335 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 23:59:28,338 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,350 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,350 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 23:59:28,350 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,361 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,361 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 23:59:28,361 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,372 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,373 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,385 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:28,385 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 23:59:28,387 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,397 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:28,397 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 30 treesize of output 16 [2021-06-05 23:59:28,397 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:28,410 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 42 treesize of output 27 [2021-06-05 23:59:28,411 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:28,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:28,419 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:28,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:28,420 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:28,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:28,490 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:59:28,490 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 23:59:28,675 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 23:59:28,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896026651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:28,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:28,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:59:28,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313493025] [2021-06-05 23:59:28,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:28,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:28,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:28,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:28,676 INFO L87 Difference]: Start difference. First operand 1822 states and 6190 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 23:59:29,207 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2021-06-05 23:59:29,714 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 23:59:29,847 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 23:59:30,095 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 23:59:30,377 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-06-05 23:59:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:30,433 INFO L93 Difference]: Finished difference Result 2419 states and 8019 transitions. [2021-06-05 23:59:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 23:59:30,434 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 23:59:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:30,437 INFO L225 Difference]: With dead ends: 2419 [2021-06-05 23:59:30,437 INFO L226 Difference]: Without dead ends: 2400 [2021-06-05 23:59:30,437 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1989.1ms TimeCoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 23:59:30,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2021-06-05 23:59:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 1803. [2021-06-05 23:59:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 3.3990011098779136) internal successors, (6125), 1802 states have internal predecessors, (6125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 6125 transitions. [2021-06-05 23:59:30,458 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 6125 transitions. Word has length 26 [2021-06-05 23:59:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:30,458 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 6125 transitions. [2021-06-05 23:59:30,458 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 23:59:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 6125 transitions. [2021-06-05 23:59:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:30,460 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:30,460 INFO L554 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 23:59:30,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2637,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:30,660 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:30,661 INFO L82 PathProgramCache]: Analyzing trace with hash 305289786, now seen corresponding path program 41 times [2021-06-05 23:59:30,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:30,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649843302] [2021-06-05 23:59:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:30,965 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 23:59:30,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:30,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649843302] [2021-06-05 23:59:30,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649843302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:30,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803604806] [2021-06-05 23:59:30,965 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 23:59:30,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:59:30,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:30,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:59:30,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:31,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,346 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,351 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 23:59:31,352 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,357 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,362 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:31,367 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,372 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:31,378 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,383 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:31,388 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,394 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,399 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,404 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,410 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,414 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 23:59:31,415 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:31,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:31,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:31,419 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:31,495 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 23:59:31,496 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 23:59:31,497 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 23:59:31,550 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 23:59:31,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803604806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:31,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:31,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 23:59:31,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460312785] [2021-06-05 23:59:31,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:59:31,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:31,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:59:31,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:59:31,551 INFO L87 Difference]: Start difference. First operand 1803 states and 6125 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 23:59:32,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:32,336 INFO L93 Difference]: Finished difference Result 2310 states and 7688 transitions. [2021-06-05 23:59:32,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 23:59:32,336 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 23:59:32,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:32,339 INFO L225 Difference]: With dead ends: 2310 [2021-06-05 23:59:32,339 INFO L226 Difference]: Without dead ends: 2295 [2021-06-05 23:59:32,339 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1015.3ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 23:59:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2021-06-05 23:59:32,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1848. [2021-06-05 23:59:32,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 3.394152680021657) internal successors, (6269), 1847 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 6269 transitions. [2021-06-05 23:59:32,360 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 6269 transitions. Word has length 26 [2021-06-05 23:59:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:32,360 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 6269 transitions. [2021-06-05 23:59:32,360 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 23:59:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 6269 transitions. [2021-06-05 23:59:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:32,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:32,362 INFO L554 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 23:59:32,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2662 [2021-06-05 23:59:32,562 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:32,562 INFO L82 PathProgramCache]: Analyzing trace with hash 137480694, now seen corresponding path program 42 times [2021-06-05 23:59:32,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:32,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656135702] [2021-06-05 23:59:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:32,816 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 23:59:32,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:32,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656135702] [2021-06-05 23:59:32,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656135702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:32,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368338096] [2021-06-05 23:59:32,817 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 23:59:32,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 23:59:32,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:32,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:59:32,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:33,088 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,088 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 33 treesize of output 19 [2021-06-05 23:59:33,089 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,105 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:33,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,107 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,115 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,116 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,130 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,131 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,148 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,150 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,159 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,159 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 36 treesize of output 22 [2021-06-05 23:59:33,159 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,174 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:33,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,179 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,197 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:33,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,200 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,215 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:33,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,216 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,234 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:33,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,235 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,246 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,246 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,255 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,255 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 26 treesize of output 16 [2021-06-05 23:59:33,255 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,274 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:33,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,277 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,286 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,287 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,295 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 23:59:33,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:33,296 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,307 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:33,307 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 23:59:33,310 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:33,414 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-06-05 23:59:33,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:33,426 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 23:59:33,426 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:769, output treesize:357 [2021-06-05 23:59:33,658 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-06-05 23:59:33,852 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 23:59:33,958 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 23:59:33,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368338096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:33,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:33,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 23:59:33,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119038353] [2021-06-05 23:59:33,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:33,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:33,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:33,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:33,959 INFO L87 Difference]: Start difference. First operand 1848 states and 6269 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 23:59:34,379 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2021-06-05 23:59:35,048 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 23:59:35,280 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2021-06-05 23:59:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:35,342 INFO L93 Difference]: Finished difference Result 2570 states and 8519 transitions. [2021-06-05 23:59:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 23:59:35,345 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 23:59:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:35,348 INFO L225 Difference]: With dead ends: 2570 [2021-06-05 23:59:35,348 INFO L226 Difference]: Without dead ends: 2555 [2021-06-05 23:59:35,348 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1895.4ms TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2021-06-05 23:59:35,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-06-05 23:59:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1848. [2021-06-05 23:59:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 3.394152680021657) internal successors, (6269), 1847 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 6269 transitions. [2021-06-05 23:59:35,370 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 6269 transitions. Word has length 26 [2021-06-05 23:59:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:35,370 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 6269 transitions. [2021-06-05 23:59:35,370 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 23:59:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 6269 transitions. [2021-06-05 23:59:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:35,372 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:35,372 INFO L554 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 23:59:35,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2690 [2021-06-05 23:59:35,573 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:35,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:35,573 INFO L82 PathProgramCache]: Analyzing trace with hash 436254142, now seen corresponding path program 43 times [2021-06-05 23:59:35,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:35,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049464500] [2021-06-05 23:59:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:35,791 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 23:59:35,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:35,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049464500] [2021-06-05 23:59:35,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049464500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:35,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506248062] [2021-06-05 23:59:35,791 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 23:59:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:35,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 23:59:35,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:36,103 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_327, v_prenex_329], 3=[A, v_prenex_331]} [2021-06-05 23:59:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:36,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:36,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:36,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:36,111 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:36,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:36,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:36,117 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,251 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-06-05 23:59:36,251 INFO L628 ElimStorePlain]: treesize reduction 129, result has 54.9 percent of original size [2021-06-05 23:59:36,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:36,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:36,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:36,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:36,258 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:36,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:36,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:36,263 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,304 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:36,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:36,307 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 23:59:36,308 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,346 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:36,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:36,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:36,350 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:36,386 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:36,388 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 23:59:36,388 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:325, output treesize:51 [2021-06-05 23:59:36,444 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 23:59:36,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506248062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:36,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:36,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:59:36,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124470749] [2021-06-05 23:59:36,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:36,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:36,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:36,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:36,444 INFO L87 Difference]: Start difference. First operand 1848 states and 6269 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 23:59:37,085 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-06-05 23:59:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:37,206 INFO L93 Difference]: Finished difference Result 2415 states and 7997 transitions. [2021-06-05 23:59:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 23:59:37,207 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 23:59:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:37,210 INFO L225 Difference]: With dead ends: 2415 [2021-06-05 23:59:37,210 INFO L226 Difference]: Without dead ends: 2385 [2021-06-05 23:59:37,210 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 924.2ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-06-05 23:59:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-06-05 23:59:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1850. [2021-06-05 23:59:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1849 states have (on average 3.3958896700919414) internal successors, (6279), 1849 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 6279 transitions. [2021-06-05 23:59:37,242 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 6279 transitions. Word has length 26 [2021-06-05 23:59:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:37,242 INFO L482 AbstractCegarLoop]: Abstraction has 1850 states and 6279 transitions. [2021-06-05 23:59:37,242 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 23:59:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 6279 transitions. [2021-06-05 23:59:37,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:37,244 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:37,244 INFO L554 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 23:59:37,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2741 [2021-06-05 23:59:37,445 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:37,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:37,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1514157122, now seen corresponding path program 44 times [2021-06-05 23:59:37,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:37,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998502948] [2021-06-05 23:59:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:37,747 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 23:59:37,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:37,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998502948] [2021-06-05 23:59:37,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998502948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:37,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730208335] [2021-06-05 23:59:37,747 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 23:59:37,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:37,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:37,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:59:37,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:38,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,268 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:38,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:38,272 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,291 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:38,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:38,293 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,442 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 23:59:38,442 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:38,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,460 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:38,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:38,464 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,481 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:38,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:38,483 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,621 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 23:59:38,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:38,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,639 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:38,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:38,642 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,659 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 23:59:38,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:38,661 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,923 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-06-05 23:59:38,924 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.0 percent of original size [2021-06-05 23:59:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:38,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:38,945 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:38,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:38,960 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 23:59:38,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:38,961 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:39,191 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-05 23:59:39,192 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.7 percent of original size [2021-06-05 23:59:39,206 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 23:59:39,206 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:365, output treesize:256 [2021-06-05 23:59:39,382 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 23:59:39,477 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 23:59:39,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730208335] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:39,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:39,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-06-05 23:59:39,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050500564] [2021-06-05 23:59:39,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 23:59:39,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 23:59:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-05 23:59:39,478 INFO L87 Difference]: Start difference. First operand 1850 states and 6279 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 23:59:39,910 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-06-05 23:59:40,375 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-05 23:59:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:40,400 INFO L93 Difference]: Finished difference Result 2425 states and 8078 transitions. [2021-06-05 23:59:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 23:59:40,401 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 23:59:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:40,403 INFO L225 Difference]: With dead ends: 2425 [2021-06-05 23:59:40,403 INFO L226 Difference]: Without dead ends: 2410 [2021-06-05 23:59:40,404 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1435.9ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-06-05 23:59:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-06-05 23:59:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1868. [2021-06-05 23:59:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 3.392072844134976) internal successors, (6333), 1867 states have internal predecessors, (6333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 6333 transitions. [2021-06-05 23:59:40,424 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 6333 transitions. Word has length 26 [2021-06-05 23:59:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:40,424 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 6333 transitions. [2021-06-05 23:59:40,424 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 23:59:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 6333 transitions. [2021-06-05 23:59:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:40,426 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:40,426 INFO L554 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 23:59:40,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2752,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:40,627 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:40,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:40,627 INFO L82 PathProgramCache]: Analyzing trace with hash -714815838, now seen corresponding path program 45 times [2021-06-05 23:59:40,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:40,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648876583] [2021-06-05 23:59:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:40,953 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 23:59:40,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:40,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648876583] [2021-06-05 23:59:40,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648876583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:40,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929080895] [2021-06-05 23:59:40,954 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 23:59:40,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:40,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:40,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:40,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:41,357 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 23:59:41,584 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2021-06-05 23:59:41,655 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_349, v_prenex_347], 2=[A, v_prenex_348]} [2021-06-05 23:59:41,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:41,661 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 23:59:41,662 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:41,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:41,666 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 23:59:41,667 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:41,791 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-06-05 23:59:41,791 INFO L628 ElimStorePlain]: treesize reduction 114, result has 55.3 percent of original size [2021-06-05 23:59:41,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:41,795 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 23:59:41,796 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:41,840 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:41,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:41,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:41,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:41,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:41,846 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:41,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:41,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:41,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:41,851 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:41,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:41,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:41,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:41,892 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:41,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:41,938 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 23:59:41,938 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:285, output treesize:51 [2021-06-05 23:59:41,989 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 23:59:41,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929080895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:41,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:41,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 23:59:41,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75805975] [2021-06-05 23:59:41,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 23:59:41,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:41,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 23:59:41,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:59:41,989 INFO L87 Difference]: Start difference. First operand 1868 states and 6333 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 23:59:42,725 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 23:59:42,945 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2021-06-05 23:59:43,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:43,037 INFO L93 Difference]: Finished difference Result 2321 states and 7745 transitions. [2021-06-05 23:59:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 23:59:43,037 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 23:59:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:43,040 INFO L225 Difference]: With dead ends: 2321 [2021-06-05 23:59:43,040 INFO L226 Difference]: Without dead ends: 2306 [2021-06-05 23:59:43,040 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1611.9ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-06-05 23:59:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-06-05 23:59:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1889. [2021-06-05 23:59:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 3.3887711864406778) internal successors, (6398), 1888 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 6398 transitions. [2021-06-05 23:59:43,059 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 6398 transitions. Word has length 26 [2021-06-05 23:59:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:43,060 INFO L482 AbstractCegarLoop]: Abstraction has 1889 states and 6398 transitions. [2021-06-05 23:59:43,060 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 23:59:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 6398 transitions. [2021-06-05 23:59:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:43,061 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:43,062 INFO L554 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 23:59:43,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2810 [2021-06-05 23:59:43,262 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:43,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:43,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1962618678, now seen corresponding path program 46 times [2021-06-05 23:59:43,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:43,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258571643] [2021-06-05 23:59:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:43,527 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 23:59:43,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:43,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258571643] [2021-06-05 23:59:43,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258571643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:43,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632140837] [2021-06-05 23:59:43,528 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 23:59:43,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 23:59:43,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:43,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:43,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:43,906 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 23:59:43,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:43,961 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:43,961 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 23:59:43,964 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,066 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 23:59:44,067 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:44,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,078 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 23:59:44,079 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,180 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 23:59:44,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:44,192 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:44,192 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 23:59:44,193 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,292 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:44,303 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:44,304 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:44,413 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:44,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:44,414 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,506 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:44,516 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:44,517 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 23:59:44,518 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,618 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:44,631 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,631 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 33 treesize of output 27 [2021-06-05 23:59:44,633 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,720 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:44,729 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,729 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 23:59:44,732 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:44,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:44,818 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 23:59:44,818 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 23:59:44,989 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 23:59:44,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632140837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:44,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:44,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 23:59:44,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112859867] [2021-06-05 23:59:44,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 23:59:44,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 23:59:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:59:44,990 INFO L87 Difference]: Start difference. First operand 1889 states and 6398 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 23:59:45,653 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 23:59:45,982 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-06-05 23:59:46,277 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 23:59:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:46,445 INFO L93 Difference]: Finished difference Result 2617 states and 8667 transitions. [2021-06-05 23:59:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 23:59:46,445 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 23:59:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:46,448 INFO L225 Difference]: With dead ends: 2617 [2021-06-05 23:59:46,448 INFO L226 Difference]: Without dead ends: 2602 [2021-06-05 23:59:46,449 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1803.5ms TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2021-06-05 23:59:46,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-06-05 23:59:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1886. [2021-06-05 23:59:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.389920424403183) internal successors, (6390), 1885 states have internal predecessors, (6390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6390 transitions. [2021-06-05 23:59:46,472 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6390 transitions. Word has length 26 [2021-06-05 23:59:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:46,472 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6390 transitions. [2021-06-05 23:59:46,472 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 23:59:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6390 transitions. [2021-06-05 23:59:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:46,474 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:46,474 INFO L554 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 23:59:46,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2825,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:46,676 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:46,676 INFO L82 PathProgramCache]: Analyzing trace with hash 272675774, now seen corresponding path program 47 times [2021-06-05 23:59:46,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:46,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127558379] [2021-06-05 23:59:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:46,936 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 23:59:46,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:46,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127558379] [2021-06-05 23:59:46,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127558379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:46,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597767109] [2021-06-05 23:59:46,937 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 23:59:46,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 23:59:46,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:46,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:59:46,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:47,324 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 23:59:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,435 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,435 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 16 treesize of output 18 [2021-06-05 23:59:47,438 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,448 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:47,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:47,449 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,574 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 23:59:47,575 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,586 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,586 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 23:59:47,588 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,597 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:47,597 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 23:59:47,598 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,711 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 23:59:47,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,722 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,722 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 23:59:47,726 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,735 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:47,735 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 20 [2021-06-05 23:59:47,736 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,844 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,844 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 23:59:47,845 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:47,853 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,853 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 23:59:47,855 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:47,946 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:47,951 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 23:59:47,951 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:325, output treesize:174 [2021-06-05 23:59:48,125 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 23:59:48,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597767109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:48,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:48,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 23:59:48,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679673663] [2021-06-05 23:59:48,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:48,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:48,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:48,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:48,126 INFO L87 Difference]: Start difference. First operand 1886 states and 6390 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 23:59:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:48,989 INFO L93 Difference]: Finished difference Result 2461 states and 8175 transitions. [2021-06-05 23:59:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 23:59:48,989 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 23:59:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:48,992 INFO L225 Difference]: With dead ends: 2461 [2021-06-05 23:59:48,992 INFO L226 Difference]: Without dead ends: 2436 [2021-06-05 23:59:48,992 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1206.7ms TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2021-06-05 23:59:48,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-06-05 23:59:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 1886. [2021-06-05 23:59:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.3920424403183023) internal successors, (6394), 1885 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6394 transitions. [2021-06-05 23:59:49,013 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6394 transitions. Word has length 26 [2021-06-05 23:59:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:49,014 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6394 transitions. [2021-06-05 23:59:49,014 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 23:59:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6394 transitions. [2021-06-05 23:59:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:49,015 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:49,016 INFO L554 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 23:59:49,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2842 [2021-06-05 23:59:49,217 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1537750790, now seen corresponding path program 48 times [2021-06-05 23:59:49,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:49,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648227084] [2021-06-05 23:59:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:49,529 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 23:59:49,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:49,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648227084] [2021-06-05 23:59:49,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648227084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:49,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682041829] [2021-06-05 23:59:49,529 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 23:59:49,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 23:59:49,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 23:59:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:49,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,728 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:49,728 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,736 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,736 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 23:59:49,736 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,744 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,744 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 23:59:49,744 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,755 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:49,755 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 23:59:49,756 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,766 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:49,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:49,768 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:49,778 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 23:59:49,789 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,797 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,797 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 23:59:49,797 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,807 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:49,807 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 23:59:49,808 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:49,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 23:59:49,821 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,828 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,828 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 23:59:49,829 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,836 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,837 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 23:59:49,837 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,847 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:49,847 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 23:59:49,849 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,859 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 23:59:49,859 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 23:59:49,860 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,869 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:49,869 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 28 treesize of output 24 [2021-06-05 23:59:49,872 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,879 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 31 treesize of output 19 [2021-06-05 23:59:49,880 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:49,885 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 23:59:49,885 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 23:59:49,885 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:49,951 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:49,953 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 23:59:49,953 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 23:59:50,136 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 23:59:50,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682041829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:50,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:50,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:59:50,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619816105] [2021-06-05 23:59:50,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 23:59:50,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:50,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 23:59:50,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-05 23:59:50,136 INFO L87 Difference]: Start difference. First operand 1886 states and 6394 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 23:59:50,802 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-06-05 23:59:50,965 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-06-05 23:59:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:51,028 INFO L93 Difference]: Finished difference Result 2412 states and 8043 transitions. [2021-06-05 23:59:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 23:59:51,028 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 23:59:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:51,031 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 23:59:51,031 INFO L226 Difference]: Without dead ends: 2397 [2021-06-05 23:59:51,031 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1172.6ms TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-06-05 23:59:51,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-06-05 23:59:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1886. [2021-06-05 23:59:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.3920424403183023) internal successors, (6394), 1885 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6394 transitions. [2021-06-05 23:59:51,052 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6394 transitions. Word has length 26 [2021-06-05 23:59:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:51,052 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6394 transitions. [2021-06-05 23:59:51,052 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 23:59:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6394 transitions. [2021-06-05 23:59:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:51,054 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:51,054 INFO L554 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 23:59:51,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2875,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 23:59:51,255 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:51,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1872442310, now seen corresponding path program 55 times [2021-06-05 23:59:51,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:51,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257088044] [2021-06-05 23:59:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:51,558 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 23:59:51,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:51,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257088044] [2021-06-05 23:59:51,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257088044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:51,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212101600] [2021-06-05 23:59:51,559 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 23:59:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:51,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:51,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:51,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:51,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:51,974 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:51,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:51,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:51,981 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:51,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:51,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:51,988 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:51,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:51,994 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:51,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:51,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,001 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:52,008 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,015 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,021 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,028 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,035 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,041 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,048 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,054 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 23:59:52,054 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,060 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:52,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:52,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:59:52,064 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:52,087 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-05 23:59:52,087 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 23:59:52,087 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 23:59:52,113 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 23:59:52,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212101600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:52,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:52,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 23:59:52,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307628715] [2021-06-05 23:59:52,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 23:59:52,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 23:59:52,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:59:52,114 INFO L87 Difference]: Start difference. First operand 1886 states and 6394 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 23:59:52,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:52,777 INFO L93 Difference]: Finished difference Result 2181 states and 7107 transitions. [2021-06-05 23:59:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 23:59:52,778 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 23:59:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:52,781 INFO L225 Difference]: With dead ends: 2181 [2021-06-05 23:59:52,781 INFO L226 Difference]: Without dead ends: 2144 [2021-06-05 23:59:52,781 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 827.6ms TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-06-05 23:59:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-06-05 23:59:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1906. [2021-06-05 23:59:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 3.391076115485564) internal successors, (6460), 1905 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 6460 transitions. [2021-06-05 23:59:52,802 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 6460 transitions. Word has length 26 [2021-06-05 23:59:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:52,802 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 6460 transitions. [2021-06-05 23:59:52,802 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 23:59:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 6460 transitions. [2021-06-05 23:59:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:52,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:52,804 INFO L554 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 23:59:53,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2892 [2021-06-05 23:59:53,004 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:53,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:53,004 INFO L82 PathProgramCache]: Analyzing trace with hash -804567746, now seen corresponding path program 56 times [2021-06-05 23:59:53,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:53,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609165223] [2021-06-05 23:59:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:53,317 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 23:59:53,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:53,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609165223] [2021-06-05 23:59:53,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609165223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:53,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26053589] [2021-06-05 23:59:53,318 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 23:59:53,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 23:59:53,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:53,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 23:59:53,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:53,608 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_376, v_prenex_378], 6=[A, v_prenex_374]} [2021-06-05 23:59:53,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:53,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:53,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 20 treesize of output 7 [2021-06-05 23:59:53,616 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:53,621 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 27 treesize of output 13 [2021-06-05 23:59:53,622 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:53,717 INFO L628 ElimStorePlain]: treesize reduction 156, result has 44.9 percent of original size [2021-06-05 23:59:53,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:53,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,720 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 23:59:53,722 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:53,753 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:53,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:53,757 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 23:59:53,757 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:53,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:53,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:53,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:53,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 23:59:53,790 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 23:59:53,791 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:53,815 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:53,817 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 23:59:53,817 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:341, output treesize:41 [2021-06-05 23:59:53,859 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 23:59:53,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26053589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:53,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:53,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 23:59:53,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206874861] [2021-06-05 23:59:53,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 23:59:53,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:53,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 23:59:53,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 23:59:53,860 INFO L87 Difference]: Start difference. First operand 1906 states and 6460 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 23:59:54,873 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 23:59:54,999 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-05 23:59:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 23:59:55,110 INFO L93 Difference]: Finished difference Result 2358 states and 7788 transitions. [2021-06-05 23:59:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 23:59:55,110 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 23:59:55,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 23:59:55,113 INFO L225 Difference]: With dead ends: 2358 [2021-06-05 23:59:55,113 INFO L226 Difference]: Without dead ends: 2312 [2021-06-05 23:59:55,114 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1364.7ms TimeCoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 23:59:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-06-05 23:59:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1906. [2021-06-05 23:59:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 3.3858267716535435) internal successors, (6450), 1905 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 23:59:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 6450 transitions. [2021-06-05 23:59:55,134 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 6450 transitions. Word has length 26 [2021-06-05 23:59:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 23:59:55,134 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 6450 transitions. [2021-06-05 23:59:55,134 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 23:59:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 6450 transitions. [2021-06-05 23:59:55,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 23:59:55,136 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 23:59:55,136 INFO L554 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 23:59:55,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2988 [2021-06-05 23:59:55,337 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 23:59:55,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 23:59:55,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1833133118, now seen corresponding path program 57 times [2021-06-05 23:59:55,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 23:59:55,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145826619] [2021-06-05 23:59:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 23:59:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 23:59:55,647 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 23:59:55,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 23:59:55,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145826619] [2021-06-05 23:59:55,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145826619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:55,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819228121] [2021-06-05 23:59:55,647 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 23:59:55,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 23:59:55,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 23:59:55,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 23:59:55,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 23:59:56,041 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 23:59:56,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,313 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 23:59:56,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:56,315 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:56,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,342 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:59:56,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:56,344 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:56,711 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-06-05 23:59:56,712 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:56,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,746 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:59:56,746 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 23:59:56,750 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:56,773 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 23:59:56,773 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 23:59:56,774 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:57,098 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 23:59:57,099 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:57,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,130 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 23:59:57,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:57,134 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,167 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 23:59:57,167 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 23:59:57,170 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:57,471 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 23:59:57,471 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:57,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,498 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 23:59:57,498 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 23:59:57,499 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:57,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,521 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:57,521 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 23:59:57,527 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:57,812 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 23:59:57,812 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:57,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,845 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:59:57,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 35 [2021-06-05 23:59:57,846 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:57,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:57,869 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:57,869 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 23:59:57,874 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,389 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-06-05 23:59:58,389 INFO L628 ElimStorePlain]: treesize reduction 33, result has 94.4 percent of original size [2021-06-05 23:59:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,417 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:59:58,417 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 30 treesize of output 32 [2021-06-05 23:59:58,421 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,433 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 23:59:58,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 23:59:58,433 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,652 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 23:59:58,652 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:58,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,682 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:59:58,682 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 23:59:58,684 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,703 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 23:59:58,704 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 23:59:58,705 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,907 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 23:59:58,908 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:58,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,937 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 23:59:58,937 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 23:59:58,940 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:58,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 23:59:58,951 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 23:59:58,951 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 23:59:58,952 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 23:59:59,116 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 23:59:59,116 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 23:59:59,127 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 23:59:59,127 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:801, output treesize:340 [2021-06-05 23:59:59,276 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 23:59:59,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819228121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 23:59:59,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 23:59:59,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 23:59:59,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886518526] [2021-06-05 23:59:59,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 23:59:59,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 23:59:59,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 23:59:59,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 23:59:59,276 INFO L87 Difference]: Start difference. First operand 1906 states and 6450 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) [2021-06-06 00:00:00,243 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-06 00:00:00,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:00,518 INFO L93 Difference]: Finished difference Result 2168 states and 7234 transitions. [2021-06-06 00:00:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:00:00,518 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 [2021-06-06 00:00:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:00,521 INFO L225 Difference]: With dead ends: 2168 [2021-06-06 00:00:00,521 INFO L226 Difference]: Without dead ends: 2153 [2021-06-06 00:00:00,521 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1458.6ms TimeCoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:00:00,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-06-06 00:00:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1921. [2021-06-06 00:00:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 3.3921875) internal successors, (6513), 1920 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 6513 transitions. [2021-06-06 00:00:00,540 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 6513 transitions. Word has length 26 [2021-06-06 00:00:00,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:00,541 INFO L482 AbstractCegarLoop]: Abstraction has 1921 states and 6513 transitions. [2021-06-06 00:00:00,541 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) [2021-06-06 00:00:00,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 6513 transitions. [2021-06-06 00:00:00,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:00,543 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:00,543 INFO L554 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] [2021-06-06 00:00:00,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3002,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:00,743 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash 179857598, now seen corresponding path program 49 times [2021-06-06 00:00:00,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:00,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142612318] [2021-06-06 00:00:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:01,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:01,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142612318] [2021-06-06 00:00:01,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142612318] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:01,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535818653] [2021-06-06 00:00:01,146 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 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 [2021-06-06 00:00:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:01,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:00:01,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:01,425 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-06 00:00:01,597 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-06 00:00:01,943 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-06-06 00:00:02,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:02,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:02,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:02,021 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:02,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:02,026 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,153 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-06-06 00:00:02,154 INFO L628 ElimStorePlain]: treesize reduction 44, result has 75.1 percent of original size [2021-06-06 00:00:02,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,178 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 [2021-06-06 00:00:02,180 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:02,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:02,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:02,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:02,244 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:02,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:02,249 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:00:02,250 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:02,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:02,298 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:00:02,298 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 9 variables, input treesize:215, output treesize:51 [2021-06-06 00:00:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:02,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535818653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:02,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:02,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:02,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142172269] [2021-06-06 00:00:02,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:02,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:02,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:02,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:02,354 INFO L87 Difference]: Start difference. First operand 1921 states and 6513 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) [2021-06-06 00:00:03,614 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-06-06 00:00:04,058 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2021-06-06 00:00:04,543 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 87 [2021-06-06 00:00:04,998 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 92 [2021-06-06 00:00:05,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:05,204 INFO L93 Difference]: Finished difference Result 2468 states and 8139 transitions. [2021-06-06 00:00:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:00:05,204 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 [2021-06-06 00:00:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:05,207 INFO L225 Difference]: With dead ends: 2468 [2021-06-06 00:00:05,207 INFO L226 Difference]: Without dead ends: 2453 [2021-06-06 00:00:05,208 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3319.6ms TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:00:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2021-06-06 00:00:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 1932. [2021-06-06 00:00:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 3.392542723977214) internal successors, (6551), 1931 states have internal predecessors, (6551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 6551 transitions. [2021-06-06 00:00:05,231 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 6551 transitions. Word has length 26 [2021-06-06 00:00:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:05,231 INFO L482 AbstractCegarLoop]: Abstraction has 1932 states and 6551 transitions. [2021-06-06 00:00:05,231 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) [2021-06-06 00:00:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 6551 transitions. [2021-06-06 00:00:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:05,233 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:05,233 INFO L554 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] [2021-06-06 00:00:05,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3067 [2021-06-06 00:00:05,434 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:05,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:05,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1730239162, now seen corresponding path program 58 times [2021-06-06 00:00:05,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:05,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073895924] [2021-06-06 00:00:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:05,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:05,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073895924] [2021-06-06 00:00:05,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073895924] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:05,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237323362] [2021-06-06 00:00:05,701 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 [2021-06-06 00:00:05,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:00:05,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:05,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:00:05,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:06,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,220 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,226 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,233 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,240 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,247 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,255 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,262 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,269 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,276 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,283 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,289 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:00:06,290 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,309 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,316 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:00:06,322 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:06,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:06,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:06,326 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:06,349 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-06 00:00:06,350 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:00:06,350 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:00:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:06,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237323362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:06,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:06,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:00:06,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879880773] [2021-06-06 00:00:06,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:00:06,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:06,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:00:06,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:00:06,366 INFO L87 Difference]: Start difference. First operand 1932 states and 6551 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) 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) [2021-06-06 00:00:06,948 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-06 00:00:07,212 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-06-06 00:00:07,509 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-06-06 00:00:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:07,781 INFO L93 Difference]: Finished difference Result 2505 states and 8099 transitions. [2021-06-06 00:00:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 00:00:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) 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 26 [2021-06-06 00:00:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:07,785 INFO L225 Difference]: With dead ends: 2505 [2021-06-06 00:00:07,785 INFO L226 Difference]: Without dead ends: 2483 [2021-06-06 00:00:07,785 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1490.8ms TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:00:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-06-06 00:00:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 1948. [2021-06-06 00:00:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 3.3954802259887007) internal successors, (6611), 1947 states have internal predecessors, (6611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 6611 transitions. [2021-06-06 00:00:07,816 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 6611 transitions. Word has length 26 [2021-06-06 00:00:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:07,816 INFO L482 AbstractCegarLoop]: Abstraction has 1948 states and 6611 transitions. [2021-06-06 00:00:07,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.6470588235294117) 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) [2021-06-06 00:00:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 6611 transitions. [2021-06-06 00:00:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:07,819 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:07,819 INFO L554 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] [2021-06-06 00:00:08,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3079,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:08,019 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:08,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1769727974, now seen corresponding path program 50 times [2021-06-06 00:00:08,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:08,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109438736] [2021-06-06 00:00:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:08,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:08,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109438736] [2021-06-06 00:00:08,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109438736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:08,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50542950] [2021-06-06 00:00:08,368 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 [2021-06-06 00:00:08,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:00:08,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:08,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:00:08,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:08,854 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-06 00:00:09,166 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:00:09,306 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_421, v_prenex_422, v_prenex_425], 6=[v_prenex_426, A, v_prenex_420, v_prenex_423, v_prenex_424]} [2021-06-06 00:00:09,332 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:09,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:09,334 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:09,713 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 136 [2021-06-06 00:00:09,714 INFO L628 ElimStorePlain]: treesize reduction 307, result has 56.1 percent of original size [2021-06-06 00:00:09,732 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:09,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:09,733 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:09,880 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-06 00:00:09,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:09,903 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:09,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:09,905 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,053 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:00:10,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:10,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 18 treesize of output 28 [2021-06-06 00:00:10,086 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,231 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-06 00:00:10,231 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:10,254 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:00:10,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 25 treesize of output 27 [2021-06-06 00:00:10,258 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,399 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:00:10,399 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:10,418 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:00:10,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23 treesize of output 23 [2021-06-06 00:00:10,420 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,555 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-06 00:00:10,555 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:10,574 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:00:10,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 [2021-06-06 00:00:10,578 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,701 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-06 00:00:10,702 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:10,718 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:00:10,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 26 [2021-06-06 00:00:10,720 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:10,841 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-06 00:00:10,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:10,854 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:10,854 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:706, output treesize:429 [2021-06-06 00:00:11,081 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-06-06 00:00:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:11,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50542950] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:11,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:11,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:00:11,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193819357] [2021-06-06 00:00:11,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:11,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:11,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:11,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:11,194 INFO L87 Difference]: Start difference. First operand 1948 states and 6611 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) [2021-06-06 00:00:11,726 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-06-06 00:00:12,072 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-06-06 00:00:12,580 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2021-06-06 00:00:12,823 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-06-06 00:00:13,513 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2021-06-06 00:00:14,291 WARN L205 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2021-06-06 00:00:15,080 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 95 [2021-06-06 00:00:15,646 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2021-06-06 00:00:16,531 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2021-06-06 00:00:17,009 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 84 [2021-06-06 00:00:17,670 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 101 [2021-06-06 00:00:18,106 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-06-06 00:00:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:18,372 INFO L93 Difference]: Finished difference Result 2657 states and 8685 transitions. [2021-06-06 00:00:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:00:18,372 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 [2021-06-06 00:00:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:18,376 INFO L225 Difference]: With dead ends: 2657 [2021-06-06 00:00:18,376 INFO L226 Difference]: Without dead ends: 2642 [2021-06-06 00:00:18,376 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 7276.1ms TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:00:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-06-06 00:00:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1952. [2021-06-06 00:00:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 3.3956945156330085) internal successors, (6625), 1951 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 6625 transitions. [2021-06-06 00:00:18,399 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 6625 transitions. Word has length 26 [2021-06-06 00:00:18,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:18,399 INFO L482 AbstractCegarLoop]: Abstraction has 1952 states and 6625 transitions. [2021-06-06 00:00:18,399 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) [2021-06-06 00:00:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 6625 transitions. [2021-06-06 00:00:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:18,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:18,401 INFO L554 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] [2021-06-06 00:00:18,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3193,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:18,603 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash 152195194, now seen corresponding path program 51 times [2021-06-06 00:00:18,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:18,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570041955] [2021-06-06 00:00:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:18,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:18,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570041955] [2021-06-06 00:00:18,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570041955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:18,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051022352] [2021-06-06 00:00:18,905 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 [2021-06-06 00:00:18,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:00:18,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:18,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:18,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:19,225 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-06 00:00:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:19,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,281 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 [2021-06-06 00:00:19,284 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:19,391 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:00:19,391 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:19,404 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:19,404 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 [2021-06-06 00:00:19,405 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:19,507 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:00:19,507 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:19,519 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,519 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 [2021-06-06 00:00:19,522 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:19,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:19,633 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:19,634 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 [2021-06-06 00:00:19,635 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:19,729 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:19,741 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,741 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 [2021-06-06 00:00:19,742 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:19,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:19,845 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:19,848 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:19,936 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:19,946 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:19,947 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 [2021-06-06 00:00:19,948 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:20,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:20,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:20,045 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:20,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:20,046 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:20,134 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:20,139 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:20,140 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-06 00:00:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:20,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051022352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:20,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:20,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:20,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759532869] [2021-06-06 00:00:20,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:20,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:20,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:20,324 INFO L87 Difference]: Start difference. First operand 1952 states and 6625 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) [2021-06-06 00:00:21,327 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-06-06 00:00:21,610 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-06 00:00:21,741 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-06-06 00:00:22,070 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-06-06 00:00:22,299 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-06 00:00:22,489 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-06-06 00:00:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:22,766 INFO L93 Difference]: Finished difference Result 2972 states and 9683 transitions. [2021-06-06 00:00:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:00:22,767 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 [2021-06-06 00:00:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:22,770 INFO L225 Difference]: With dead ends: 2972 [2021-06-06 00:00:22,770 INFO L226 Difference]: Without dead ends: 2942 [2021-06-06 00:00:22,771 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2661.1ms TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:00:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-06-06 00:00:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1949. [2021-06-06 00:00:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 3.3983572895277208) internal successors, (6620), 1948 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 6620 transitions. [2021-06-06 00:00:22,796 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 6620 transitions. Word has length 26 [2021-06-06 00:00:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:22,796 INFO L482 AbstractCegarLoop]: Abstraction has 1949 states and 6620 transitions. [2021-06-06 00:00:22,796 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) [2021-06-06 00:00:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 6620 transitions. [2021-06-06 00:00:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:22,798 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:22,798 INFO L554 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] [2021-06-06 00:00:22,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3230 [2021-06-06 00:00:22,999 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:22,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1956232686, now seen corresponding path program 59 times [2021-06-06 00:00:22,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:22,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268664917] [2021-06-06 00:00:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:23,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:23,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268664917] [2021-06-06 00:00:23,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268664917] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:23,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486381814] [2021-06-06 00:00:23,262 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 [2021-06-06 00:00:23,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:00:23,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:23,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:23,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:23,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:23,755 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:23,763 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:23,770 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:00:23,778 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:00:23,786 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:00:23,794 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:23,801 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,808 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 35 treesize of output 19 [2021-06-06 00:00:23,809 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,817 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 35 treesize of output 19 [2021-06-06 00:00:23,818 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,825 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 34 treesize of output 16 [2021-06-06 00:00:23,826 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,833 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 28 treesize of output 13 [2021-06-06 00:00:23,833 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:23,840 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,847 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 30 treesize of output 16 [2021-06-06 00:00:23,848 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,854 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 39 treesize of output 19 [2021-06-06 00:00:23,855 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:23,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:23,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:23,859 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:23,882 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-06 00:00:23,883 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:00:23,883 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:00:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:23,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486381814] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:23,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:23,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:00:23,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852603936] [2021-06-06 00:00:23,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:23,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:23,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:23,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:23,916 INFO L87 Difference]: Start difference. First operand 1949 states and 6620 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) [2021-06-06 00:00:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:25,130 INFO L93 Difference]: Finished difference Result 3403 states and 10936 transitions. [2021-06-06 00:00:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:00:25,130 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 [2021-06-06 00:00:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:25,135 INFO L225 Difference]: With dead ends: 3403 [2021-06-06 00:00:25,135 INFO L226 Difference]: Without dead ends: 3373 [2021-06-06 00:00:25,135 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1277.3ms TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:00:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2021-06-06 00:00:25,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 2041. [2021-06-06 00:00:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2040 states have (on average 3.4073529411764705) internal successors, (6951), 2040 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 6951 transitions. [2021-06-06 00:00:25,165 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 6951 transitions. Word has length 26 [2021-06-06 00:00:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:25,165 INFO L482 AbstractCegarLoop]: Abstraction has 2041 states and 6951 transitions. [2021-06-06 00:00:25,165 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) [2021-06-06 00:00:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 6951 transitions. [2021-06-06 00:00:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:25,167 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:25,167 INFO L554 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] [2021-06-06 00:00:25,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3245,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:25,368 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash -505085958, now seen corresponding path program 60 times [2021-06-06 00:00:25,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:25,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70757149] [2021-06-06 00:00:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:25,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:25,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70757149] [2021-06-06 00:00:25,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70757149] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:25,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987757985] [2021-06-06 00:00:25,600 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 [2021-06-06 00:00:25,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:00:25,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:25,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:25,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:26,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,174 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-06 00:00:26,174 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 39 treesize of output 41 [2021-06-06 00:00:26,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,207 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:26,208 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 59 [2021-06-06 00:00:26,216 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,260 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-06 00:00:26,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 38 [2021-06-06 00:00:26,264 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,291 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:00:26,292 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,309 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:00:26,310 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,337 INFO L354 Elim1Store]: treesize reduction 31, result has 24.4 percent of original size [2021-06-06 00:00:26,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 28 [2021-06-06 00:00:26,338 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,367 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:26,367 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 25 treesize of output 53 [2021-06-06 00:00:26,374 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,391 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:00:26,391 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,423 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-06 00:00:26,423 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 30 treesize of output 38 [2021-06-06 00:00:26,427 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,444 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,444 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 [2021-06-06 00:00:26,444 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,471 INFO L354 Elim1Store]: treesize reduction 31, result has 24.4 percent of original size [2021-06-06 00:00:26,471 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 25 [2021-06-06 00:00:26,472 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,489 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 1 [2021-06-06 00:00:26,490 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,516 INFO L354 Elim1Store]: treesize reduction 31, result has 24.4 percent of original size [2021-06-06 00:00:26,516 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 25 [2021-06-06 00:00:26,517 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,533 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:00:26,534 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,550 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,550 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 [2021-06-06 00:00:26,551 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:26,561 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:00:26,561 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 [2021-06-06 00:00:26,562 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:26,748 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2021-06-06 00:00:26,748 INFO L628 ElimStorePlain]: treesize reduction 193, result has 41.2 percent of original size [2021-06-06 00:00:26,751 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:00:26,751 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:953, output treesize:150 [2021-06-06 00:00:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:26,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987757985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:26,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:26,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:00:26,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138954384] [2021-06-06 00:00:26,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:26,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:26,930 INFO L87 Difference]: Start difference. First operand 2041 states and 6951 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) [2021-06-06 00:00:28,550 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-06 00:00:28,816 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-06 00:00:29,145 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-06 00:00:29,307 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-06 00:00:29,593 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-06 00:00:29,751 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-06-06 00:00:29,940 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-06-06 00:00:30,431 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2021-06-06 00:00:30,603 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-06-06 00:00:31,023 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-06-06 00:00:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:31,189 INFO L93 Difference]: Finished difference Result 3293 states and 10339 transitions. [2021-06-06 00:00:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:00:31,190 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 [2021-06-06 00:00:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:31,194 INFO L225 Difference]: With dead ends: 3293 [2021-06-06 00:00:31,194 INFO L226 Difference]: Without dead ends: 3220 [2021-06-06 00:00:31,194 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 4155.8ms TimeCoverageRelationStatistics Valid=647, Invalid=2893, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:00:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2021-06-06 00:00:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2049. [2021-06-06 00:00:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 3.4072265625) internal successors, (6978), 2048 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 6978 transitions. [2021-06-06 00:00:31,221 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 6978 transitions. Word has length 26 [2021-06-06 00:00:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:31,221 INFO L482 AbstractCegarLoop]: Abstraction has 2049 states and 6978 transitions. [2021-06-06 00:00:31,221 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) [2021-06-06 00:00:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 6978 transitions. [2021-06-06 00:00:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:31,223 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:31,224 INFO L554 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] [2021-06-06 00:00:31,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3341 [2021-06-06 00:00:31,433 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash -272116042, now seen corresponding path program 52 times [2021-06-06 00:00:31,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:31,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672325432] [2021-06-06 00:00:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:31,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:31,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672325432] [2021-06-06 00:00:31,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672325432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:31,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273242955] [2021-06-06 00:00:31,802 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 [2021-06-06 00:00:31,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:00:31,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:31,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:00:31,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:32,211 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-06 00:00:32,311 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_460, v_prenex_455, v_prenex_457], 6=[A, v_prenex_450, v_prenex_453, v_prenex_444, v_prenex_446]} [2021-06-06 00:00:32,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:32,338 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:32,339 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:00:32,340 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:32,691 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 158 [2021-06-06 00:00:32,691 INFO L628 ElimStorePlain]: treesize reduction 283, result has 56.5 percent of original size [2021-06-06 00:00:32,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:32,716 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:32,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:32,717 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:32,852 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-06-06 00:00:32,853 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:32,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:32,873 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:32,873 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-06 00:00:32,876 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,155 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2021-06-06 00:00:33,156 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.4 percent of original size [2021-06-06 00:00:33,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:33,173 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,173 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:00:33,178 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,439 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2021-06-06 00:00:33,439 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.3 percent of original size [2021-06-06 00:00:33,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:33,458 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:00:33,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:33,460 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,582 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-06-06 00:00:33,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:33,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:33,603 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,718 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:00:33,718 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:33,738 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:00:33,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:33,742 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,851 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-06 00:00:33,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:33,870 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:00:33,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:33,871 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:33,980 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:00:33,980 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:33,997 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:33,997 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:658, output treesize:346 [2021-06-06 00:00:34,194 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-06 00:00:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:34,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273242955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:34,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:34,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:00:34,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062022024] [2021-06-06 00:00:34,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:34,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:34,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:34,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:34,287 INFO L87 Difference]: Start difference. First operand 2049 states and 6978 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) [2021-06-06 00:00:35,444 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2021-06-06 00:00:35,953 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-06-06 00:00:36,162 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:00:36,523 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-06-06 00:00:36,828 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2021-06-06 00:00:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:36,881 INFO L93 Difference]: Finished difference Result 2966 states and 9810 transitions. [2021-06-06 00:00:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:00:36,881 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 [2021-06-06 00:00:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:36,885 INFO L225 Difference]: With dead ends: 2966 [2021-06-06 00:00:36,885 INFO L226 Difference]: Without dead ends: 2951 [2021-06-06 00:00:36,885 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2998.0ms TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:00:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-06-06 00:00:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2061. [2021-06-06 00:00:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2060 states have (on average 3.404368932038835) internal successors, (7013), 2060 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 7013 transitions. [2021-06-06 00:00:36,910 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 7013 transitions. Word has length 26 [2021-06-06 00:00:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:36,910 INFO L482 AbstractCegarLoop]: Abstraction has 2061 states and 7013 transitions. [2021-06-06 00:00:36,910 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) [2021-06-06 00:00:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 7013 transitions. [2021-06-06 00:00:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:36,912 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:36,913 INFO L554 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] [2021-06-06 00:00:37,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3477,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:37,113 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:37,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1962058946, now seen corresponding path program 53 times [2021-06-06 00:00:37,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:37,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032835213] [2021-06-06 00:00:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:37,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:37,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032835213] [2021-06-06 00:00:37,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032835213] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:37,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164874607] [2021-06-06 00:00:37,467 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 [2021-06-06 00:00:37,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:00:37,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:00:37,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:37,974 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-06 00:00:38,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,074 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,075 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 [2021-06-06 00:00:38,078 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,088 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:38,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:38,089 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,209 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-06 00:00:38,210 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,221 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,222 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 [2021-06-06 00:00:38,223 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,232 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 [2021-06-06 00:00:38,234 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,348 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-06 00:00:38,348 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,360 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,360 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 [2021-06-06 00:00:38,361 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,370 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:38,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:38,371 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,474 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-06 00:00:38,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,485 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:38,486 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 [2021-06-06 00:00:38,487 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:38,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,494 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 28 treesize of output 24 [2021-06-06 00:00:38,498 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:38,598 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:38,603 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:38,603 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:341, output treesize:174 [2021-06-06 00:00:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:38,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164874607] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:38,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:38,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:00:38,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147227138] [2021-06-06 00:00:38,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:38,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:38,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:38,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:38,782 INFO L87 Difference]: Start difference. First operand 2061 states and 7013 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) [2021-06-06 00:00:39,290 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-06-06 00:00:39,489 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-06-06 00:00:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:39,912 INFO L93 Difference]: Finished difference Result 2612 states and 8738 transitions. [2021-06-06 00:00:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:00:39,912 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 [2021-06-06 00:00:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:39,916 INFO L225 Difference]: With dead ends: 2612 [2021-06-06 00:00:39,916 INFO L226 Difference]: Without dead ends: 2587 [2021-06-06 00:00:39,916 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1653.5ms TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:00:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2021-06-06 00:00:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2061. [2021-06-06 00:00:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2060 states have (on average 3.404368932038835) internal successors, (7013), 2060 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 7013 transitions. [2021-06-06 00:00:39,940 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 7013 transitions. Word has length 26 [2021-06-06 00:00:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:39,940 INFO L482 AbstractCegarLoop]: Abstraction has 2061 states and 7013 transitions. [2021-06-06 00:00:39,940 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) [2021-06-06 00:00:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 7013 transitions. [2021-06-06 00:00:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:39,942 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:39,942 INFO L554 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] [2021-06-06 00:00:40,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3519 [2021-06-06 00:00:40,142 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:40,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:40,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1086187700, now seen corresponding path program 54 times [2021-06-06 00:00:40,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:40,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529267739] [2021-06-06 00:00:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:40,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:40,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529267739] [2021-06-06 00:00:40,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529267739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:40,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544708611] [2021-06-06 00:00:40,561 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 [2021-06-06 00:00:40,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:00:40,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:40,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:00:40,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:40,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,794 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,794 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 28 treesize of output 16 [2021-06-06 00:00:40,795 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,804 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,804 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 [2021-06-06 00:00:40,804 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,813 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,813 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 [2021-06-06 00:00:40,814 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,825 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:40,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:40,827 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,837 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:40,837 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 [2021-06-06 00:00:40,838 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,848 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,848 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 [2021-06-06 00:00:40,849 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,858 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,858 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 [2021-06-06 00:00:40,858 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,869 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,869 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 26 treesize of output 24 [2021-06-06 00:00:40,870 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,880 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 16 treesize of output 18 [2021-06-06 00:00:40,883 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,891 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:40,892 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,900 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 [2021-06-06 00:00:40,901 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:40,916 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,928 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:00:40,929 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 28 treesize of output 20 [2021-06-06 00:00:40,930 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,939 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:40,939 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 [2021-06-06 00:00:40,943 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,950 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,950 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 [2021-06-06 00:00:40,951 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:40,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:40,956 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:00:40,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:40,957 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:41,024 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:41,026 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:00:41,026 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-06 00:00:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:41,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544708611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:41,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:41,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:00:41,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985577104] [2021-06-06 00:00:41,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:41,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:41,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:41,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:41,214 INFO L87 Difference]: Start difference. First operand 2061 states and 7013 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) [2021-06-06 00:00:42,524 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-06 00:00:42,775 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-06-06 00:00:42,937 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-06 00:00:43,184 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-06 00:00:43,498 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-06-06 00:00:43,775 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2021-06-06 00:00:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:43,832 INFO L93 Difference]: Finished difference Result 2664 states and 8880 transitions. [2021-06-06 00:00:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:00:43,832 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 [2021-06-06 00:00:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:43,836 INFO L225 Difference]: With dead ends: 2664 [2021-06-06 00:00:43,836 INFO L226 Difference]: Without dead ends: 2649 [2021-06-06 00:00:43,836 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2705.5ms TimeCoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:00:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2021-06-06 00:00:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2049. [2021-06-06 00:00:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 3.4072265625) internal successors, (6978), 2048 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 6978 transitions. [2021-06-06 00:00:43,859 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 6978 transitions. Word has length 26 [2021-06-06 00:00:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:43,859 INFO L482 AbstractCegarLoop]: Abstraction has 2049 states and 6978 transitions. [2021-06-06 00:00:43,859 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) [2021-06-06 00:00:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 6978 transitions. [2021-06-06 00:00:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:43,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:43,861 INFO L554 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] [2021-06-06 00:00:44,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3553,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:00:44,062 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:44,062 INFO L82 PathProgramCache]: Analyzing trace with hash 935709652, now seen corresponding path program 61 times [2021-06-06 00:00:44,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:44,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055732509] [2021-06-06 00:00:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:44,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:44,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055732509] [2021-06-06 00:00:44,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055732509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:44,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844653872] [2021-06-06 00:00:44,398 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 [2021-06-06 00:00:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:44,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:44,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:44,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,839 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 35 treesize of output 19 [2021-06-06 00:00:44,840 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,847 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,854 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,861 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 30 treesize of output 16 [2021-06-06 00:00:44,861 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,868 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 30 treesize of output 16 [2021-06-06 00:00:44,868 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,875 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 28 treesize of output 13 [2021-06-06 00:00:44,875 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,882 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,889 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,895 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 34 treesize of output 16 [2021-06-06 00:00:44,896 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,912 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:00:44,913 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,919 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,926 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,932 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:00:44,932 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,939 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:44,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:44,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:44,949 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:44,972 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-06 00:00:44,973 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:00:44,973 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:00:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:44,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844653872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:44,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:44,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-06 00:00:44,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784008990] [2021-06-06 00:00:44,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:00:44,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:44,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:00:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:00:44,989 INFO L87 Difference]: Start difference. First operand 2049 states and 6978 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) [2021-06-06 00:00:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:47,219 INFO L93 Difference]: Finished difference Result 2625 states and 8625 transitions. [2021-06-06 00:00:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:00:47,219 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 [2021-06-06 00:00:47,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:47,223 INFO L225 Difference]: With dead ends: 2625 [2021-06-06 00:00:47,223 INFO L226 Difference]: Without dead ends: 2603 [2021-06-06 00:00:47,223 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 2198.7ms TimeCoverageRelationStatistics Valid=525, Invalid=2127, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:00:47,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-06 00:00:47,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2047. [2021-06-06 00:00:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 3.40811339198436) internal successors, (6973), 2046 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 6973 transitions. [2021-06-06 00:00:47,248 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 6973 transitions. Word has length 26 [2021-06-06 00:00:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:47,248 INFO L482 AbstractCegarLoop]: Abstraction has 2047 states and 6973 transitions. [2021-06-06 00:00:47,248 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) [2021-06-06 00:00:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 6973 transitions. [2021-06-06 00:00:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:47,251 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:47,251 INFO L554 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] [2021-06-06 00:00:47,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3570 [2021-06-06 00:00:47,453 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:47,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:47,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1861203518, now seen corresponding path program 62 times [2021-06-06 00:00:47,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:47,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764002566] [2021-06-06 00:00:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:47,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:47,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764002566] [2021-06-06 00:00:47,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764002566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:47,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67758000] [2021-06-06 00:00:47,725 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 [2021-06-06 00:00:47,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:00:47,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:47,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:47,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:48,089 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_470], 6=[v_prenex_472, v_prenex_474]} [2021-06-06 00:00:48,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:48,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:48,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2021-06-06 00:00:48,097 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:00:48,102 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,204 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-06-06 00:00:48,205 INFO L628 ElimStorePlain]: treesize reduction 162, result has 46.2 percent of original size [2021-06-06 00:00:48,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:48,209 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 25 treesize of output 13 [2021-06-06 00:00:48,210 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:48,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:48,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:00:48,248 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,279 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:48,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:48,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:48,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:00:48,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 29 treesize of output 13 [2021-06-06 00:00:48,284 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:48,311 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:48,313 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:00:48,313 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:365, output treesize:33 [2021-06-06 00:00:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:48,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67758000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:48,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:48,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:00:48,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279608216] [2021-06-06 00:00:48,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:00:48,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:48,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:00:48,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:00:48,358 INFO L87 Difference]: Start difference. First operand 2047 states and 6973 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) [2021-06-06 00:00:49,638 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-06 00:00:49,871 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-06 00:00:50,006 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-06 00:00:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:00:50,104 INFO L93 Difference]: Finished difference Result 2959 states and 9765 transitions. [2021-06-06 00:00:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:00:50,105 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 [2021-06-06 00:00:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:00:50,108 INFO L225 Difference]: With dead ends: 2959 [2021-06-06 00:00:50,108 INFO L226 Difference]: Without dead ends: 2919 [2021-06-06 00:00:50,108 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1847.3ms TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:00:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-06-06 00:00:50,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2063. [2021-06-06 00:00:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 2062 states have (on average 3.41270611057226) internal successors, (7037), 2062 states have internal predecessors, (7037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:00:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 7037 transitions. [2021-06-06 00:00:50,133 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 7037 transitions. Word has length 26 [2021-06-06 00:00:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:00:50,133 INFO L482 AbstractCegarLoop]: Abstraction has 2063 states and 7037 transitions. [2021-06-06 00:00:50,133 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) [2021-06-06 00:00:50,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 7037 transitions. [2021-06-06 00:00:50,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:00:50,135 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:00:50,135 INFO L554 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] [2021-06-06 00:00:50,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3660 [2021-06-06 00:00:50,336 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:00:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:00:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1211067586, now seen corresponding path program 63 times [2021-06-06 00:00:50,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:00:50,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911803362] [2021-06-06 00:00:50,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:00:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:00:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:50,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:00:50,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911803362] [2021-06-06 00:00:50,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911803362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:50,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984558609] [2021-06-06 00:00:50,576 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 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 [2021-06-06 00:00:50,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:00:50,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:00:50,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:00:50,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:00:50,975 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-06 00:00:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:51,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:51,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:51,155 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 35 treesize of output 51 [2021-06-06 00:00:51,161 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:51,207 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-06 00:00:51,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 39 [2021-06-06 00:00:51,212 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:52,308 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2021-06-06 00:00:52,308 INFO L628 ElimStorePlain]: treesize reduction 42, result has 95.5 percent of original size [2021-06-06 00:00:52,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:52,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:52,364 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-06-06 00:00:52,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 43 [2021-06-06 00:00:52,367 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:52,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:52,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:52,417 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2021-06-06 00:00:52,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 47 [2021-06-06 00:00:52,423 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:53,527 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 188 DAG size of output: 183 [2021-06-06 00:00:53,527 INFO L628 ElimStorePlain]: treesize reduction 24, result has 97.4 percent of original size [2021-06-06 00:00:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:53,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:53,569 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-06 00:00:53,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:00:53,572 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:53,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:53,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:53,608 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-06 00:00:53,608 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 28 treesize of output 32 [2021-06-06 00:00:53,611 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:54,604 WARN L205 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2021-06-06 00:00:54,604 INFO L628 ElimStorePlain]: treesize reduction 44, result has 94.9 percent of original size [2021-06-06 00:00:54,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:54,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:54,646 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-06-06 00:00:54,647 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 28 treesize of output 28 [2021-06-06 00:00:54,648 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:54,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:54,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:54,683 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-06-06 00:00:54,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 31 [2021-06-06 00:00:54,684 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:55,190 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-06-06 00:00:55,191 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:55,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:55,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:55,237 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-06 00:00:55,237 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 33 treesize of output 39 [2021-06-06 00:00:55,242 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:55,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:55,279 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-06 00:00:55,279 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 28 treesize of output 36 [2021-06-06 00:00:55,283 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,127 WARN L205 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2021-06-06 00:00:56,128 INFO L628 ElimStorePlain]: treesize reduction 18, result has 97.7 percent of original size [2021-06-06 00:00:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,176 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2021-06-06 00:00:56,176 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 44 [2021-06-06 00:00:56,183 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:56,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 45 [2021-06-06 00:00:56,222 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,639 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-06-06 00:00:56,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:56,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,678 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-06 00:00:56,678 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 33 treesize of output 35 [2021-06-06 00:00:56,681 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:56,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:56,715 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-06 00:00:56,716 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 33 treesize of output 35 [2021-06-06 00:00:56,717 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:57,485 WARN L205 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2021-06-06 00:00:57,486 INFO L628 ElimStorePlain]: treesize reduction 11, result has 98.4 percent of original size [2021-06-06 00:00:57,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:57,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:57,535 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-06-06 00:00:57,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 43 [2021-06-06 00:00:57,539 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:57,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:00:57,575 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-06 00:00:57,575 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 26 treesize of output 36 [2021-06-06 00:00:57,578 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:00:57,942 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:00:57,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:00:57,995 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 15 xjuncts. [2021-06-06 00:00:57,996 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 24 variables, input treesize:945, output treesize:1467 [2021-06-06 00:00:58,423 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 49 [2021-06-06 00:00:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:00:58,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984558609] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:00:58,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:00:58,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-06 00:00:58,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838776394] [2021-06-06 00:00:58,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:00:58,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:00:58,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:00:58,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:00:58,529 INFO L87 Difference]: Start difference. First operand 2063 states and 7037 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 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) [2021-06-06 00:00:59,121 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 31 [2021-06-06 00:00:59,345 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 37 [2021-06-06 00:00:59,732 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2021-06-06 00:01:00,199 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-06-06 00:01:00,353 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2021-06-06 00:01:00,664 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2021-06-06 00:01:01,123 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-06-06 00:01:01,361 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-06-06 00:01:01,549 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2021-06-06 00:01:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:01,627 INFO L93 Difference]: Finished difference Result 2842 states and 9205 transitions. [2021-06-06 00:01:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 00:01:01,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 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 [2021-06-06 00:01:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:01,631 INFO L225 Difference]: With dead ends: 2842 [2021-06-06 00:01:01,631 INFO L226 Difference]: Without dead ends: 2798 [2021-06-06 00:01:01,631 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 3535.3ms TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:01:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-06-06 00:01:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2136. [2021-06-06 00:01:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 2135 states have (on average 3.406088992974239) internal successors, (7272), 2135 states have internal predecessors, (7272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 7272 transitions. [2021-06-06 00:01:01,656 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 7272 transitions. Word has length 26 [2021-06-06 00:01:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:01,656 INFO L482 AbstractCegarLoop]: Abstraction has 2136 states and 7272 transitions. [2021-06-06 00:01:01,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 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) [2021-06-06 00:01:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 7272 transitions. [2021-06-06 00:01:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:01,658 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:01,658 INFO L554 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] [2021-06-06 00:01:01,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3674,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:01,859 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:01,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:01,859 INFO L82 PathProgramCache]: Analyzing trace with hash -550813574, now seen corresponding path program 55 times [2021-06-06 00:01:01,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:01,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486029308] [2021-06-06 00:01:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:02,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:02,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486029308] [2021-06-06 00:01:02,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486029308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:02,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23990840] [2021-06-06 00:01:02,184 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 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 [2021-06-06 00:01:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:02,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:01:02,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:02,641 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-06 00:01:02,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:02,750 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:01:02,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:02,751 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:02,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:02,772 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:02,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 29 [2021-06-06 00:01:02,777 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:03,091 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 147 [2021-06-06 00:01:03,092 INFO L628 ElimStorePlain]: treesize reduction 194, result has 64.3 percent of original size [2021-06-06 00:01:03,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:03,114 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:03,114 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 33 treesize of output 31 [2021-06-06 00:01:03,115 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:03,240 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-06 00:01:03,241 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:03,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:03,261 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:01:03,261 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 21 treesize of output 21 [2021-06-06 00:01:03,263 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:03,390 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-06 00:01:03,391 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:03,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:03,414 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:03,414 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:01:03,416 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:03,537 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-06-06 00:01:03,538 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:03,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:03,559 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:01:03,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:03,562 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:03,681 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-06 00:01:03,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:03,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:03,700 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:01:03,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:03,701 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:03,816 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-06 00:01:03,816 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:03,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:03,833 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:03,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:03,838 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:04,061 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 120 [2021-06-06 00:01:04,061 INFO L628 ElimStorePlain]: treesize reduction 12, result has 95.8 percent of original size [2021-06-06 00:01:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:04,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:04,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:04,082 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:04,299 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2021-06-06 00:01:04,299 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.0 percent of original size [2021-06-06 00:01:04,315 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:01:04,315 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 24 variables, input treesize:583, output treesize:253 [2021-06-06 00:01:04,498 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-06-06 00:01:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:04,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23990840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:04,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:04,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:01:04,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579805984] [2021-06-06 00:01:04,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:01:04,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:01:04,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:01:04,588 INFO L87 Difference]: Start difference. First operand 2136 states and 7272 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) [2021-06-06 00:01:05,625 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2021-06-06 00:01:05,836 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-06 00:01:06,034 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-06 00:01:06,423 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-06-06 00:01:06,851 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-06-06 00:01:06,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:06,909 INFO L93 Difference]: Finished difference Result 3051 states and 10102 transitions. [2021-06-06 00:01:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:01:06,910 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 [2021-06-06 00:01:06,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:06,913 INFO L225 Difference]: With dead ends: 3051 [2021-06-06 00:01:06,914 INFO L226 Difference]: Without dead ends: 3036 [2021-06-06 00:01:06,914 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2624.4ms TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:01:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2021-06-06 00:01:06,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2138. [2021-06-06 00:01:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2137 states have (on average 3.402433317735143) internal successors, (7271), 2137 states have internal predecessors, (7271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 7271 transitions. [2021-06-06 00:01:06,940 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 7271 transitions. Word has length 26 [2021-06-06 00:01:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:06,940 INFO L482 AbstractCegarLoop]: Abstraction has 2138 states and 7271 transitions. [2021-06-06 00:01:06,940 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) [2021-06-06 00:01:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 7271 transitions. [2021-06-06 00:01:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:06,942 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:06,942 INFO L554 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] [2021-06-06 00:01:07,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3759 [2021-06-06 00:01:07,143 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2054210818, now seen corresponding path program 56 times [2021-06-06 00:01:07,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:07,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553934773] [2021-06-06 00:01:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:07,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:07,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553934773] [2021-06-06 00:01:07,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553934773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:07,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484899157] [2021-06-06 00:01:07,562 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 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 [2021-06-06 00:01:07,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:07,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:07,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:01:07,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:07,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,767 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:07,768 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,777 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,777 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 [2021-06-06 00:01:07,777 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,786 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,786 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 [2021-06-06 00:01:07,786 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,798 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:07,798 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 [2021-06-06 00:01:07,799 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,809 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:07,810 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 [2021-06-06 00:01:07,811 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,821 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:07,821 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 [2021-06-06 00:01:07,822 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,831 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 [2021-06-06 00:01:07,831 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,841 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:07,841 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 [2021-06-06 00:01:07,842 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:07,852 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 [2021-06-06 00:01:07,855 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,863 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,863 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 [2021-06-06 00:01:07,863 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,872 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 [2021-06-06 00:01:07,872 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,882 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:07,882 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 [2021-06-06 00:01:07,884 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,894 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:07,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:07,895 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:07,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:07,908 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,914 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:07,915 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:07,920 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:01:07,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:07,921 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:07,988 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:07,990 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:01:07,990 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-06 00:01:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:08,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484899157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:08,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:08,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:01:08,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199134245] [2021-06-06 00:01:08,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:01:08,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:08,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:01:08,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:01:08,191 INFO L87 Difference]: Start difference. First operand 2138 states and 7271 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) [2021-06-06 00:01:08,490 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-06-06 00:01:09,289 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-06-06 00:01:09,463 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-06 00:01:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:09,542 INFO L93 Difference]: Finished difference Result 2900 states and 9631 transitions. [2021-06-06 00:01:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:01:09,542 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 [2021-06-06 00:01:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:09,546 INFO L225 Difference]: With dead ends: 2900 [2021-06-06 00:01:09,546 INFO L226 Difference]: Without dead ends: 2875 [2021-06-06 00:01:09,546 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1583.0ms TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:01:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-06-06 00:01:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2131. [2021-06-06 00:01:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 2130 states have (on average 3.3995305164319247) internal successors, (7241), 2130 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 7241 transitions. [2021-06-06 00:01:09,570 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 7241 transitions. Word has length 26 [2021-06-06 00:01:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:09,571 INFO L482 AbstractCegarLoop]: Abstraction has 2131 states and 7241 transitions. [2021-06-06 00:01:09,571 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) [2021-06-06 00:01:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 7241 transitions. [2021-06-06 00:01:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:09,573 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:09,573 INFO L554 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] [2021-06-06 00:01:09,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3800,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:09,774 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:09,774 INFO L82 PathProgramCache]: Analyzing trace with hash 807490168, now seen corresponding path program 57 times [2021-06-06 00:01:09,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:09,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800265563] [2021-06-06 00:01:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:10,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:10,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800265563] [2021-06-06 00:01:10,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800265563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:10,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356831113] [2021-06-06 00:01:10,116 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 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 [2021-06-06 00:01:10,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:01:10,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:10,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:01:10,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:10,634 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-06 00:01:10,953 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2021-06-06 00:01:11,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:11,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:11,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:11,097 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:11,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:11,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:11,103 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:11,264 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-06-06 00:01:11,264 INFO L628 ElimStorePlain]: treesize reduction 143, result has 51.5 percent of original size [2021-06-06 00:01:11,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,269 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 [2021-06-06 00:01:11,270 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:11,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:11,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:11,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:11,335 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 21 treesize of output 13 [2021-06-06 00:01:11,336 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:11,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:11,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:11,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:11,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:11,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:11,392 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 [2021-06-06 00:01:11,393 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:11,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:11,452 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:01:11,452 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:333, output treesize:51 [2021-06-06 00:01:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:11,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356831113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:11,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:11,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:01:11,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251989211] [2021-06-06 00:01:11,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:01:11,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:11,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:01:11,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:01:11,503 INFO L87 Difference]: Start difference. First operand 2131 states and 7241 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) [2021-06-06 00:01:12,209 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-06 00:01:12,551 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-06 00:01:12,967 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-06-06 00:01:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:13,078 INFO L93 Difference]: Finished difference Result 2671 states and 8927 transitions. [2021-06-06 00:01:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:01:13,078 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 [2021-06-06 00:01:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:13,081 INFO L225 Difference]: With dead ends: 2671 [2021-06-06 00:01:13,081 INFO L226 Difference]: Without dead ends: 2656 [2021-06-06 00:01:13,081 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2110.3ms TimeCoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:01:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-06-06 00:01:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2119. [2021-06-06 00:01:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 2118 states have (on average 3.4022662889518416) internal successors, (7206), 2118 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 7206 transitions. [2021-06-06 00:01:13,105 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 7206 transitions. Word has length 26 [2021-06-06 00:01:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:13,105 INFO L482 AbstractCegarLoop]: Abstraction has 2119 states and 7206 transitions. [2021-06-06 00:01:13,105 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) [2021-06-06 00:01:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 7206 transitions. [2021-06-06 00:01:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:13,107 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:13,107 INFO L554 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] [2021-06-06 00:01:13,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3817,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:13,307 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:13,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:13,308 INFO L82 PathProgramCache]: Analyzing trace with hash 243784254, now seen corresponding path program 58 times [2021-06-06 00:01:13,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:13,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762582027] [2021-06-06 00:01:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:13,491 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2021-06-06 00:01:13,621 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2021-06-06 00:01:13,797 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2021-06-06 00:01:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:13,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:13,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762582027] [2021-06-06 00:01:13,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762582027] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:13,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592170991] [2021-06-06 00:01:13,903 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 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 [2021-06-06 00:01:13,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:13,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:13,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:01:13,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:14,261 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-06 00:01:14,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,371 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:14,371 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 [2021-06-06 00:01:14,372 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,381 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,381 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 [2021-06-06 00:01:14,384 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,502 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:01:14,503 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,515 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:14,515 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 21 treesize of output 17 [2021-06-06 00:01:14,516 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,525 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,525 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 [2021-06-06 00:01:14,528 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,632 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:01:14,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,645 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:01:14,645 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 [2021-06-06 00:01:14,646 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,655 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,655 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 [2021-06-06 00:01:14,656 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,756 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-06 00:01:14,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,768 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:01:14,769 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:14,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,778 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 [2021-06-06 00:01:14,780 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:14,871 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:01:14,876 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:01:14,877 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:333, output treesize:174 [2021-06-06 00:01:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:15,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592170991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:15,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:15,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:01:15,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670398754] [2021-06-06 00:01:15,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:01:15,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:01:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:01:15,061 INFO L87 Difference]: Start difference. First operand 2119 states and 7206 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) [2021-06-06 00:01:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:16,079 INFO L93 Difference]: Finished difference Result 2740 states and 9175 transitions. [2021-06-06 00:01:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:01:16,080 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 [2021-06-06 00:01:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:16,084 INFO L225 Difference]: With dead ends: 2740 [2021-06-06 00:01:16,084 INFO L226 Difference]: Without dead ends: 2725 [2021-06-06 00:01:16,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1550.0ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:01:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-06-06 00:01:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2113. [2021-06-06 00:01:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 3.403409090909091) internal successors, (7188), 2112 states have internal predecessors, (7188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 7188 transitions. [2021-06-06 00:01:16,117 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 7188 transitions. Word has length 26 [2021-06-06 00:01:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:16,117 INFO L482 AbstractCegarLoop]: Abstraction has 2113 states and 7188 transitions. [2021-06-06 00:01:16,117 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) [2021-06-06 00:01:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 7188 transitions. [2021-06-06 00:01:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:01:16,119 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:16,119 INFO L554 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] [2021-06-06 00:01:16,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3836 [2021-06-06 00:01:16,320 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:16,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1128807410, now seen corresponding path program 64 times [2021-06-06 00:01:16,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:16,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495514917] [2021-06-06 00:01:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:16,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:16,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495514917] [2021-06-06 00:01:16,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495514917] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:16,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407302252] [2021-06-06 00:01:16,624 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 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 [2021-06-06 00:01:16,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:16,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:16,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:01:16,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:17,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,038 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:01:17,039 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,046 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,053 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,059 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,066 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,073 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,080 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,086 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 28 treesize of output 13 [2021-06-06 00:01:17,086 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,093 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,099 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,106 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:01:17,113 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,119 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,125 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 [2021-06-06 00:01:17,126 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:01:17,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:01:17,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:01:17,130 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:01:17,155 INFO L628 ElimStorePlain]: treesize reduction 32, result has 45.8 percent of original size [2021-06-06 00:01:17,156 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:01:17,156 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:01:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:17,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407302252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:17,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:17,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:01:17,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799366147] [2021-06-06 00:01:17,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:01:17,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:17,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:01:17,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:01:17,189 INFO L87 Difference]: Start difference. First operand 2113 states and 7188 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) [2021-06-06 00:01:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:18,585 INFO L93 Difference]: Finished difference Result 2992 states and 9892 transitions. [2021-06-06 00:01:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:01:18,585 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 [2021-06-06 00:01:18,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:18,589 INFO L225 Difference]: With dead ends: 2992 [2021-06-06 00:01:18,589 INFO L226 Difference]: Without dead ends: 2955 [2021-06-06 00:01:18,589 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1410.2ms TimeCoverageRelationStatistics Valid=344, Invalid=1296, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:01:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-06-06 00:01:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2104. [2021-06-06 00:01:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 3.4013314312886354) internal successors, (7153), 2103 states have internal predecessors, (7153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 7153 transitions. [2021-06-06 00:01:18,615 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 7153 transitions. Word has length 26 [2021-06-06 00:01:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:18,615 INFO L482 AbstractCegarLoop]: Abstraction has 2104 states and 7153 transitions. [2021-06-06 00:01:18,615 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) [2021-06-06 00:01:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 7153 transitions. [2021-06-06 00:01:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:18,617 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:18,618 INFO L554 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] [2021-06-06 00:01:18,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3869,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:18,818 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:18,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:18,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1868598568, now seen corresponding path program 59 times [2021-06-06 00:01:18,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:18,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762092590] [2021-06-06 00:01:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:18,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:18,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762092590] [2021-06-06 00:01:18,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762092590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:18,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983988410] [2021-06-06 00:01:18,865 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 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 [2021-06-06 00:01:18,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:01:18,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:18,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:18,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:18,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983988410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:18,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:18,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:01:18,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782187447] [2021-06-06 00:01:18,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:01:18,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:18,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:01:18,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:01:18,976 INFO L87 Difference]: Start difference. First operand 2104 states and 7153 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) [2021-06-06 00:01:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:19,836 INFO L93 Difference]: Finished difference Result 5069 states and 15729 transitions. [2021-06-06 00:01:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:01:19,837 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 [2021-06-06 00:01:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:19,843 INFO L225 Difference]: With dead ends: 5069 [2021-06-06 00:01:19,843 INFO L226 Difference]: Without dead ends: 5069 [2021-06-06 00:01:19,844 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 511.7ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:01:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2021-06-06 00:01:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 2297. [2021-06-06 00:01:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 3.451219512195122) internal successors, (7924), 2296 states have internal predecessors, (7924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 7924 transitions. [2021-06-06 00:01:19,888 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 7924 transitions. Word has length 28 [2021-06-06 00:01:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:19,888 INFO L482 AbstractCegarLoop]: Abstraction has 2297 states and 7924 transitions. [2021-06-06 00:01:19,888 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) [2021-06-06 00:01:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 7924 transitions. [2021-06-06 00:01:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:19,890 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:19,891 INFO L554 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] [2021-06-06 00:01:20,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3959 [2021-06-06 00:01:20,091 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:20,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:20,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1450049884, now seen corresponding path program 60 times [2021-06-06 00:01:20,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:20,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091068983] [2021-06-06 00:01:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:20,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:20,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091068983] [2021-06-06 00:01:20,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091068983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:20,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934345944] [2021-06-06 00:01:20,147 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 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 [2021-06-06 00:01:20,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:01:20,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:20,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:20,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:20,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934345944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:20,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:20,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:01:20,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437385921] [2021-06-06 00:01:20,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:01:20,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:20,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:01:20,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:01:20,279 INFO L87 Difference]: Start difference. First operand 2297 states and 7924 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) [2021-06-06 00:01:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:21,460 INFO L93 Difference]: Finished difference Result 6700 states and 20456 transitions. [2021-06-06 00:01:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:01:21,460 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 [2021-06-06 00:01:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:21,468 INFO L225 Difference]: With dead ends: 6700 [2021-06-06 00:01:21,468 INFO L226 Difference]: Without dead ends: 6700 [2021-06-06 00:01:21,469 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 679.4ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:01:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-06-06 00:01:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 2308. [2021-06-06 00:01:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 3.4581707845687037) internal successors, (7978), 2307 states have internal predecessors, (7978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 7978 transitions. [2021-06-06 00:01:21,525 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 7978 transitions. Word has length 28 [2021-06-06 00:01:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:21,525 INFO L482 AbstractCegarLoop]: Abstraction has 2308 states and 7978 transitions. [2021-06-06 00:01:21,525 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) [2021-06-06 00:01:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 7978 transitions. [2021-06-06 00:01:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:21,527 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:21,527 INFO L554 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] [2021-06-06 00:01:21,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3960,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:21,729 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:21,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2017001964, now seen corresponding path program 61 times [2021-06-06 00:01:21,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:21,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106879434] [2021-06-06 00:01:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:21,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:21,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106879434] [2021-06-06 00:01:21,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106879434] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:21,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13698632] [2021-06-06 00:01:21,767 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 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 [2021-06-06 00:01:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:21,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:21,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:21,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13698632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:21,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:21,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:01:21,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351694267] [2021-06-06 00:01:21,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:01:21,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:21,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:01:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:01:21,886 INFO L87 Difference]: Start difference. First operand 2308 states and 7978 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) [2021-06-06 00:01:23,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:23,023 INFO L93 Difference]: Finished difference Result 6089 states and 18976 transitions. [2021-06-06 00:01:23,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:01:23,024 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 [2021-06-06 00:01:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:23,032 INFO L225 Difference]: With dead ends: 6089 [2021-06-06 00:01:23,032 INFO L226 Difference]: Without dead ends: 6089 [2021-06-06 00:01:23,033 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 681.6ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-06 00:01:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2021-06-06 00:01:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 2256. [2021-06-06 00:01:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 3.4350332594235033) internal successors, (7746), 2255 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 7746 transitions. [2021-06-06 00:01:23,081 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 7746 transitions. Word has length 28 [2021-06-06 00:01:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:23,081 INFO L482 AbstractCegarLoop]: Abstraction has 2256 states and 7746 transitions. [2021-06-06 00:01:23,081 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) [2021-06-06 00:01:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 7746 transitions. [2021-06-06 00:01:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:23,084 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:23,084 INFO L554 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] [2021-06-06 00:01:23,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3961 [2021-06-06 00:01:23,293 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:23,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1095937010, now seen corresponding path program 62 times [2021-06-06 00:01:23,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:23,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78625664] [2021-06-06 00:01:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:23,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:23,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78625664] [2021-06-06 00:01:23,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78625664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:23,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012360323] [2021-06-06 00:01:23,330 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 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 [2021-06-06 00:01:23,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:23,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:23,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:23,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:23,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012360323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:23,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:23,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:01:23,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026221730] [2021-06-06 00:01:23,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:01:23,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:23,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:01:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:01:23,447 INFO L87 Difference]: Start difference. First operand 2256 states and 7746 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) [2021-06-06 00:01:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:24,445 INFO L93 Difference]: Finished difference Result 5162 states and 15913 transitions. [2021-06-06 00:01:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:01:24,445 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 [2021-06-06 00:01:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:24,452 INFO L225 Difference]: With dead ends: 5162 [2021-06-06 00:01:24,452 INFO L226 Difference]: Without dead ends: 5162 [2021-06-06 00:01:24,452 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 601.9ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:01:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2021-06-06 00:01:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 2269. [2021-06-06 00:01:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2268 states have (on average 3.432980599647266) internal successors, (7786), 2268 states have internal predecessors, (7786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 7786 transitions. [2021-06-06 00:01:24,493 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 7786 transitions. Word has length 28 [2021-06-06 00:01:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:24,493 INFO L482 AbstractCegarLoop]: Abstraction has 2269 states and 7786 transitions. [2021-06-06 00:01:24,493 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) [2021-06-06 00:01:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 7786 transitions. [2021-06-06 00:01:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:24,496 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:24,496 INFO L554 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] [2021-06-06 00:01:24,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3962,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:24,705 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1989400020, now seen corresponding path program 65 times [2021-06-06 00:01:24,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:24,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91208531] [2021-06-06 00:01:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:24,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:24,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91208531] [2021-06-06 00:01:24,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91208531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:24,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654890196] [2021-06-06 00:01:24,743 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 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 [2021-06-06 00:01:24,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:01:24,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:24,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:24,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:24,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654890196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:24,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:24,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:01:24,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838634003] [2021-06-06 00:01:24,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:24,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:24,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:24,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:24,849 INFO L87 Difference]: Start difference. First operand 2269 states and 7786 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) [2021-06-06 00:01:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:25,386 INFO L93 Difference]: Finished difference Result 4589 states and 14330 transitions. [2021-06-06 00:01:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:01:25,386 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 [2021-06-06 00:01:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:25,392 INFO L225 Difference]: With dead ends: 4589 [2021-06-06 00:01:25,392 INFO L226 Difference]: Without dead ends: 4589 [2021-06-06 00:01:25,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 293.7ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:01:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2021-06-06 00:01:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 2339. [2021-06-06 00:01:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 2338 states have (on average 3.417023096663815) internal successors, (7989), 2338 states have internal predecessors, (7989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 7989 transitions. [2021-06-06 00:01:25,446 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 7989 transitions. Word has length 28 [2021-06-06 00:01:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:25,446 INFO L482 AbstractCegarLoop]: Abstraction has 2339 states and 7989 transitions. [2021-06-06 00:01:25,446 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) [2021-06-06 00:01:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 7989 transitions. [2021-06-06 00:01:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:25,449 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:25,449 INFO L554 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] [2021-06-06 00:01:25,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3963 [2021-06-06 00:01:25,650 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:25,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1848031388, now seen corresponding path program 63 times [2021-06-06 00:01:25,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:25,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285189463] [2021-06-06 00:01:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:25,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:25,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285189463] [2021-06-06 00:01:25,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285189463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:25,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741218720] [2021-06-06 00:01:25,675 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 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 [2021-06-06 00:01:25,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:01:25,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:25,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:01:25,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:25,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741218720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:25,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:25,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:01:25,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005569105] [2021-06-06 00:01:25,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:01:25,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:01:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:01:25,756 INFO L87 Difference]: Start difference. First operand 2339 states and 7989 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) [2021-06-06 00:01:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:25,912 INFO L93 Difference]: Finished difference Result 3853 states and 12551 transitions. [2021-06-06 00:01:25,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:01:25,913 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 [2021-06-06 00:01:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:25,917 INFO L225 Difference]: With dead ends: 3853 [2021-06-06 00:01:25,917 INFO L226 Difference]: Without dead ends: 3829 [2021-06-06 00:01:25,917 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:01:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2021-06-06 00:01:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 2701. [2021-06-06 00:01:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 3.4851851851851854) internal successors, (9410), 2700 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 9410 transitions. [2021-06-06 00:01:25,953 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 9410 transitions. Word has length 28 [2021-06-06 00:01:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:25,953 INFO L482 AbstractCegarLoop]: Abstraction has 2701 states and 9410 transitions. [2021-06-06 00:01:25,953 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) [2021-06-06 00:01:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 9410 transitions. [2021-06-06 00:01:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:25,956 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:25,956 INFO L554 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] [2021-06-06 00:01:26,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3964 [2021-06-06 00:01:26,157 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:26,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1411062680, now seen corresponding path program 64 times [2021-06-06 00:01:26,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:26,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720509655] [2021-06-06 00:01:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:26,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:26,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720509655] [2021-06-06 00:01:26,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720509655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:26,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239051913] [2021-06-06 00:01:26,190 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 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 [2021-06-06 00:01:26,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:26,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:26,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:26,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:26,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239051913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:26,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:26,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:01:26,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725755040] [2021-06-06 00:01:26,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:26,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:26,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:26,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:26,284 INFO L87 Difference]: Start difference. First operand 2701 states and 9410 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) [2021-06-06 00:01:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:26,823 INFO L93 Difference]: Finished difference Result 4524 states and 14456 transitions. [2021-06-06 00:01:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:01:26,824 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 [2021-06-06 00:01:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:26,829 INFO L225 Difference]: With dead ends: 4524 [2021-06-06 00:01:26,829 INFO L226 Difference]: Without dead ends: 4477 [2021-06-06 00:01:26,829 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 321.0ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:01:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2021-06-06 00:01:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 2866. [2021-06-06 00:01:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2865 states have (on average 3.505759162303665) internal successors, (10044), 2865 states have internal predecessors, (10044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 10044 transitions. [2021-06-06 00:01:26,880 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 10044 transitions. Word has length 28 [2021-06-06 00:01:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:26,880 INFO L482 AbstractCegarLoop]: Abstraction has 2866 states and 10044 transitions. [2021-06-06 00:01:26,880 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) [2021-06-06 00:01:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 10044 transitions. [2021-06-06 00:01:26,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:26,883 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:26,883 INFO L554 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] [2021-06-06 00:01:27,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3965,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:27,097 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1347815140, now seen corresponding path program 65 times [2021-06-06 00:01:27,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:27,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496205559] [2021-06-06 00:01:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:27,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:27,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496205559] [2021-06-06 00:01:27,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496205559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:27,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5760006] [2021-06-06 00:01:27,128 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 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 [2021-06-06 00:01:27,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:01:27,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:27,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:27,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:27,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5760006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:27,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:27,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:01:27,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139606852] [2021-06-06 00:01:27,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:27,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:27,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:27,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:27,235 INFO L87 Difference]: Start difference. First operand 2866 states and 10044 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) [2021-06-06 00:01:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:27,884 INFO L93 Difference]: Finished difference Result 4809 states and 15088 transitions. [2021-06-06 00:01:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:01:27,884 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 [2021-06-06 00:01:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:27,890 INFO L225 Difference]: With dead ends: 4809 [2021-06-06 00:01:27,890 INFO L226 Difference]: Without dead ends: 4783 [2021-06-06 00:01:27,890 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 400.9ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:01:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2021-06-06 00:01:27,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 2887. [2021-06-06 00:01:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2886 states have (on average 3.512127512127512) internal successors, (10136), 2886 states have internal predecessors, (10136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 10136 transitions. [2021-06-06 00:01:27,934 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 10136 transitions. Word has length 28 [2021-06-06 00:01:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:27,934 INFO L482 AbstractCegarLoop]: Abstraction has 2887 states and 10136 transitions. [2021-06-06 00:01:27,934 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) [2021-06-06 00:01:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 10136 transitions. [2021-06-06 00:01:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:27,937 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:27,937 INFO L554 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] [2021-06-06 00:01:28,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3966,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:28,138 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:28,138 INFO L82 PathProgramCache]: Analyzing trace with hash -675402358, now seen corresponding path program 66 times [2021-06-06 00:01:28,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:28,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025546482] [2021-06-06 00:01:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:28,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:28,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025546482] [2021-06-06 00:01:28,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025546482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:28,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457617122] [2021-06-06 00:01:28,168 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 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 [2021-06-06 00:01:28,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:01:28,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:28,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:28,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:28,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457617122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:28,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:28,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:01:28,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021011246] [2021-06-06 00:01:28,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:28,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:28,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:28,288 INFO L87 Difference]: Start difference. First operand 2887 states and 10136 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) [2021-06-06 00:01:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:28,892 INFO L93 Difference]: Finished difference Result 4801 states and 15088 transitions. [2021-06-06 00:01:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:01:28,892 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 [2021-06-06 00:01:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:28,898 INFO L225 Difference]: With dead ends: 4801 [2021-06-06 00:01:28,898 INFO L226 Difference]: Without dead ends: 4786 [2021-06-06 00:01:28,898 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 416.0ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:01:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2021-06-06 00:01:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 2887. [2021-06-06 00:01:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2886 states have (on average 3.5076230076230077) internal successors, (10123), 2886 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 10123 transitions. [2021-06-06 00:01:28,940 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 10123 transitions. Word has length 28 [2021-06-06 00:01:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:28,940 INFO L482 AbstractCegarLoop]: Abstraction has 2887 states and 10123 transitions. [2021-06-06 00:01:28,940 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) [2021-06-06 00:01:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 10123 transitions. [2021-06-06 00:01:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:28,943 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:28,943 INFO L554 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] [2021-06-06 00:01:29,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3967,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:29,143 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:29,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1724201280, now seen corresponding path program 67 times [2021-06-06 00:01:29,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:29,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626252698] [2021-06-06 00:01:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:29,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:29,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626252698] [2021-06-06 00:01:29,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626252698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:29,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101738332] [2021-06-06 00:01:29,175 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 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 [2021-06-06 00:01:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:29,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:29,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:29,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101738332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:29,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:29,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:01:29,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191547875] [2021-06-06 00:01:29,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:01:29,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:29,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:01:29,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:01:29,261 INFO L87 Difference]: Start difference. First operand 2887 states and 10123 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) [2021-06-06 00:01:29,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:29,756 INFO L93 Difference]: Finished difference Result 5555 states and 17807 transitions. [2021-06-06 00:01:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:01:29,756 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 [2021-06-06 00:01:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:29,763 INFO L225 Difference]: With dead ends: 5555 [2021-06-06 00:01:29,763 INFO L226 Difference]: Without dead ends: 5508 [2021-06-06 00:01:29,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 294.1ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:01:29,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-06 00:01:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3028. [2021-06-06 00:01:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 3027 states have (on average 3.5500495540138752) internal successors, (10746), 3027 states have internal predecessors, (10746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 10746 transitions. [2021-06-06 00:01:29,812 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 10746 transitions. Word has length 28 [2021-06-06 00:01:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:29,813 INFO L482 AbstractCegarLoop]: Abstraction has 3028 states and 10746 transitions. [2021-06-06 00:01:29,813 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) [2021-06-06 00:01:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 10746 transitions. [2021-06-06 00:01:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:29,816 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:29,816 INFO L554 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] [2021-06-06 00:01:30,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3968 [2021-06-06 00:01:30,016 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:30,017 INFO L82 PathProgramCache]: Analyzing trace with hash 359577472, now seen corresponding path program 68 times [2021-06-06 00:01:30,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:30,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299950609] [2021-06-06 00:01:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:30,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:30,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299950609] [2021-06-06 00:01:30,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299950609] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:30,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816261482] [2021-06-06 00:01:30,038 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 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 [2021-06-06 00:01:30,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:30,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:30,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:01:30,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:30,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816261482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:30,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:30,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-06 00:01:30,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706942970] [2021-06-06 00:01:30,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:01:30,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:30,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:01:30,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:01:30,116 INFO L87 Difference]: Start difference. First operand 3028 states and 10746 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) [2021-06-06 00:01:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:30,266 INFO L93 Difference]: Finished difference Result 4339 states and 14289 transitions. [2021-06-06 00:01:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:01:30,267 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 [2021-06-06 00:01:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:30,271 INFO L225 Difference]: With dead ends: 4339 [2021-06-06 00:01:30,272 INFO L226 Difference]: Without dead ends: 4339 [2021-06-06 00:01:30,272 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:01:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-06-06 00:01:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 2863. [2021-06-06 00:01:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 3.5195667365478687) internal successors, (10073), 2862 states have internal predecessors, (10073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 10073 transitions. [2021-06-06 00:01:30,309 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 10073 transitions. Word has length 28 [2021-06-06 00:01:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:30,309 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 10073 transitions. [2021-06-06 00:01:30,309 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) [2021-06-06 00:01:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 10073 transitions. [2021-06-06 00:01:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:30,312 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:30,312 INFO L554 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] [2021-06-06 00:01:30,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3969 [2021-06-06 00:01:30,513 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash -987104094, now seen corresponding path program 69 times [2021-06-06 00:01:30,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:30,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775384799] [2021-06-06 00:01:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:30,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:30,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775384799] [2021-06-06 00:01:30,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775384799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:30,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49007129] [2021-06-06 00:01:30,545 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 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 [2021-06-06 00:01:30,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:01:30,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:30,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:30,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:30,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49007129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:30,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:30,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:01:30,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384863938] [2021-06-06 00:01:30,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:01:30,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:30,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:01:30,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:01:30,639 INFO L87 Difference]: Start difference. First operand 2863 states and 10073 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) [2021-06-06 00:01:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:31,272 INFO L93 Difference]: Finished difference Result 6209 states and 19661 transitions. [2021-06-06 00:01:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:01:31,273 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 [2021-06-06 00:01:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:31,281 INFO L225 Difference]: With dead ends: 6209 [2021-06-06 00:01:31,281 INFO L226 Difference]: Without dead ends: 6209 [2021-06-06 00:01:31,281 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 353.2ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:01:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6209 states. [2021-06-06 00:01:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6209 to 2881. [2021-06-06 00:01:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2880 states have (on average 3.5194444444444444) internal successors, (10136), 2880 states have internal predecessors, (10136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 10136 transitions. [2021-06-06 00:01:31,337 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 10136 transitions. Word has length 28 [2021-06-06 00:01:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:31,337 INFO L482 AbstractCegarLoop]: Abstraction has 2881 states and 10136 transitions. [2021-06-06 00:01:31,337 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) [2021-06-06 00:01:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 10136 transitions. [2021-06-06 00:01:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:31,340 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:31,340 INFO L554 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] [2021-06-06 00:01:31,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3970,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:31,541 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:31,541 INFO L82 PathProgramCache]: Analyzing trace with hash -202190000, now seen corresponding path program 70 times [2021-06-06 00:01:31,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:31,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542629416] [2021-06-06 00:01:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:31,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:31,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542629416] [2021-06-06 00:01:31,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542629416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:31,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002207019] [2021-06-06 00:01:31,573 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 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 [2021-06-06 00:01:31,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:31,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:31,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:31,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:31,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002207019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:31,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:31,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:01:31,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478270205] [2021-06-06 00:01:31,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:01:31,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:31,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:01:31,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:01:31,664 INFO L87 Difference]: Start difference. First operand 2881 states and 10136 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) [2021-06-06 00:01:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:32,347 INFO L93 Difference]: Finished difference Result 6471 states and 20458 transitions. [2021-06-06 00:01:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:01:32,347 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 [2021-06-06 00:01:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:32,356 INFO L225 Difference]: With dead ends: 6471 [2021-06-06 00:01:32,356 INFO L226 Difference]: Without dead ends: 6471 [2021-06-06 00:01:32,357 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 380.2ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-06 00:01:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2021-06-06 00:01:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 2975. [2021-06-06 00:01:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2974 states have (on average 3.511432414256893) internal successors, (10443), 2974 states have internal predecessors, (10443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 10443 transitions. [2021-06-06 00:01:32,412 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 10443 transitions. Word has length 28 [2021-06-06 00:01:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:32,412 INFO L482 AbstractCegarLoop]: Abstraction has 2975 states and 10443 transitions. [2021-06-06 00:01:32,412 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) [2021-06-06 00:01:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 10443 transitions. [2021-06-06 00:01:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:32,415 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:32,415 INFO L554 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] [2021-06-06 00:01:32,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3971,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:32,616 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1285212656, now seen corresponding path program 71 times [2021-06-06 00:01:32,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:32,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611979066] [2021-06-06 00:01:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:32,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:32,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611979066] [2021-06-06 00:01:32,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611979066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:32,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338169281] [2021-06-06 00:01:32,646 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 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 [2021-06-06 00:01:32,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:01:32,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:32,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:32,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:32,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338169281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:32,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:32,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:01:32,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642832652] [2021-06-06 00:01:32,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:01:32,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:32,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:01:32,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:01:32,733 INFO L87 Difference]: Start difference. First operand 2975 states and 10443 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) [2021-06-06 00:01:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:33,291 INFO L93 Difference]: Finished difference Result 6662 states and 21078 transitions. [2021-06-06 00:01:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:01:33,292 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 [2021-06-06 00:01:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:33,300 INFO L225 Difference]: With dead ends: 6662 [2021-06-06 00:01:33,300 INFO L226 Difference]: Without dead ends: 6626 [2021-06-06 00:01:33,300 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 322.1ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:01:33,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-06-06 00:01:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 3377. [2021-06-06 00:01:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3376 states have (on average 3.5390995260663507) internal successors, (11948), 3376 states have internal predecessors, (11948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 11948 transitions. [2021-06-06 00:01:33,376 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 11948 transitions. Word has length 28 [2021-06-06 00:01:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:33,376 INFO L482 AbstractCegarLoop]: Abstraction has 3377 states and 11948 transitions. [2021-06-06 00:01:33,376 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) [2021-06-06 00:01:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 11948 transitions. [2021-06-06 00:01:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:33,381 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:33,381 INFO L554 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] [2021-06-06 00:01:33,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3972,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:33,581 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:33,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:33,582 INFO L82 PathProgramCache]: Analyzing trace with hash 185865462, now seen corresponding path program 72 times [2021-06-06 00:01:33,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:33,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147344269] [2021-06-06 00:01:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:33,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:33,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147344269] [2021-06-06 00:01:33,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147344269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:33,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343744434] [2021-06-06 00:01:33,616 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 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 [2021-06-06 00:01:33,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:01:33,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:33,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:33,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:33,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343744434] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:33,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:33,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:01:33,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470446968] [2021-06-06 00:01:33,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:01:33,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:33,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:01:33,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:01:33,705 INFO L87 Difference]: Start difference. First operand 3377 states and 11948 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) [2021-06-06 00:01:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:34,261 INFO L93 Difference]: Finished difference Result 6820 states and 21509 transitions. [2021-06-06 00:01:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:01:34,262 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 [2021-06-06 00:01:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:34,271 INFO L225 Difference]: With dead ends: 6820 [2021-06-06 00:01:34,271 INFO L226 Difference]: Without dead ends: 6820 [2021-06-06 00:01:34,271 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 331.0ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:01:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6820 states. [2021-06-06 00:01:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6820 to 3088. [2021-06-06 00:01:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 3.498542274052478) internal successors, (10800), 3087 states have internal predecessors, (10800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 10800 transitions. [2021-06-06 00:01:34,352 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 10800 transitions. Word has length 28 [2021-06-06 00:01:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:34,352 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 10800 transitions. [2021-06-06 00:01:34,352 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) [2021-06-06 00:01:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 10800 transitions. [2021-06-06 00:01:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:34,356 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:34,356 INFO L554 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] [2021-06-06 00:01:34,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3973 [2021-06-06 00:01:34,556 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:34,557 INFO L82 PathProgramCache]: Analyzing trace with hash -247011142, now seen corresponding path program 73 times [2021-06-06 00:01:34,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:34,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688742310] [2021-06-06 00:01:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:34,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:34,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688742310] [2021-06-06 00:01:34,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688742310] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:34,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087187361] [2021-06-06 00:01:34,605 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 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 [2021-06-06 00:01:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:34,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:34,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:34,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087187361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:34,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:34,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:01:34,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134196040] [2021-06-06 00:01:34,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:01:34,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:34,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:01:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:01:34,699 INFO L87 Difference]: Start difference. First operand 3088 states and 10800 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) [2021-06-06 00:01:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:35,350 INFO L93 Difference]: Finished difference Result 5973 states and 19224 transitions. [2021-06-06 00:01:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:01:35,351 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 [2021-06-06 00:01:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:35,358 INFO L225 Difference]: With dead ends: 5973 [2021-06-06 00:01:35,358 INFO L226 Difference]: Without dead ends: 5969 [2021-06-06 00:01:35,359 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 393.1ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:01:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2021-06-06 00:01:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 2848. [2021-06-06 00:01:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2847 states have (on average 3.523709167544784) internal successors, (10032), 2847 states have internal predecessors, (10032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 10032 transitions. [2021-06-06 00:01:35,407 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 10032 transitions. Word has length 28 [2021-06-06 00:01:35,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:35,407 INFO L482 AbstractCegarLoop]: Abstraction has 2848 states and 10032 transitions. [2021-06-06 00:01:35,407 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) [2021-06-06 00:01:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 10032 transitions. [2021-06-06 00:01:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:35,410 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:35,410 INFO L554 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] [2021-06-06 00:01:35,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3974,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:35,611 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:35,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:35,611 INFO L82 PathProgramCache]: Analyzing trace with hash -519020332, now seen corresponding path program 74 times [2021-06-06 00:01:35,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:35,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228814561] [2021-06-06 00:01:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:35,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:35,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228814561] [2021-06-06 00:01:35,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228814561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:35,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232049372] [2021-06-06 00:01:35,642 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 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 [2021-06-06 00:01:35,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:35,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:35,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:35,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:35,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232049372] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:35,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:35,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:01:35,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602953836] [2021-06-06 00:01:35,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:35,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:35,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:35,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:35,753 INFO L87 Difference]: Start difference. First operand 2848 states and 10032 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) [2021-06-06 00:01:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:36,683 INFO L93 Difference]: Finished difference Result 9218 states and 30019 transitions. [2021-06-06 00:01:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:01:36,684 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 [2021-06-06 00:01:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:36,696 INFO L225 Difference]: With dead ends: 9218 [2021-06-06 00:01:36,696 INFO L226 Difference]: Without dead ends: 9218 [2021-06-06 00:01:36,697 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 544.8ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:01:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2021-06-06 00:01:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 3024. [2021-06-06 00:01:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 3023 states have (on average 3.595765795567317) internal successors, (10870), 3023 states have internal predecessors, (10870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 10870 transitions. [2021-06-06 00:01:36,772 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 10870 transitions. Word has length 28 [2021-06-06 00:01:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:36,772 INFO L482 AbstractCegarLoop]: Abstraction has 3024 states and 10870 transitions. [2021-06-06 00:01:36,772 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) [2021-06-06 00:01:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 10870 transitions. [2021-06-06 00:01:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:36,776 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:36,776 INFO L554 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] [2021-06-06 00:01:36,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3975,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:36,976 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:36,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:36,976 INFO L82 PathProgramCache]: Analyzing trace with hash 47931748, now seen corresponding path program 75 times [2021-06-06 00:01:36,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:36,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058522319] [2021-06-06 00:01:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:37,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:37,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058522319] [2021-06-06 00:01:37,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058522319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:37,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224706205] [2021-06-06 00:01:37,007 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 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 [2021-06-06 00:01:37,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:01:37,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:37,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:37,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224706205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:37,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:37,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:01:37,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385347431] [2021-06-06 00:01:37,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:37,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:37,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:37,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:37,116 INFO L87 Difference]: Start difference. First operand 3024 states and 10870 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) [2021-06-06 00:01:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:38,053 INFO L93 Difference]: Finished difference Result 9047 states and 29554 transitions. [2021-06-06 00:01:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:01:38,053 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 [2021-06-06 00:01:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:38,065 INFO L225 Difference]: With dead ends: 9047 [2021-06-06 00:01:38,065 INFO L226 Difference]: Without dead ends: 9047 [2021-06-06 00:01:38,066 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 557.1ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:01:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9047 states. [2021-06-06 00:01:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9047 to 2996. [2021-06-06 00:01:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2995 states have (on average 3.579632721202003) internal successors, (10721), 2995 states have internal predecessors, (10721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 10721 transitions. [2021-06-06 00:01:38,141 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 10721 transitions. Word has length 28 [2021-06-06 00:01:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:38,141 INFO L482 AbstractCegarLoop]: Abstraction has 2996 states and 10721 transitions. [2021-06-06 00:01:38,141 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) [2021-06-06 00:01:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 10721 transitions. [2021-06-06 00:01:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:38,144 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:38,144 INFO L554 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] [2021-06-06 00:01:38,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3976,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:38,344 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:38,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:38,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1124414110, now seen corresponding path program 76 times [2021-06-06 00:01:38,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:38,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428299244] [2021-06-06 00:01:38,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:38,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:38,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428299244] [2021-06-06 00:01:38,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428299244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:38,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371529526] [2021-06-06 00:01:38,375 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 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 [2021-06-06 00:01:38,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:38,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:38,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:38,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:38,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371529526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:38,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:38,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:01:38,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481201766] [2021-06-06 00:01:38,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:38,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:38,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:38,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:38,474 INFO L87 Difference]: Start difference. First operand 2996 states and 10721 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) [2021-06-06 00:01:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:39,331 INFO L93 Difference]: Finished difference Result 8494 states and 26829 transitions. [2021-06-06 00:01:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:01:39,331 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 [2021-06-06 00:01:39,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:39,342 INFO L225 Difference]: With dead ends: 8494 [2021-06-06 00:01:39,342 INFO L226 Difference]: Without dead ends: 8494 [2021-06-06 00:01:39,342 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 468.1ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:01:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8494 states. [2021-06-06 00:01:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8494 to 3016. [2021-06-06 00:01:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 3015 states have (on average 3.5830845771144277) internal successors, (10803), 3015 states have internal predecessors, (10803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 10803 transitions. [2021-06-06 00:01:39,408 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 10803 transitions. Word has length 28 [2021-06-06 00:01:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:39,408 INFO L482 AbstractCegarLoop]: Abstraction has 3016 states and 10803 transitions. [2021-06-06 00:01:39,409 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) [2021-06-06 00:01:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 10803 transitions. [2021-06-06 00:01:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:39,412 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:39,412 INFO L554 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] [2021-06-06 00:01:39,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3977 [2021-06-06 00:01:39,612 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:39,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1043038022, now seen corresponding path program 77 times [2021-06-06 00:01:39,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:39,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154004279] [2021-06-06 00:01:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:39,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:39,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154004279] [2021-06-06 00:01:39,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154004279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:39,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29601593] [2021-06-06 00:01:39,646 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 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 [2021-06-06 00:01:39,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:01:39,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:39,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:39,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:39,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29601593] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:39,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:39,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:01:39,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996641442] [2021-06-06 00:01:39,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:39,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:39,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:39,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:39,741 INFO L87 Difference]: Start difference. First operand 3016 states and 10803 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) [2021-06-06 00:01:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:40,558 INFO L93 Difference]: Finished difference Result 8003 states and 25641 transitions. [2021-06-06 00:01:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:01:40,558 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 [2021-06-06 00:01:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:40,570 INFO L225 Difference]: With dead ends: 8003 [2021-06-06 00:01:40,570 INFO L226 Difference]: Without dead ends: 7995 [2021-06-06 00:01:40,571 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 440.1ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:01:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7995 states. [2021-06-06 00:01:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7995 to 2998. [2021-06-06 00:01:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2997 states have (on average 3.578912245578912) internal successors, (10726), 2997 states have internal predecessors, (10726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 10726 transitions. [2021-06-06 00:01:40,653 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 10726 transitions. Word has length 28 [2021-06-06 00:01:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:40,653 INFO L482 AbstractCegarLoop]: Abstraction has 2998 states and 10726 transitions. [2021-06-06 00:01:40,653 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) [2021-06-06 00:01:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 10726 transitions. [2021-06-06 00:01:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:40,656 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:40,656 INFO L554 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] [2021-06-06 00:01:40,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3978 [2021-06-06 00:01:40,866 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:40,867 INFO L82 PathProgramCache]: Analyzing trace with hash -112380806, now seen corresponding path program 78 times [2021-06-06 00:01:40,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:40,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225768620] [2021-06-06 00:01:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:40,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:40,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225768620] [2021-06-06 00:01:40,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225768620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:40,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535345762] [2021-06-06 00:01:40,899 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 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 [2021-06-06 00:01:40,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:01:40,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:40,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:40,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:41,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535345762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:41,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:41,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:01:41,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380028266] [2021-06-06 00:01:41,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:41,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:41,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:41,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:41,010 INFO L87 Difference]: Start difference. First operand 2998 states and 10726 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) [2021-06-06 00:01:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:41,875 INFO L93 Difference]: Finished difference Result 7921 states and 25395 transitions. [2021-06-06 00:01:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-06 00:01:41,875 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 [2021-06-06 00:01:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:41,886 INFO L225 Difference]: With dead ends: 7921 [2021-06-06 00:01:41,886 INFO L226 Difference]: Without dead ends: 7921 [2021-06-06 00:01:41,886 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 478.9ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:01:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2021-06-06 00:01:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 3014. [2021-06-06 00:01:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3013 states have (on average 3.5811483571191505) internal successors, (10790), 3013 states have internal predecessors, (10790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 10790 transitions. [2021-06-06 00:01:41,970 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 10790 transitions. Word has length 28 [2021-06-06 00:01:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:41,971 INFO L482 AbstractCegarLoop]: Abstraction has 3014 states and 10790 transitions. [2021-06-06 00:01:41,971 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) [2021-06-06 00:01:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 10790 transitions. [2021-06-06 00:01:41,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:41,974 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:41,974 INFO L554 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] [2021-06-06 00:01:42,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3979,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:42,177 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1530658348, now seen corresponding path program 79 times [2021-06-06 00:01:42,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:42,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469359981] [2021-06-06 00:01:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:42,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:42,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469359981] [2021-06-06 00:01:42,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469359981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:42,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430396028] [2021-06-06 00:01:42,208 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 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 [2021-06-06 00:01:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:42,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:42,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:42,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430396028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:42,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:42,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:01:42,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003327156] [2021-06-06 00:01:42,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:42,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:42,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:42,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:42,310 INFO L87 Difference]: Start difference. First operand 3014 states and 10790 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) [2021-06-06 00:01:43,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:43,166 INFO L93 Difference]: Finished difference Result 7589 states and 24611 transitions. [2021-06-06 00:01:43,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:01:43,167 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 [2021-06-06 00:01:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:43,177 INFO L225 Difference]: With dead ends: 7589 [2021-06-06 00:01:43,178 INFO L226 Difference]: Without dead ends: 7581 [2021-06-06 00:01:43,178 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 472.5ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:01:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2021-06-06 00:01:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 2771. [2021-06-06 00:01:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2770 states have (on average 3.4974729241877256) internal successors, (9688), 2770 states have internal predecessors, (9688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 9688 transitions. [2021-06-06 00:01:43,240 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 9688 transitions. Word has length 28 [2021-06-06 00:01:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:43,240 INFO L482 AbstractCegarLoop]: Abstraction has 2771 states and 9688 transitions. [2021-06-06 00:01:43,240 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) [2021-06-06 00:01:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 9688 transitions. [2021-06-06 00:01:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:43,243 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:43,243 INFO L554 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] [2021-06-06 00:01:43,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3980 [2021-06-06 00:01:43,444 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:43,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1614061928, now seen corresponding path program 80 times [2021-06-06 00:01:43,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:43,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962488007] [2021-06-06 00:01:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:43,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:43,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962488007] [2021-06-06 00:01:43,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962488007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:43,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828953194] [2021-06-06 00:01:43,476 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 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 [2021-06-06 00:01:43,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:43,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:43,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:43,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:43,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828953194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:43,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:43,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:01:43,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007674306] [2021-06-06 00:01:43,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:01:43,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:43,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:01:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:01:43,588 INFO L87 Difference]: Start difference. First operand 2771 states and 9688 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) [2021-06-06 00:01:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:44,372 INFO L93 Difference]: Finished difference Result 5790 states and 18502 transitions. [2021-06-06 00:01:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:01:44,372 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 [2021-06-06 00:01:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:44,380 INFO L225 Difference]: With dead ends: 5790 [2021-06-06 00:01:44,380 INFO L226 Difference]: Without dead ends: 5790 [2021-06-06 00:01:44,381 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 474.7ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:01:44,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2021-06-06 00:01:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 2783. [2021-06-06 00:01:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2782 states have (on average 3.4960460100647017) internal successors, (9726), 2782 states have internal predecessors, (9726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 9726 transitions. [2021-06-06 00:01:44,430 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 9726 transitions. Word has length 28 [2021-06-06 00:01:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:44,430 INFO L482 AbstractCegarLoop]: Abstraction has 2783 states and 9726 transitions. [2021-06-06 00:01:44,430 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) [2021-06-06 00:01:44,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 9726 transitions. [2021-06-06 00:01:44,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:44,433 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:44,433 INFO L554 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] [2021-06-06 00:01:44,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3981,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:44,633 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:44,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:44,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1027545192, now seen corresponding path program 81 times [2021-06-06 00:01:44,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:44,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258792750] [2021-06-06 00:01:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:44,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:44,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258792750] [2021-06-06 00:01:44,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258792750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:44,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661546528] [2021-06-06 00:01:44,669 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 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 [2021-06-06 00:01:44,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:01:44,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:44,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:44,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:44,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661546528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:44,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:44,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:01:44,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697693343] [2021-06-06 00:01:44,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:01:44,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:44,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:01:44,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:01:44,791 INFO L87 Difference]: Start difference. First operand 2783 states and 9726 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) [2021-06-06 00:01:45,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:45,804 INFO L93 Difference]: Finished difference Result 6569 states and 20497 transitions. [2021-06-06 00:01:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:01:45,804 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 [2021-06-06 00:01:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:45,812 INFO L225 Difference]: With dead ends: 6569 [2021-06-06 00:01:45,813 INFO L226 Difference]: Without dead ends: 6569 [2021-06-06 00:01:45,813 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 617.4ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:01:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6569 states. [2021-06-06 00:01:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 2849. [2021-06-06 00:01:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2848 states have (on average 3.4912219101123596) internal successors, (9943), 2848 states have internal predecessors, (9943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 9943 transitions. [2021-06-06 00:01:45,868 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 9943 transitions. Word has length 28 [2021-06-06 00:01:45,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:45,868 INFO L482 AbstractCegarLoop]: Abstraction has 2849 states and 9943 transitions. [2021-06-06 00:01:45,868 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) [2021-06-06 00:01:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 9943 transitions. [2021-06-06 00:01:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:45,871 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:45,871 INFO L554 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] [2021-06-06 00:01:46,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3982,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:46,072 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 615493962, now seen corresponding path program 82 times [2021-06-06 00:01:46,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:46,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204878269] [2021-06-06 00:01:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:46,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:46,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204878269] [2021-06-06 00:01:46,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204878269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:46,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161866754] [2021-06-06 00:01:46,104 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 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 [2021-06-06 00:01:46,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:46,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:46,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:46,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161866754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:46,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:46,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:01:46,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785068498] [2021-06-06 00:01:46,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:01:46,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:46,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:01:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:01:46,219 INFO L87 Difference]: Start difference. First operand 2849 states and 9943 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) [2021-06-06 00:01:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:47,188 INFO L93 Difference]: Finished difference Result 6132 states and 19351 transitions. [2021-06-06 00:01:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:01:47,189 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 [2021-06-06 00:01:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:47,198 INFO L225 Difference]: With dead ends: 6132 [2021-06-06 00:01:47,198 INFO L226 Difference]: Without dead ends: 6128 [2021-06-06 00:01:47,198 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 576.2ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:01:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2021-06-06 00:01:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 2775. [2021-06-06 00:01:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2774 states have (on average 3.4870223503965394) internal successors, (9673), 2774 states have internal predecessors, (9673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 9673 transitions. [2021-06-06 00:01:47,266 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 9673 transitions. Word has length 28 [2021-06-06 00:01:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:47,266 INFO L482 AbstractCegarLoop]: Abstraction has 2775 states and 9673 transitions. [2021-06-06 00:01:47,266 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) [2021-06-06 00:01:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 9673 transitions. [2021-06-06 00:01:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:47,269 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:47,269 INFO L554 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] [2021-06-06 00:01:47,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3983,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:47,469 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:47,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:47,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1194937186, now seen corresponding path program 66 times [2021-06-06 00:01:47,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:47,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248613651] [2021-06-06 00:01:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:47,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:47,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248613651] [2021-06-06 00:01:47,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248613651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:47,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721462805] [2021-06-06 00:01:47,508 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 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 [2021-06-06 00:01:47,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:01:47,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:47,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:47,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:47,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721462805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:47,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:47,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:01:47,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287654740] [2021-06-06 00:01:47,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:47,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:47,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:47,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:47,603 INFO L87 Difference]: Start difference. First operand 2775 states and 9673 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) [2021-06-06 00:01:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:48,123 INFO L93 Difference]: Finished difference Result 5268 states and 16907 transitions. [2021-06-06 00:01:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:01:48,123 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 [2021-06-06 00:01:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:48,131 INFO L225 Difference]: With dead ends: 5268 [2021-06-06 00:01:48,131 INFO L226 Difference]: Without dead ends: 5268 [2021-06-06 00:01:48,132 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 303.3ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:01:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2021-06-06 00:01:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 2775. [2021-06-06 00:01:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2774 states have (on average 3.4891852919971162) internal successors, (9679), 2774 states have internal predecessors, (9679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 9679 transitions. [2021-06-06 00:01:48,176 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 9679 transitions. Word has length 28 [2021-06-06 00:01:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:48,176 INFO L482 AbstractCegarLoop]: Abstraction has 2775 states and 9679 transitions. [2021-06-06 00:01:48,176 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) [2021-06-06 00:01:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 9679 transitions. [2021-06-06 00:01:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:48,179 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:48,179 INFO L554 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] [2021-06-06 00:01:48,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3984,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:48,384 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash -416862576, now seen corresponding path program 67 times [2021-06-06 00:01:48,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:48,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782521506] [2021-06-06 00:01:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:48,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:48,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782521506] [2021-06-06 00:01:48,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782521506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:48,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461777250] [2021-06-06 00:01:48,421 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 [2021-06-06 00:01:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:48,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:48,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:48,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461777250] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:48,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:48,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:01:48,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461677502] [2021-06-06 00:01:48,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:48,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:48,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:48,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:48,515 INFO L87 Difference]: Start difference. First operand 2775 states and 9679 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) [2021-06-06 00:01:49,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:49,217 INFO L93 Difference]: Finished difference Result 5584 states and 17812 transitions. [2021-06-06 00:01:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:01:49,218 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 [2021-06-06 00:01:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:49,225 INFO L225 Difference]: With dead ends: 5584 [2021-06-06 00:01:49,225 INFO L226 Difference]: Without dead ends: 5584 [2021-06-06 00:01:49,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 404.4ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:01:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2021-06-06 00:01:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 2766. [2021-06-06 00:01:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2765 states have (on average 3.489330922242315) internal successors, (9648), 2765 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 9648 transitions. [2021-06-06 00:01:49,271 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 9648 transitions. Word has length 28 [2021-06-06 00:01:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:49,271 INFO L482 AbstractCegarLoop]: Abstraction has 2766 states and 9648 transitions. [2021-06-06 00:01:49,271 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) [2021-06-06 00:01:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 9648 transitions. [2021-06-06 00:01:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:49,274 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:49,274 INFO L554 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] [2021-06-06 00:01:49,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3985 [2021-06-06 00:01:49,474 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:49,474 INFO L82 PathProgramCache]: Analyzing trace with hash -648402224, now seen corresponding path program 68 times [2021-06-06 00:01:49,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:49,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567594397] [2021-06-06 00:01:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:49,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:49,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567594397] [2021-06-06 00:01:49,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567594397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:49,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394557899] [2021-06-06 00:01:49,511 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 [2021-06-06 00:01:49,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:49,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:49,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:49,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:49,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394557899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:49,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:49,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:01:49,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850087668] [2021-06-06 00:01:49,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:49,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:49,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:49,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:49,605 INFO L87 Difference]: Start difference. First operand 2766 states and 9648 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) [2021-06-06 00:01:50,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:50,339 INFO L93 Difference]: Finished difference Result 6079 states and 19142 transitions. [2021-06-06 00:01:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:01:50,339 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 [2021-06-06 00:01:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:50,347 INFO L225 Difference]: With dead ends: 6079 [2021-06-06 00:01:50,347 INFO L226 Difference]: Without dead ends: 6079 [2021-06-06 00:01:50,348 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 449.2ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:01:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6079 states. [2021-06-06 00:01:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 2826. [2021-06-06 00:01:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2825 states have (on average 3.485309734513274) internal successors, (9846), 2825 states have internal predecessors, (9846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 9846 transitions. [2021-06-06 00:01:50,399 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 9846 transitions. Word has length 28 [2021-06-06 00:01:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:50,399 INFO L482 AbstractCegarLoop]: Abstraction has 2826 states and 9846 transitions. [2021-06-06 00:01:50,399 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) [2021-06-06 00:01:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 9846 transitions. [2021-06-06 00:01:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:50,402 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:50,402 INFO L554 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] [2021-06-06 00:01:50,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3986,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:50,602 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:50,602 INFO L82 PathProgramCache]: Analyzing trace with hash -628686410, now seen corresponding path program 69 times [2021-06-06 00:01:50,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:50,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48430360] [2021-06-06 00:01:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:50,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:50,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48430360] [2021-06-06 00:01:50,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48430360] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:50,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133933436] [2021-06-06 00:01:50,633 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 [2021-06-06 00:01:50,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:01:50,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:50,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:50,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:50,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133933436] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:50,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:50,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-06 00:01:50,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181335973] [2021-06-06 00:01:50,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:01:50,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:50,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:01:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:01:50,764 INFO L87 Difference]: Start difference. First operand 2826 states and 9846 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) [2021-06-06 00:01:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:51,261 INFO L93 Difference]: Finished difference Result 6807 states and 22904 transitions. [2021-06-06 00:01:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:01:51,261 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 [2021-06-06 00:01:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:51,270 INFO L225 Difference]: With dead ends: 6807 [2021-06-06 00:01:51,270 INFO L226 Difference]: Without dead ends: 6807 [2021-06-06 00:01:51,270 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 328.3ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:01:51,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2021-06-06 00:01:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 4024. [2021-06-06 00:01:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4023 states have (on average 3.6109868257519264) internal successors, (14527), 4023 states have internal predecessors, (14527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 14527 transitions. [2021-06-06 00:01:51,336 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 14527 transitions. Word has length 28 [2021-06-06 00:01:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:51,336 INFO L482 AbstractCegarLoop]: Abstraction has 4024 states and 14527 transitions. [2021-06-06 00:01:51,336 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) [2021-06-06 00:01:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 14527 transitions. [2021-06-06 00:01:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:51,340 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:51,340 INFO L554 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] [2021-06-06 00:01:51,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3987 [2021-06-06 00:01:51,541 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:51,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:51,541 INFO L82 PathProgramCache]: Analyzing trace with hash -693223366, now seen corresponding path program 70 times [2021-06-06 00:01:51,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:51,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279364872] [2021-06-06 00:01:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:51,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:51,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279364872] [2021-06-06 00:01:51,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279364872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:51,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678295194] [2021-06-06 00:01:51,577 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 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 [2021-06-06 00:01:51,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:51,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:51,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:51,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:51,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678295194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:51,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:51,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:01:51,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105993632] [2021-06-06 00:01:51,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:51,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:51,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:51,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:51,665 INFO L87 Difference]: Start difference. First operand 4024 states and 14527 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) [2021-06-06 00:01:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:52,376 INFO L93 Difference]: Finished difference Result 7353 states and 24861 transitions. [2021-06-06 00:01:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:01:52,376 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 [2021-06-06 00:01:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:52,404 INFO L225 Difference]: With dead ends: 7353 [2021-06-06 00:01:52,404 INFO L226 Difference]: Without dead ends: 7349 [2021-06-06 00:01:52,404 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 405.0ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:01:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7349 states. [2021-06-06 00:01:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7349 to 3916. [2021-06-06 00:01:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3916 states, 3915 states have (on average 3.6206896551724137) internal successors, (14175), 3915 states have internal predecessors, (14175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 14175 transitions. [2021-06-06 00:01:52,470 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 14175 transitions. Word has length 28 [2021-06-06 00:01:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:52,470 INFO L482 AbstractCegarLoop]: Abstraction has 3916 states and 14175 transitions. [2021-06-06 00:01:52,470 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) [2021-06-06 00:01:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 14175 transitions. [2021-06-06 00:01:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:52,474 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:52,474 INFO L554 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] [2021-06-06 00:01:52,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3988,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:52,675 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1327034102, now seen corresponding path program 83 times [2021-06-06 00:01:52,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:52,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262223622] [2021-06-06 00:01:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:52,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:52,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262223622] [2021-06-06 00:01:52,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262223622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:52,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12132261] [2021-06-06 00:01:52,700 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 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 [2021-06-06 00:01:52,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:01:52,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:52,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:52,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:52,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12132261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:52,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:52,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:01:52,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240346043] [2021-06-06 00:01:52,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:52,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:52,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:52,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:52,799 INFO L87 Difference]: Start difference. First operand 3916 states and 14175 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) [2021-06-06 00:01:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:53,503 INFO L93 Difference]: Finished difference Result 8141 states and 27286 transitions. [2021-06-06 00:01:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:01:53,504 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 [2021-06-06 00:01:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:53,514 INFO L225 Difference]: With dead ends: 8141 [2021-06-06 00:01:53,514 INFO L226 Difference]: Without dead ends: 8132 [2021-06-06 00:01:53,515 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 418.0ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:01:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2021-06-06 00:01:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 4360. [2021-06-06 00:01:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 4359 states have (on average 3.7118605184675384) internal successors, (16180), 4359 states have internal predecessors, (16180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 16180 transitions. [2021-06-06 00:01:53,592 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 16180 transitions. Word has length 28 [2021-06-06 00:01:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:53,592 INFO L482 AbstractCegarLoop]: Abstraction has 4360 states and 16180 transitions. [2021-06-06 00:01:53,592 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) [2021-06-06 00:01:53,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 16180 transitions. [2021-06-06 00:01:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:53,597 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:53,597 INFO L554 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] [2021-06-06 00:01:53,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3989,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:53,798 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:53,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:53,798 INFO L82 PathProgramCache]: Analyzing trace with hash -926591794, now seen corresponding path program 84 times [2021-06-06 00:01:53,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:53,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299339688] [2021-06-06 00:01:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:53,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:53,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299339688] [2021-06-06 00:01:53,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299339688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:53,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214619708] [2021-06-06 00:01:53,823 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 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 [2021-06-06 00:01:53,846 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:01:53,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:53,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:53,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:53,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214619708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:53,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:53,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:01:53,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742745252] [2021-06-06 00:01:53,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:01:53,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:53,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:01:53,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:01:53,921 INFO L87 Difference]: Start difference. First operand 4360 states and 16180 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) [2021-06-06 00:01:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:54,664 INFO L93 Difference]: Finished difference Result 8418 states and 28143 transitions. [2021-06-06 00:01:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:01:54,664 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 [2021-06-06 00:01:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:54,675 INFO L225 Difference]: With dead ends: 8418 [2021-06-06 00:01:54,675 INFO L226 Difference]: Without dead ends: 8418 [2021-06-06 00:01:54,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 433.4ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:01:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2021-06-06 00:01:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 4380. [2021-06-06 00:01:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.69901804064855) internal successors, (16198), 4379 states have internal predecessors, (16198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 16198 transitions. [2021-06-06 00:01:54,755 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 16198 transitions. Word has length 28 [2021-06-06 00:01:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:54,755 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 16198 transitions. [2021-06-06 00:01:54,755 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) [2021-06-06 00:01:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 16198 transitions. [2021-06-06 00:01:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:54,760 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:54,760 INFO L554 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] [2021-06-06 00:01:54,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3990 [2021-06-06 00:01:54,961 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:54,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2129998084, now seen corresponding path program 85 times [2021-06-06 00:01:54,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:54,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974623217] [2021-06-06 00:01:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:54,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:54,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974623217] [2021-06-06 00:01:54,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974623217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:54,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323710292] [2021-06-06 00:01:54,990 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 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 [2021-06-06 00:01:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:55,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:55,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:55,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323710292] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:55,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:55,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:01:55,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522603340] [2021-06-06 00:01:55,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:01:55,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:55,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:01:55,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:01:55,067 INFO L87 Difference]: Start difference. First operand 4380 states and 16198 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) [2021-06-06 00:01:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:55,460 INFO L93 Difference]: Finished difference Result 7845 states and 27662 transitions. [2021-06-06 00:01:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:01:55,460 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 [2021-06-06 00:01:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:55,472 INFO L225 Difference]: With dead ends: 7845 [2021-06-06 00:01:55,472 INFO L226 Difference]: Without dead ends: 7762 [2021-06-06 00:01:55,472 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 204.3ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:01:55,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-06-06 00:01:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 5838. [2021-06-06 00:01:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5838 states, 5837 states have (on average 3.7627205756381703) internal successors, (21963), 5837 states have internal predecessors, (21963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 21963 transitions. [2021-06-06 00:01:55,583 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 21963 transitions. Word has length 28 [2021-06-06 00:01:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:55,583 INFO L482 AbstractCegarLoop]: Abstraction has 5838 states and 21963 transitions. [2021-06-06 00:01:55,583 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) [2021-06-06 00:01:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 21963 transitions. [2021-06-06 00:01:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:55,590 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:55,590 INFO L554 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] [2021-06-06 00:01:55,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3991 [2021-06-06 00:01:55,790 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:55,790 INFO L82 PathProgramCache]: Analyzing trace with hash -921983104, now seen corresponding path program 86 times [2021-06-06 00:01:55,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:55,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079971744] [2021-06-06 00:01:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:55,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:55,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079971744] [2021-06-06 00:01:55,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079971744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:55,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811451859] [2021-06-06 00:01:55,815 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 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 [2021-06-06 00:01:55,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:01:55,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:55,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:01:55,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:55,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811451859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:55,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:55,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:01:55,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552506336] [2021-06-06 00:01:55,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:01:55,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:55,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:01:55,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:01:55,885 INFO L87 Difference]: Start difference. First operand 5838 states and 21963 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) [2021-06-06 00:01:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:56,043 INFO L93 Difference]: Finished difference Result 8103 states and 28515 transitions. [2021-06-06 00:01:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:01:56,043 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 [2021-06-06 00:01:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:56,054 INFO L225 Difference]: With dead ends: 8103 [2021-06-06 00:01:56,054 INFO L226 Difference]: Without dead ends: 8103 [2021-06-06 00:01:56,055 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:01:56,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2021-06-06 00:01:56,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 5980. [2021-06-06 00:01:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 5979 states have (on average 3.7395885599598597) internal successors, (22359), 5979 states have internal predecessors, (22359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 22359 transitions. [2021-06-06 00:01:56,145 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 22359 transitions. Word has length 28 [2021-06-06 00:01:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:56,145 INFO L482 AbstractCegarLoop]: Abstraction has 5980 states and 22359 transitions. [2021-06-06 00:01:56,145 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) [2021-06-06 00:01:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 22359 transitions. [2021-06-06 00:01:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:56,152 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:56,152 INFO L554 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] [2021-06-06 00:01:56,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3992,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:56,352 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash 8216640, now seen corresponding path program 87 times [2021-06-06 00:01:56,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:56,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161807238] [2021-06-06 00:01:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:56,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:56,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161807238] [2021-06-06 00:01:56,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161807238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:56,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869313833] [2021-06-06 00:01:56,388 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 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 [2021-06-06 00:01:56,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:01:56,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:56,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:56,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:56,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869313833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:56,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:56,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:01:56,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129431838] [2021-06-06 00:01:56,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:01:56,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:56,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:01:56,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:01:56,471 INFO L87 Difference]: Start difference. First operand 5980 states and 22359 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) [2021-06-06 00:01:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:57,105 INFO L93 Difference]: Finished difference Result 12480 states and 43435 transitions. [2021-06-06 00:01:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:01:57,106 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 [2021-06-06 00:01:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:57,125 INFO L225 Difference]: With dead ends: 12480 [2021-06-06 00:01:57,125 INFO L226 Difference]: Without dead ends: 12480 [2021-06-06 00:01:57,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 374.4ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:01:57,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2021-06-06 00:01:57,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 6653. [2021-06-06 00:01:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6653 states, 6652 states have (on average 3.753607937462417) internal successors, (24969), 6652 states have internal predecessors, (24969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6653 states to 6653 states and 24969 transitions. [2021-06-06 00:01:57,278 INFO L78 Accepts]: Start accepts. Automaton has 6653 states and 24969 transitions. Word has length 28 [2021-06-06 00:01:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:57,278 INFO L482 AbstractCegarLoop]: Abstraction has 6653 states and 24969 transitions. [2021-06-06 00:01:57,278 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) [2021-06-06 00:01:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6653 states and 24969 transitions. [2021-06-06 00:01:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:57,286 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:57,286 INFO L554 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] [2021-06-06 00:01:57,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3993,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:57,487 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:57,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1910896092, now seen corresponding path program 88 times [2021-06-06 00:01:57,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:57,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368706373] [2021-06-06 00:01:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:57,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:57,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368706373] [2021-06-06 00:01:57,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368706373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:57,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318727729] [2021-06-06 00:01:57,518 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 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 [2021-06-06 00:01:57,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:01:57,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:57,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:01:57,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:57,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318727729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:57,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:57,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:01:57,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599517484] [2021-06-06 00:01:57,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:01:57,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:57,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:01:57,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:01:57,598 INFO L87 Difference]: Start difference. First operand 6653 states and 24969 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) [2021-06-06 00:01:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:58,167 INFO L93 Difference]: Finished difference Result 12633 states and 43998 transitions. [2021-06-06 00:01:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:01:58,168 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 [2021-06-06 00:01:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:58,188 INFO L225 Difference]: With dead ends: 12633 [2021-06-06 00:01:58,188 INFO L226 Difference]: Without dead ends: 12633 [2021-06-06 00:01:58,189 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 325.1ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:01:58,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12633 states. [2021-06-06 00:01:58,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12633 to 6881. [2021-06-06 00:01:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6881 states, 6880 states have (on average 3.734156976744186) internal successors, (25691), 6880 states have internal predecessors, (25691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 25691 transitions. [2021-06-06 00:01:58,396 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 25691 transitions. Word has length 28 [2021-06-06 00:01:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:58,396 INFO L482 AbstractCegarLoop]: Abstraction has 6881 states and 25691 transitions. [2021-06-06 00:01:58,396 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) [2021-06-06 00:01:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 25691 transitions. [2021-06-06 00:01:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:58,406 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:58,406 INFO L554 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] [2021-06-06 00:01:58,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3994 [2021-06-06 00:01:58,606 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:58,606 INFO L82 PathProgramCache]: Analyzing trace with hash 827873436, now seen corresponding path program 89 times [2021-06-06 00:01:58,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:58,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61771586] [2021-06-06 00:01:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:58,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:58,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61771586] [2021-06-06 00:01:58,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61771586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:58,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96900833] [2021-06-06 00:01:58,634 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 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 [2021-06-06 00:01:58,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:01:58,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:58,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:01:58,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96900833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:58,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:58,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:01:58,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790495075] [2021-06-06 00:01:58,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:01:58,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:58,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:01:58,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:01:58,717 INFO L87 Difference]: Start difference. First operand 6881 states and 25691 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) [2021-06-06 00:01:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:59,073 INFO L93 Difference]: Finished difference Result 9357 states and 33618 transitions. [2021-06-06 00:01:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:01:59,074 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 [2021-06-06 00:01:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:59,089 INFO L225 Difference]: With dead ends: 9357 [2021-06-06 00:01:59,089 INFO L226 Difference]: Without dead ends: 9327 [2021-06-06 00:01:59,090 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 173.8ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:01:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9327 states. [2021-06-06 00:01:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9327 to 7728. [2021-06-06 00:01:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7728 states, 7727 states have (on average 3.760450368836547) internal successors, (29057), 7727 states have internal predecessors, (29057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:01:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 29057 transitions. [2021-06-06 00:01:59,214 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 29057 transitions. Word has length 28 [2021-06-06 00:01:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:01:59,214 INFO L482 AbstractCegarLoop]: Abstraction has 7728 states and 29057 transitions. [2021-06-06 00:01:59,214 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) [2021-06-06 00:01:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 29057 transitions. [2021-06-06 00:01:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:01:59,224 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:01:59,224 INFO L554 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] [2021-06-06 00:01:59,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3995,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:01:59,424 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:01:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:01:59,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1996015742, now seen corresponding path program 90 times [2021-06-06 00:01:59,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:01:59,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158875278] [2021-06-06 00:01:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:01:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:01:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:59,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:01:59,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158875278] [2021-06-06 00:01:59,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158875278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:59,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242653689] [2021-06-06 00:01:59,449 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 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 [2021-06-06 00:01:59,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:01:59,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:01:59,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:01:59,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:01:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:01:59,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242653689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:01:59,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:01:59,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:01:59,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633647994] [2021-06-06 00:01:59,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:01:59,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:01:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:01:59,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:01:59,527 INFO L87 Difference]: Start difference. First operand 7728 states and 29057 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) [2021-06-06 00:01:59,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:01:59,838 INFO L93 Difference]: Finished difference Result 9961 states and 35609 transitions. [2021-06-06 00:01:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:01:59,838 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 [2021-06-06 00:01:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:01:59,853 INFO L225 Difference]: With dead ends: 9961 [2021-06-06 00:01:59,853 INFO L226 Difference]: Without dead ends: 9961 [2021-06-06 00:01:59,853 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:01:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9961 states. [2021-06-06 00:01:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9961 to 7768. [2021-06-06 00:01:59,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7768 states, 7767 states have (on average 3.756405304493369) internal successors, (29176), 7767 states have internal predecessors, (29176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 29176 transitions. [2021-06-06 00:02:00,028 INFO L78 Accepts]: Start accepts. Automaton has 7768 states and 29176 transitions. Word has length 28 [2021-06-06 00:02:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:00,028 INFO L482 AbstractCegarLoop]: Abstraction has 7768 states and 29176 transitions. [2021-06-06 00:02:00,028 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) [2021-06-06 00:02:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7768 states and 29176 transitions. [2021-06-06 00:02:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:00,038 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:00,038 INFO L554 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] [2021-06-06 00:02:00,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3996,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:00,239 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1866074950, now seen corresponding path program 91 times [2021-06-06 00:02:00,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:00,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796325201] [2021-06-06 00:02:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:00,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:00,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796325201] [2021-06-06 00:02:00,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796325201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:00,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508663806] [2021-06-06 00:02:00,271 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 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 [2021-06-06 00:02:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:00,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:00,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:00,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508663806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:00,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:00,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:02:00,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670574475] [2021-06-06 00:02:00,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:02:00,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:02:00,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:02:00,344 INFO L87 Difference]: Start difference. First operand 7768 states and 29176 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) [2021-06-06 00:02:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:00,877 INFO L93 Difference]: Finished difference Result 13358 states and 47391 transitions. [2021-06-06 00:02:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:02:00,878 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 [2021-06-06 00:02:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:00,899 INFO L225 Difference]: With dead ends: 13358 [2021-06-06 00:02:00,899 INFO L226 Difference]: Without dead ends: 13354 [2021-06-06 00:02:00,899 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 288.1ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:02:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13354 states. [2021-06-06 00:02:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13354 to 7674. [2021-06-06 00:02:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7674 states, 7673 states have (on average 3.760328424345106) internal successors, (28853), 7673 states have internal predecessors, (28853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 28853 transitions. [2021-06-06 00:02:01,052 INFO L78 Accepts]: Start accepts. Automaton has 7674 states and 28853 transitions. Word has length 28 [2021-06-06 00:02:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:01,052 INFO L482 AbstractCegarLoop]: Abstraction has 7674 states and 28853 transitions. [2021-06-06 00:02:01,052 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) [2021-06-06 00:02:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7674 states and 28853 transitions. [2021-06-06 00:02:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:01,062 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:01,062 INFO L554 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] [2021-06-06 00:02:01,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3997,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:01,265 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:01,265 INFO L82 PathProgramCache]: Analyzing trace with hash 970254134, now seen corresponding path program 92 times [2021-06-06 00:02:01,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:01,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809453125] [2021-06-06 00:02:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:01,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:01,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809453125] [2021-06-06 00:02:01,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809453125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:01,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451476232] [2021-06-06 00:02:01,297 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 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 [2021-06-06 00:02:01,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:01,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:01,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:01,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:01,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451476232] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:01,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:01,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:02:01,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680071903] [2021-06-06 00:02:01,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:02:01,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:01,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:02:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:02:01,377 INFO L87 Difference]: Start difference. First operand 7674 states and 28853 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) [2021-06-06 00:02:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:01,753 INFO L93 Difference]: Finished difference Result 10180 states and 36418 transitions. [2021-06-06 00:02:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:02:01,753 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 [2021-06-06 00:02:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:01,769 INFO L225 Difference]: With dead ends: 10180 [2021-06-06 00:02:01,769 INFO L226 Difference]: Without dead ends: 10180 [2021-06-06 00:02:01,769 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 214.4ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:02:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10180 states. [2021-06-06 00:02:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10180 to 7620. [2021-06-06 00:02:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7620 states, 7619 states have (on average 3.7531172069825436) internal successors, (28595), 7619 states have internal predecessors, (28595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 28595 transitions. [2021-06-06 00:02:01,910 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 28595 transitions. Word has length 28 [2021-06-06 00:02:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:01,910 INFO L482 AbstractCegarLoop]: Abstraction has 7620 states and 28595 transitions. [2021-06-06 00:02:01,910 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) [2021-06-06 00:02:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 28595 transitions. [2021-06-06 00:02:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:01,920 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:01,920 INFO L554 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] [2021-06-06 00:02:02,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3998,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:02,120 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1831555688, now seen corresponding path program 93 times [2021-06-06 00:02:02,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:02,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693792517] [2021-06-06 00:02:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:02,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:02,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693792517] [2021-06-06 00:02:02,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693792517] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:02,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109644370] [2021-06-06 00:02:02,156 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 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 [2021-06-06 00:02:02,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:02:02,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:02,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:02,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109644370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:02,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:02,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:02:02,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612501533] [2021-06-06 00:02:02,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:02,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:02,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:02,232 INFO L87 Difference]: Start difference. First operand 7620 states and 28595 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) [2021-06-06 00:02:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:02,822 INFO L93 Difference]: Finished difference Result 13241 states and 46888 transitions. [2021-06-06 00:02:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:02:02,823 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 [2021-06-06 00:02:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:02,847 INFO L225 Difference]: With dead ends: 13241 [2021-06-06 00:02:02,847 INFO L226 Difference]: Without dead ends: 13229 [2021-06-06 00:02:02,848 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 325.8ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:02:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2021-06-06 00:02:02,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 7620. [2021-06-06 00:02:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7620 states, 7619 states have (on average 3.7520672004200026) internal successors, (28587), 7619 states have internal predecessors, (28587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 28587 transitions. [2021-06-06 00:02:02,999 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 28587 transitions. Word has length 28 [2021-06-06 00:02:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:02,999 INFO L482 AbstractCegarLoop]: Abstraction has 7620 states and 28587 transitions. [2021-06-06 00:02:02,999 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) [2021-06-06 00:02:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 28587 transitions. [2021-06-06 00:02:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:03,008 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:03,008 INFO L554 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] [2021-06-06 00:02:03,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3999 [2021-06-06 00:02:03,209 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:03,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:03,209 INFO L82 PathProgramCache]: Analyzing trace with hash 695130692, now seen corresponding path program 94 times [2021-06-06 00:02:03,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:03,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138935436] [2021-06-06 00:02:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:03,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:03,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138935436] [2021-06-06 00:02:03,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138935436] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:03,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742571223] [2021-06-06 00:02:03,245 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 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 [2021-06-06 00:02:03,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:03,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:03,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:03,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:03,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742571223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:03,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:03,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:02:03,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114432260] [2021-06-06 00:02:03,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:02:03,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:03,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:02:03,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:02:03,334 INFO L87 Difference]: Start difference. First operand 7620 states and 28587 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) [2021-06-06 00:02:04,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:04,381 INFO L93 Difference]: Finished difference Result 20083 states and 70057 transitions. [2021-06-06 00:02:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-06 00:02:04,382 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 [2021-06-06 00:02:04,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:04,415 INFO L225 Difference]: With dead ends: 20083 [2021-06-06 00:02:04,416 INFO L226 Difference]: Without dead ends: 20083 [2021-06-06 00:02:04,416 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 634.7ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:02:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2021-06-06 00:02:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 10419. [2021-06-06 00:02:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10419 states, 10418 states have (on average 3.7977538875023997) internal successors, (39565), 10418 states have internal predecessors, (39565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10419 states to 10419 states and 39565 transitions. [2021-06-06 00:02:04,682 INFO L78 Accepts]: Start accepts. Automaton has 10419 states and 39565 transitions. Word has length 28 [2021-06-06 00:02:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:04,682 INFO L482 AbstractCegarLoop]: Abstraction has 10419 states and 39565 transitions. [2021-06-06 00:02:04,682 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) [2021-06-06 00:02:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 10419 states and 39565 transitions. [2021-06-06 00:02:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:04,696 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:04,696 INFO L554 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] [2021-06-06 00:02:04,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4000 [2021-06-06 00:02:04,896 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash 776506780, now seen corresponding path program 95 times [2021-06-06 00:02:04,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:04,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081269345] [2021-06-06 00:02:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:04,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:04,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081269345] [2021-06-06 00:02:04,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081269345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:04,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791357379] [2021-06-06 00:02:04,932 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 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 [2021-06-06 00:02:04,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:02:04,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:04,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:04,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:05,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791357379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:05,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:05,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:02:05,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639372150] [2021-06-06 00:02:05,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:02:05,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:05,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:02:05,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:02:05,016 INFO L87 Difference]: Start difference. First operand 10419 states and 39565 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) [2021-06-06 00:02:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:06,065 INFO L93 Difference]: Finished difference Result 19333 states and 68102 transitions. [2021-06-06 00:02:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:02:06,065 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 [2021-06-06 00:02:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:06,098 INFO L225 Difference]: With dead ends: 19333 [2021-06-06 00:02:06,098 INFO L226 Difference]: Without dead ends: 19321 [2021-06-06 00:02:06,099 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 586.7ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:02:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19321 states. [2021-06-06 00:02:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19321 to 10233. [2021-06-06 00:02:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10233 states, 10232 states have (on average 3.8045347928068804) internal successors, (38928), 10232 states have internal predecessors, (38928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10233 states to 10233 states and 38928 transitions. [2021-06-06 00:02:06,348 INFO L78 Accepts]: Start accepts. Automaton has 10233 states and 38928 transitions. Word has length 28 [2021-06-06 00:02:06,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:06,348 INFO L482 AbstractCegarLoop]: Abstraction has 10233 states and 38928 transitions. [2021-06-06 00:02:06,348 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) [2021-06-06 00:02:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 10233 states and 38928 transitions. [2021-06-06 00:02:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:06,361 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:06,361 INFO L554 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] [2021-06-06 00:02:06,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4001,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:06,562 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash -738585192, now seen corresponding path program 96 times [2021-06-06 00:02:06,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:06,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929542755] [2021-06-06 00:02:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:06,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:06,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929542755] [2021-06-06 00:02:06,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929542755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:06,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538399147] [2021-06-06 00:02:06,599 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 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 [2021-06-06 00:02:06,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:02:06,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:06,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:06,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:06,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538399147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:06,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:06,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:02:06,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517156226] [2021-06-06 00:02:06,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:02:06,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:06,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:02:06,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:02:06,690 INFO L87 Difference]: Start difference. First operand 10233 states and 38928 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) [2021-06-06 00:02:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:07,637 INFO L93 Difference]: Finished difference Result 19147 states and 67441 transitions. [2021-06-06 00:02:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:02:07,638 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 [2021-06-06 00:02:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:07,670 INFO L225 Difference]: With dead ends: 19147 [2021-06-06 00:02:07,670 INFO L226 Difference]: Without dead ends: 19111 [2021-06-06 00:02:07,670 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 565.4ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:02:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19111 states. [2021-06-06 00:02:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19111 to 10277. [2021-06-06 00:02:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10277 states, 10276 states have (on average 3.802646944336318) internal successors, (39076), 10276 states have internal predecessors, (39076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 39076 transitions. [2021-06-06 00:02:07,908 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 39076 transitions. Word has length 28 [2021-06-06 00:02:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:07,908 INFO L482 AbstractCegarLoop]: Abstraction has 10277 states and 39076 transitions. [2021-06-06 00:02:07,908 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) [2021-06-06 00:02:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 39076 transitions. [2021-06-06 00:02:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:07,922 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:07,922 INFO L554 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] [2021-06-06 00:02:08,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4002 [2021-06-06 00:02:08,122 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:08,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:08,122 INFO L82 PathProgramCache]: Analyzing trace with hash 858541524, now seen corresponding path program 97 times [2021-06-06 00:02:08,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:08,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205799558] [2021-06-06 00:02:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:08,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:08,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205799558] [2021-06-06 00:02:08,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205799558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:08,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516500611] [2021-06-06 00:02:08,159 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 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 [2021-06-06 00:02:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:08,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:08,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:08,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516500611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:08,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:08,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:02:08,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310087941] [2021-06-06 00:02:08,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:08,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:08,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:08,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:08,267 INFO L87 Difference]: Start difference. First operand 10277 states and 39076 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) [2021-06-06 00:02:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:09,568 INFO L93 Difference]: Finished difference Result 19074 states and 67295 transitions. [2021-06-06 00:02:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-06 00:02:09,568 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 [2021-06-06 00:02:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:09,601 INFO L225 Difference]: With dead ends: 19074 [2021-06-06 00:02:09,601 INFO L226 Difference]: Without dead ends: 19074 [2021-06-06 00:02:09,602 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 798.5ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:02:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19074 states. [2021-06-06 00:02:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19074 to 10473. [2021-06-06 00:02:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10473 states, 10472 states have (on average 3.793544690603514) internal successors, (39726), 10472 states have internal predecessors, (39726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10473 states to 10473 states and 39726 transitions. [2021-06-06 00:02:09,840 INFO L78 Accepts]: Start accepts. Automaton has 10473 states and 39726 transitions. Word has length 28 [2021-06-06 00:02:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:09,840 INFO L482 AbstractCegarLoop]: Abstraction has 10473 states and 39726 transitions. [2021-06-06 00:02:09,840 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) [2021-06-06 00:02:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10473 states and 39726 transitions. [2021-06-06 00:02:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:09,854 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:09,854 INFO L554 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] [2021-06-06 00:02:10,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4003,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:10,054 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:10,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:10,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1793386618, now seen corresponding path program 98 times [2021-06-06 00:02:10,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:10,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763021752] [2021-06-06 00:02:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:10,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:10,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763021752] [2021-06-06 00:02:10,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763021752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:10,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216326449] [2021-06-06 00:02:10,091 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 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 [2021-06-06 00:02:10,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:10,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:10,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:10,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:10,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216326449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:10,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:10,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:02:10,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528167019] [2021-06-06 00:02:10,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:10,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:10,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:10,220 INFO L87 Difference]: Start difference. First operand 10473 states and 39726 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) [2021-06-06 00:02:11,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:11,346 INFO L93 Difference]: Finished difference Result 18684 states and 66217 transitions. [2021-06-06 00:02:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:02:11,346 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 [2021-06-06 00:02:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:11,430 INFO L225 Difference]: With dead ends: 18684 [2021-06-06 00:02:11,430 INFO L226 Difference]: Without dead ends: 18672 [2021-06-06 00:02:11,430 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 680.0ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:02:11,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18672 states. [2021-06-06 00:02:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18672 to 10355. [2021-06-06 00:02:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10355 states, 10354 states have (on average 3.7980490631639947) internal successors, (39325), 10354 states have internal predecessors, (39325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 39325 transitions. [2021-06-06 00:02:11,633 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 39325 transitions. Word has length 28 [2021-06-06 00:02:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:11,633 INFO L482 AbstractCegarLoop]: Abstraction has 10355 states and 39325 transitions. [2021-06-06 00:02:11,633 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) [2021-06-06 00:02:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 39325 transitions. [2021-06-06 00:02:11,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:11,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:11,646 INFO L554 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] [2021-06-06 00:02:11,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4004,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:11,846 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:11,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1234123500, now seen corresponding path program 99 times [2021-06-06 00:02:11,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:11,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757472987] [2021-06-06 00:02:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:11,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:11,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757472987] [2021-06-06 00:02:11,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757472987] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:11,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681970658] [2021-06-06 00:02:11,883 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 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 [2021-06-06 00:02:11,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:02:11,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:11,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:11,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681970658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:11,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:11,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:02:11,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438410985] [2021-06-06 00:02:11,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:02:11,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:11,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:02:11,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:02:11,976 INFO L87 Difference]: Start difference. First operand 10355 states and 39325 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) [2021-06-06 00:02:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:12,932 INFO L93 Difference]: Finished difference Result 17924 states and 64133 transitions. [2021-06-06 00:02:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:02:12,932 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 [2021-06-06 00:02:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:12,962 INFO L225 Difference]: With dead ends: 17924 [2021-06-06 00:02:12,963 INFO L226 Difference]: Without dead ends: 17888 [2021-06-06 00:02:12,963 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 536.4ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:02:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17888 states. [2021-06-06 00:02:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17888 to 10379. [2021-06-06 00:02:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10378 states have (on average 3.7969743688571977) internal successors, (39405), 10378 states have internal predecessors, (39405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 39405 transitions. [2021-06-06 00:02:13,244 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 39405 transitions. Word has length 28 [2021-06-06 00:02:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:13,245 INFO L482 AbstractCegarLoop]: Abstraction has 10379 states and 39405 transitions. [2021-06-06 00:02:13,245 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) [2021-06-06 00:02:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 39405 transitions. [2021-06-06 00:02:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:13,259 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:13,259 INFO L554 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] [2021-06-06 00:02:13,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4005,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:13,460 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:13,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1584729920, now seen corresponding path program 100 times [2021-06-06 00:02:13,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:13,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920191588] [2021-06-06 00:02:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:13,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:13,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920191588] [2021-06-06 00:02:13,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920191588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:13,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355383203] [2021-06-06 00:02:13,495 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 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 [2021-06-06 00:02:13,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:13,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:13,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:13,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:13,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355383203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:13,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:13,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:02:13,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537052969] [2021-06-06 00:02:13,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:13,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:13,622 INFO L87 Difference]: Start difference. First operand 10379 states and 39405 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) [2021-06-06 00:02:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:14,831 INFO L93 Difference]: Finished difference Result 26041 states and 92685 transitions. [2021-06-06 00:02:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-06 00:02:14,832 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 [2021-06-06 00:02:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:14,881 INFO L225 Difference]: With dead ends: 26041 [2021-06-06 00:02:14,881 INFO L226 Difference]: Without dead ends: 26041 [2021-06-06 00:02:14,882 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 711.3ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-06 00:02:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26041 states. [2021-06-06 00:02:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26041 to 10669. [2021-06-06 00:02:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 3.8225534308211473) internal successors, (40779), 10668 states have internal predecessors, (40779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 40779 transitions. [2021-06-06 00:02:15,167 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 40779 transitions. Word has length 28 [2021-06-06 00:02:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:15,167 INFO L482 AbstractCegarLoop]: Abstraction has 10669 states and 40779 transitions. [2021-06-06 00:02:15,167 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) [2021-06-06 00:02:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 40779 transitions. [2021-06-06 00:02:15,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:15,181 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:15,181 INFO L554 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] [2021-06-06 00:02:15,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4006 [2021-06-06 00:02:15,382 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:15,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:15,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1017777840, now seen corresponding path program 101 times [2021-06-06 00:02:15,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:15,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434807403] [2021-06-06 00:02:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:15,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:15,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434807403] [2021-06-06 00:02:15,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434807403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:15,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023960507] [2021-06-06 00:02:15,413 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 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 [2021-06-06 00:02:15,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:02:15,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:15,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:15,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:15,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023960507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:15,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:15,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:02:15,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131159158] [2021-06-06 00:02:15,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:15,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:15,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:15,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:15,584 INFO L87 Difference]: Start difference. First operand 10669 states and 40779 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) [2021-06-06 00:02:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:16,707 INFO L93 Difference]: Finished difference Result 25481 states and 91317 transitions. [2021-06-06 00:02:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-06 00:02:16,707 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 [2021-06-06 00:02:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:16,755 INFO L225 Difference]: With dead ends: 25481 [2021-06-06 00:02:16,755 INFO L226 Difference]: Without dead ends: 25481 [2021-06-06 00:02:16,756 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 727.0ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:02:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25481 states. [2021-06-06 00:02:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25481 to 10571. [2021-06-06 00:02:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10571 states, 10570 states have (on average 3.809744560075686) internal successors, (40269), 10570 states have internal predecessors, (40269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 40269 transitions. [2021-06-06 00:02:17,037 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 40269 transitions. Word has length 28 [2021-06-06 00:02:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:17,037 INFO L482 AbstractCegarLoop]: Abstraction has 10571 states and 40269 transitions. [2021-06-06 00:02:17,037 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) [2021-06-06 00:02:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 40269 transitions. [2021-06-06 00:02:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:17,052 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:17,052 INFO L554 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] [2021-06-06 00:02:17,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4007,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:17,252 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:17,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:17,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1216329654, now seen corresponding path program 102 times [2021-06-06 00:02:17,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:17,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580544289] [2021-06-06 00:02:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:17,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:17,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580544289] [2021-06-06 00:02:17,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580544289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:17,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71376259] [2021-06-06 00:02:17,284 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 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 [2021-06-06 00:02:17,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:02:17,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:17,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:17,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:17,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71376259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:17,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:17,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:02:17,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577885655] [2021-06-06 00:02:17,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:02:17,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:17,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:02:17,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:02:17,393 INFO L87 Difference]: Start difference. First operand 10571 states and 40269 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) [2021-06-06 00:02:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:18,194 INFO L93 Difference]: Finished difference Result 20226 states and 72726 transitions. [2021-06-06 00:02:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:02:18,195 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 [2021-06-06 00:02:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:18,229 INFO L225 Difference]: With dead ends: 20226 [2021-06-06 00:02:18,230 INFO L226 Difference]: Without dead ends: 20226 [2021-06-06 00:02:18,230 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 419.9ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:02:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states. [2021-06-06 00:02:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 10580. [2021-06-06 00:02:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10580 states, 10579 states have (on average 3.8086775687683145) internal successors, (40292), 10579 states have internal predecessors, (40292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10580 states to 10580 states and 40292 transitions. [2021-06-06 00:02:18,472 INFO L78 Accepts]: Start accepts. Automaton has 10580 states and 40292 transitions. Word has length 28 [2021-06-06 00:02:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:18,473 INFO L482 AbstractCegarLoop]: Abstraction has 10580 states and 40292 transitions. [2021-06-06 00:02:18,473 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) [2021-06-06 00:02:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10580 states and 40292 transitions. [2021-06-06 00:02:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:18,487 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:18,487 INFO L554 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] [2021-06-06 00:02:18,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4008,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:18,688 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:18,688 INFO L82 PathProgramCache]: Analyzing trace with hash 541607776, now seen corresponding path program 103 times [2021-06-06 00:02:18,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:18,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392727493] [2021-06-06 00:02:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:18,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:18,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392727493] [2021-06-06 00:02:18,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392727493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:18,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790698505] [2021-06-06 00:02:18,720 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 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 [2021-06-06 00:02:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:18,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:18,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:18,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790698505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:18,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:18,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:02:18,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584029785] [2021-06-06 00:02:18,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:02:18,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:18,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:02:18,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:02:18,827 INFO L87 Difference]: Start difference. First operand 10580 states and 40292 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) [2021-06-06 00:02:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:19,533 INFO L93 Difference]: Finished difference Result 18775 states and 68086 transitions. [2021-06-06 00:02:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:02:19,533 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 [2021-06-06 00:02:19,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:19,568 INFO L225 Difference]: With dead ends: 18775 [2021-06-06 00:02:19,568 INFO L226 Difference]: Without dead ends: 18775 [2021-06-06 00:02:19,568 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 380.6ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:02:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2021-06-06 00:02:19,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 10592. [2021-06-06 00:02:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10592 states, 10591 states have (on average 3.807950146350675) internal successors, (40330), 10591 states have internal predecessors, (40330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 40330 transitions. [2021-06-06 00:02:19,802 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 40330 transitions. Word has length 28 [2021-06-06 00:02:19,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:19,802 INFO L482 AbstractCegarLoop]: Abstraction has 10592 states and 40330 transitions. [2021-06-06 00:02:19,802 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) [2021-06-06 00:02:19,802 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 40330 transitions. [2021-06-06 00:02:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:19,816 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:19,816 INFO L554 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] [2021-06-06 00:02:20,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4009,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:20,016 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:20,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2099999344, now seen corresponding path program 104 times [2021-06-06 00:02:20,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:20,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905236774] [2021-06-06 00:02:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:20,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:20,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905236774] [2021-06-06 00:02:20,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905236774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:20,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141498192] [2021-06-06 00:02:20,048 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 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 [2021-06-06 00:02:20,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:20,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:20,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:20,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:20,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141498192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:20,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:20,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:02:20,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104734838] [2021-06-06 00:02:20,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:20,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:20,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:20,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:20,216 INFO L87 Difference]: Start difference. First operand 10592 states and 40330 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) [2021-06-06 00:02:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:21,199 INFO L93 Difference]: Finished difference Result 19382 states and 69829 transitions. [2021-06-06 00:02:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-06 00:02:21,199 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 [2021-06-06 00:02:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:21,233 INFO L225 Difference]: With dead ends: 19382 [2021-06-06 00:02:21,233 INFO L226 Difference]: Without dead ends: 19382 [2021-06-06 00:02:21,233 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 673.7ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-06 00:02:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19382 states. [2021-06-06 00:02:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19382 to 10700. [2021-06-06 00:02:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10700 states, 10699 states have (on average 3.800729040097205) internal successors, (40664), 10699 states have internal predecessors, (40664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 40664 transitions. [2021-06-06 00:02:21,471 INFO L78 Accepts]: Start accepts. Automaton has 10700 states and 40664 transitions. Word has length 28 [2021-06-06 00:02:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:21,471 INFO L482 AbstractCegarLoop]: Abstraction has 10700 states and 40664 transitions. [2021-06-06 00:02:21,471 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) [2021-06-06 00:02:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 10700 states and 40664 transitions. [2021-06-06 00:02:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:21,485 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:21,485 INFO L554 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] [2021-06-06 00:02:21,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4010 [2021-06-06 00:02:21,685 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash -456960190, now seen corresponding path program 105 times [2021-06-06 00:02:21,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:21,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324630667] [2021-06-06 00:02:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:21,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:21,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324630667] [2021-06-06 00:02:21,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324630667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:21,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395595759] [2021-06-06 00:02:21,717 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 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 [2021-06-06 00:02:21,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:02:21,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:21,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:21,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395595759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:21,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:21,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:02:21,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515796637] [2021-06-06 00:02:21,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:21,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:21,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:21,827 INFO L87 Difference]: Start difference. First operand 10700 states and 40664 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) [2021-06-06 00:02:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:22,723 INFO L93 Difference]: Finished difference Result 18954 states and 68665 transitions. [2021-06-06 00:02:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:02:22,723 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 [2021-06-06 00:02:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:22,759 INFO L225 Difference]: With dead ends: 18954 [2021-06-06 00:02:22,759 INFO L226 Difference]: Without dead ends: 18950 [2021-06-06 00:02:22,759 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 559.5ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:02:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18950 states. [2021-06-06 00:02:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18950 to 10626. [2021-06-06 00:02:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10626 states, 10625 states have (on average 3.804705882352941) internal successors, (40425), 10625 states have internal predecessors, (40425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10626 states to 10626 states and 40425 transitions. [2021-06-06 00:02:23,047 INFO L78 Accepts]: Start accepts. Automaton has 10626 states and 40425 transitions. Word has length 28 [2021-06-06 00:02:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:23,048 INFO L482 AbstractCegarLoop]: Abstraction has 10626 states and 40425 transitions. [2021-06-06 00:02:23,048 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) [2021-06-06 00:02:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 10626 states and 40425 transitions. [2021-06-06 00:02:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:23,063 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:23,063 INFO L554 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] [2021-06-06 00:02:23,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4011 [2021-06-06 00:02:23,263 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1748478926, now seen corresponding path program 106 times [2021-06-06 00:02:23,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:23,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004289949] [2021-06-06 00:02:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:23,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:23,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004289949] [2021-06-06 00:02:23,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004289949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:23,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110090944] [2021-06-06 00:02:23,303 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 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 [2021-06-06 00:02:23,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:23,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:23,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:23,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:23,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110090944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:23,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:23,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:02:23,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946023435] [2021-06-06 00:02:23,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:23,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:23,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:23,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:23,409 INFO L87 Difference]: Start difference. First operand 10626 states and 40425 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) [2021-06-06 00:02:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:24,368 INFO L93 Difference]: Finished difference Result 18381 states and 66150 transitions. [2021-06-06 00:02:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:02:24,368 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 [2021-06-06 00:02:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:24,400 INFO L225 Difference]: With dead ends: 18381 [2021-06-06 00:02:24,400 INFO L226 Difference]: Without dead ends: 18381 [2021-06-06 00:02:24,401 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 595.3ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:02:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18381 states. [2021-06-06 00:02:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18381 to 10853. [2021-06-06 00:02:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10853 states, 10852 states have (on average 3.807869517139698) internal successors, (41323), 10852 states have internal predecessors, (41323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10853 states to 10853 states and 41323 transitions. [2021-06-06 00:02:24,638 INFO L78 Accepts]: Start accepts. Automaton has 10853 states and 41323 transitions. Word has length 28 [2021-06-06 00:02:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:24,638 INFO L482 AbstractCegarLoop]: Abstraction has 10853 states and 41323 transitions. [2021-06-06 00:02:24,638 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) [2021-06-06 00:02:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10853 states and 41323 transitions. [2021-06-06 00:02:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:24,653 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:24,653 INFO L554 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] [2021-06-06 00:02:24,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4012 [2021-06-06 00:02:24,853 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:24,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:24,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1366168690, now seen corresponding path program 107 times [2021-06-06 00:02:24,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:24,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649970115] [2021-06-06 00:02:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:24,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:24,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649970115] [2021-06-06 00:02:24,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649970115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:24,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390839210] [2021-06-06 00:02:24,890 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 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 [2021-06-06 00:02:24,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 00:02:24,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:24,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:24,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:24,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390839210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:24,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:24,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:02:24,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723700867] [2021-06-06 00:02:24,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:24,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:24,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:24,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:24,992 INFO L87 Difference]: Start difference. First operand 10853 states and 41323 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) [2021-06-06 00:02:25,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:25,876 INFO L93 Difference]: Finished difference Result 18091 states and 65344 transitions. [2021-06-06 00:02:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:02:25,877 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 [2021-06-06 00:02:25,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:25,908 INFO L225 Difference]: With dead ends: 18091 [2021-06-06 00:02:25,908 INFO L226 Difference]: Without dead ends: 18079 [2021-06-06 00:02:25,908 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 536.0ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:02:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18079 states. [2021-06-06 00:02:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18079 to 10955. [2021-06-06 00:02:26,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10955 states, 10954 states have (on average 3.8018988497352564) internal successors, (41646), 10954 states have internal predecessors, (41646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 41646 transitions. [2021-06-06 00:02:26,136 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 41646 transitions. Word has length 28 [2021-06-06 00:02:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:26,136 INFO L482 AbstractCegarLoop]: Abstraction has 10955 states and 41646 transitions. [2021-06-06 00:02:26,136 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) [2021-06-06 00:02:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 41646 transitions. [2021-06-06 00:02:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:26,151 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:26,151 INFO L554 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] [2021-06-06 00:02:26,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4013 [2021-06-06 00:02:26,351 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:26,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:26,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1561241668, now seen corresponding path program 71 times [2021-06-06 00:02:26,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:26,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912334151] [2021-06-06 00:02:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:26,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:26,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912334151] [2021-06-06 00:02:26,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912334151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:26,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203930775] [2021-06-06 00:02:26,388 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 [2021-06-06 00:02:26,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:02:26,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:26,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:26,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:26,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203930775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:26,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:26,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:02:26,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364728633] [2021-06-06 00:02:26,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:26,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:26,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:26,469 INFO L87 Difference]: Start difference. First operand 10955 states and 41646 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) [2021-06-06 00:02:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:26,881 INFO L93 Difference]: Finished difference Result 15599 states and 57718 transitions. [2021-06-06 00:02:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:02:26,881 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 [2021-06-06 00:02:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:26,908 INFO L225 Difference]: With dead ends: 15599 [2021-06-06 00:02:26,909 INFO L226 Difference]: Without dead ends: 15599 [2021-06-06 00:02:26,909 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 223.6ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:02:26,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15599 states. [2021-06-06 00:02:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15599 to 11027. [2021-06-06 00:02:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11027 states, 11026 states have (on average 3.7972066025757303) internal successors, (41868), 11026 states have internal predecessors, (41868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11027 states to 11027 states and 41868 transitions. [2021-06-06 00:02:27,112 INFO L78 Accepts]: Start accepts. Automaton has 11027 states and 41868 transitions. Word has length 28 [2021-06-06 00:02:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:27,112 INFO L482 AbstractCegarLoop]: Abstraction has 11027 states and 41868 transitions. [2021-06-06 00:02:27,112 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) [2021-06-06 00:02:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 11027 states and 41868 transitions. [2021-06-06 00:02:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:27,127 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:27,127 INFO L554 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] [2021-06-06 00:02:27,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4014,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:27,327 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:27,328 INFO L82 PathProgramCache]: Analyzing trace with hash 963219036, now seen corresponding path program 72 times [2021-06-06 00:02:27,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:27,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954553934] [2021-06-06 00:02:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:27,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:27,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954553934] [2021-06-06 00:02:27,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954553934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:27,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313689494] [2021-06-06 00:02:27,359 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 [2021-06-06 00:02:27,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:02:27,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:27,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:27,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:27,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313689494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:27,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:27,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:02:27,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939927230] [2021-06-06 00:02:27,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:02:27,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:27,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:02:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:02:27,439 INFO L87 Difference]: Start difference. First operand 11027 states and 41868 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) [2021-06-06 00:02:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:27,896 INFO L93 Difference]: Finished difference Result 16567 states and 60532 transitions. [2021-06-06 00:02:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:02:27,896 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 [2021-06-06 00:02:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:27,925 INFO L225 Difference]: With dead ends: 16567 [2021-06-06 00:02:27,925 INFO L226 Difference]: Without dead ends: 16567 [2021-06-06 00:02:27,926 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 259.8ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:02:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16567 states. [2021-06-06 00:02:28,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16567 to 11355. [2021-06-06 00:02:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11355 states, 11354 states have (on average 3.779284833538841) internal successors, (42910), 11354 states have internal predecessors, (42910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11355 states to 11355 states and 42910 transitions. [2021-06-06 00:02:28,183 INFO L78 Accepts]: Start accepts. Automaton has 11355 states and 42910 transitions. Word has length 28 [2021-06-06 00:02:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:28,184 INFO L482 AbstractCegarLoop]: Abstraction has 11355 states and 42910 transitions. [2021-06-06 00:02:28,184 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) [2021-06-06 00:02:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 11355 states and 42910 transitions. [2021-06-06 00:02:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:28,198 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:28,198 INFO L554 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] [2021-06-06 00:02:28,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4015,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:28,399 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:28,399 INFO L82 PathProgramCache]: Analyzing trace with hash -119803620, now seen corresponding path program 73 times [2021-06-06 00:02:28,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:28,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848397013] [2021-06-06 00:02:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:28,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:28,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848397013] [2021-06-06 00:02:28,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848397013] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:28,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971717569] [2021-06-06 00:02:28,429 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 [2021-06-06 00:02:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:28,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:28,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:28,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971717569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:28,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:28,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-06 00:02:28,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344548415] [2021-06-06 00:02:28,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:28,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:28,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:28,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:28,538 INFO L87 Difference]: Start difference. First operand 11355 states and 42910 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 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) [2021-06-06 00:02:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:28,981 INFO L93 Difference]: Finished difference Result 16375 states and 60421 transitions. [2021-06-06 00:02:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:02:28,981 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 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 [2021-06-06 00:02:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:29,010 INFO L225 Difference]: With dead ends: 16375 [2021-06-06 00:02:29,010 INFO L226 Difference]: Without dead ends: 16331 [2021-06-06 00:02:29,010 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 278.1ms TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:02:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2021-06-06 00:02:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 13242. [2021-06-06 00:02:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13242 states, 13241 states have (on average 3.819726606751756) internal successors, (50577), 13241 states have internal predecessors, (50577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13242 states to 13242 states and 50577 transitions. [2021-06-06 00:02:29,247 INFO L78 Accepts]: Start accepts. Automaton has 13242 states and 50577 transitions. Word has length 28 [2021-06-06 00:02:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:29,247 INFO L482 AbstractCegarLoop]: Abstraction has 13242 states and 50577 transitions. [2021-06-06 00:02:29,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 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) [2021-06-06 00:02:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 13242 states and 50577 transitions. [2021-06-06 00:02:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:29,265 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:29,265 INFO L554 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] [2021-06-06 00:02:29,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4016,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:29,465 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:29,466 INFO L82 PathProgramCache]: Analyzing trace with hash 918397894, now seen corresponding path program 74 times [2021-06-06 00:02:29,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:29,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946580743] [2021-06-06 00:02:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:29,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:29,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946580743] [2021-06-06 00:02:29,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946580743] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:29,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606224001] [2021-06-06 00:02:29,498 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 [2021-06-06 00:02:29,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:29,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:29,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:29,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:29,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606224001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:29,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:29,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:02:29,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436432753] [2021-06-06 00:02:29,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:02:29,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:29,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:02:29,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:02:29,573 INFO L87 Difference]: Start difference. First operand 13242 states and 50577 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) [2021-06-06 00:02:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:29,958 INFO L93 Difference]: Finished difference Result 18146 states and 67670 transitions. [2021-06-06 00:02:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:02:29,959 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 [2021-06-06 00:02:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:29,991 INFO L225 Difference]: With dead ends: 18146 [2021-06-06 00:02:29,991 INFO L226 Difference]: Without dead ends: 18138 [2021-06-06 00:02:29,992 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 203.6ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:02:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18138 states. [2021-06-06 00:02:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18138 to 13160. [2021-06-06 00:02:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13160 states, 13159 states have (on average 3.8226308990044835) internal successors, (50302), 13159 states have internal predecessors, (50302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13160 states to 13160 states and 50302 transitions. [2021-06-06 00:02:30,333 INFO L78 Accepts]: Start accepts. Automaton has 13160 states and 50302 transitions. Word has length 28 [2021-06-06 00:02:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:30,333 INFO L482 AbstractCegarLoop]: Abstraction has 13160 states and 50302 transitions. [2021-06-06 00:02:30,333 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) [2021-06-06 00:02:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13160 states and 50302 transitions. [2021-06-06 00:02:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:30,351 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:30,351 INFO L554 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] [2021-06-06 00:02:30,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4017,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:30,551 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1515734552, now seen corresponding path program 75 times [2021-06-06 00:02:30,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:30,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366799521] [2021-06-06 00:02:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:30,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:30,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366799521] [2021-06-06 00:02:30,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366799521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:30,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309091596] [2021-06-06 00:02:30,593 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 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 [2021-06-06 00:02:30,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:02:30,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:30,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:30,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309091596] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:30,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:30,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:02:30,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124782613] [2021-06-06 00:02:30,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:30,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:30,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:30,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:30,669 INFO L87 Difference]: Start difference. First operand 13160 states and 50302 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) [2021-06-06 00:02:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:31,079 INFO L93 Difference]: Finished difference Result 18024 states and 67311 transitions. [2021-06-06 00:02:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:02:31,079 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 [2021-06-06 00:02:31,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:31,111 INFO L225 Difference]: With dead ends: 18024 [2021-06-06 00:02:31,111 INFO L226 Difference]: Without dead ends: 18012 [2021-06-06 00:02:31,111 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 215.7ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:02:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18012 states. [2021-06-06 00:02:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18012 to 13126. [2021-06-06 00:02:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13126 states, 13125 states have (on average 3.8246857142857142) internal successors, (50199), 13125 states have internal predecessors, (50199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13126 states to 13126 states and 50199 transitions. [2021-06-06 00:02:31,360 INFO L78 Accepts]: Start accepts. Automaton has 13126 states and 50199 transitions. Word has length 28 [2021-06-06 00:02:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:31,361 INFO L482 AbstractCegarLoop]: Abstraction has 13126 states and 50199 transitions. [2021-06-06 00:02:31,361 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) [2021-06-06 00:02:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 13126 states and 50199 transitions. [2021-06-06 00:02:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:31,379 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:31,379 INFO L554 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] [2021-06-06 00:02:31,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4018 [2021-06-06 00:02:31,579 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash 860325080, now seen corresponding path program 76 times [2021-06-06 00:02:31,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:31,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809979223] [2021-06-06 00:02:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:31,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:31,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809979223] [2021-06-06 00:02:31,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809979223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:31,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427818211] [2021-06-06 00:02:31,611 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 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 [2021-06-06 00:02:31,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:31,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:31,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:31,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:31,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427818211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:31,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:31,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:02:31,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598924653] [2021-06-06 00:02:31,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:02:31,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:31,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:02:31,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:02:31,731 INFO L87 Difference]: Start difference. First operand 13126 states and 50199 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) [2021-06-06 00:02:32,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:32,584 INFO L93 Difference]: Finished difference Result 24612 states and 88773 transitions. [2021-06-06 00:02:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:02:32,584 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 [2021-06-06 00:02:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:32,630 INFO L225 Difference]: With dead ends: 24612 [2021-06-06 00:02:32,630 INFO L226 Difference]: Without dead ends: 24612 [2021-06-06 00:02:32,631 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 458.5ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:02:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24612 states. [2021-06-06 00:02:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24612 to 13108. [2021-06-06 00:02:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13108 states, 13107 states have (on average 3.8236057068741895) internal successors, (50116), 13107 states have internal predecessors, (50116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13108 states to 13108 states and 50116 transitions. [2021-06-06 00:02:32,976 INFO L78 Accepts]: Start accepts. Automaton has 13108 states and 50116 transitions. Word has length 28 [2021-06-06 00:02:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:32,976 INFO L482 AbstractCegarLoop]: Abstraction has 13108 states and 50116 transitions. [2021-06-06 00:02:32,976 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) [2021-06-06 00:02:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand 13108 states and 50116 transitions. [2021-06-06 00:02:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:32,994 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:32,994 INFO L554 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] [2021-06-06 00:02:33,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4019,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:33,194 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:33,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1387096988, now seen corresponding path program 108 times [2021-06-06 00:02:33,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:33,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624344231] [2021-06-06 00:02:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:33,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:33,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624344231] [2021-06-06 00:02:33,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624344231] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:33,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299942219] [2021-06-06 00:02:33,219 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 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 [2021-06-06 00:02:33,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:02:33,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:33,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:33,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:33,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299942219] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:33,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:33,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:02:33,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486450338] [2021-06-06 00:02:33,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:02:33,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:33,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:02:33,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:02:33,320 INFO L87 Difference]: Start difference. First operand 13108 states and 50116 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) [2021-06-06 00:02:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:33,929 INFO L93 Difference]: Finished difference Result 20270 states and 73737 transitions. [2021-06-06 00:02:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:02:33,930 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 [2021-06-06 00:02:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:33,964 INFO L225 Difference]: With dead ends: 20270 [2021-06-06 00:02:33,964 INFO L226 Difference]: Without dead ends: 20257 [2021-06-06 00:02:33,965 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 333.1ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:02:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20257 states. [2021-06-06 00:02:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20257 to 14410. [2021-06-06 00:02:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14410 states, 14409 states have (on average 3.8785481296411963) internal successors, (55886), 14409 states have internal predecessors, (55886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14410 states to 14410 states and 55886 transitions. [2021-06-06 00:02:34,260 INFO L78 Accepts]: Start accepts. Automaton has 14410 states and 55886 transitions. Word has length 28 [2021-06-06 00:02:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:34,260 INFO L482 AbstractCegarLoop]: Abstraction has 14410 states and 55886 transitions. [2021-06-06 00:02:34,261 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) [2021-06-06 00:02:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14410 states and 55886 transitions. [2021-06-06 00:02:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:34,281 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:34,281 INFO L554 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] [2021-06-06 00:02:34,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4020 [2021-06-06 00:02:34,481 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:34,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2059509770, now seen corresponding path program 109 times [2021-06-06 00:02:34,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:34,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860708104] [2021-06-06 00:02:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:34,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:34,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860708104] [2021-06-06 00:02:34,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860708104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:34,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257214732] [2021-06-06 00:02:34,506 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 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 [2021-06-06 00:02:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:34,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:34,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:34,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257214732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:34,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:34,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:02:34,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933585869] [2021-06-06 00:02:34,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:02:34,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:34,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:02:34,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:02:34,607 INFO L87 Difference]: Start difference. First operand 14410 states and 55886 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) [2021-06-06 00:02:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:35,271 INFO L93 Difference]: Finished difference Result 20362 states and 73979 transitions. [2021-06-06 00:02:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:02:35,272 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 [2021-06-06 00:02:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:35,307 INFO L225 Difference]: With dead ends: 20362 [2021-06-06 00:02:35,307 INFO L226 Difference]: Without dead ends: 20356 [2021-06-06 00:02:35,307 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 372.2ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:02:35,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20356 states. [2021-06-06 00:02:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20356 to 14386. [2021-06-06 00:02:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14386 states, 14385 states have (on average 3.877650330205075) internal successors, (55780), 14385 states have internal predecessors, (55780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14386 states to 14386 states and 55780 transitions. [2021-06-06 00:02:35,716 INFO L78 Accepts]: Start accepts. Automaton has 14386 states and 55780 transitions. Word has length 28 [2021-06-06 00:02:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:35,716 INFO L482 AbstractCegarLoop]: Abstraction has 14386 states and 55780 transitions. [2021-06-06 00:02:35,716 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) [2021-06-06 00:02:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 14386 states and 55780 transitions. [2021-06-06 00:02:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:35,738 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:35,738 INFO L554 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] [2021-06-06 00:02:35,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4021 [2021-06-06 00:02:35,939 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:35,939 INFO L82 PathProgramCache]: Analyzing trace with hash 244170948, now seen corresponding path program 110 times [2021-06-06 00:02:35,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:35,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937258997] [2021-06-06 00:02:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:35,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:35,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937258997] [2021-06-06 00:02:35,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937258997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:35,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415250867] [2021-06-06 00:02:35,964 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 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 [2021-06-06 00:02:36,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:36,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:36,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:36,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:36,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415250867] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:36,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:36,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:02:36,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082410730] [2021-06-06 00:02:36,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:36,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:36,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:36,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:36,078 INFO L87 Difference]: Start difference. First operand 14386 states and 55780 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) [2021-06-06 00:02:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:36,695 INFO L93 Difference]: Finished difference Result 23158 states and 84169 transitions. [2021-06-06 00:02:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:02:36,696 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 [2021-06-06 00:02:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:36,737 INFO L225 Difference]: With dead ends: 23158 [2021-06-06 00:02:36,737 INFO L226 Difference]: Without dead ends: 23145 [2021-06-06 00:02:36,737 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 313.9ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:02:36,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23145 states. [2021-06-06 00:02:37,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23145 to 14458. [2021-06-06 00:02:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14458 states, 14457 states have (on average 3.882548246524175) internal successors, (56130), 14457 states have internal predecessors, (56130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14458 states to 14458 states and 56130 transitions. [2021-06-06 00:02:37,050 INFO L78 Accepts]: Start accepts. Automaton has 14458 states and 56130 transitions. Word has length 28 [2021-06-06 00:02:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:37,050 INFO L482 AbstractCegarLoop]: Abstraction has 14458 states and 56130 transitions. [2021-06-06 00:02:37,050 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) [2021-06-06 00:02:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 14458 states and 56130 transitions. [2021-06-06 00:02:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:37,072 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:37,072 INFO L554 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] [2021-06-06 00:02:37,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 187 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4022 [2021-06-06 00:02:37,272 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:37,272 INFO L82 PathProgramCache]: Analyzing trace with hash -438573382, now seen corresponding path program 111 times [2021-06-06 00:02:37,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:37,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837604019] [2021-06-06 00:02:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:37,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:37,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837604019] [2021-06-06 00:02:37,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837604019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:37,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646538554] [2021-06-06 00:02:37,297 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 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 [2021-06-06 00:02:37,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:02:37,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:37,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:37,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:37,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646538554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:37,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:37,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:02:37,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463335862] [2021-06-06 00:02:37,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:37,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:37,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:37,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:37,392 INFO L87 Difference]: Start difference. First operand 14458 states and 56130 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) [2021-06-06 00:02:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:38,026 INFO L93 Difference]: Finished difference Result 24792 states and 89366 transitions. [2021-06-06 00:02:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:02:38,026 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 [2021-06-06 00:02:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:38,073 INFO L225 Difference]: With dead ends: 24792 [2021-06-06 00:02:38,073 INFO L226 Difference]: Without dead ends: 24792 [2021-06-06 00:02:38,073 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 349.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:02:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24792 states. [2021-06-06 00:02:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24792 to 14502. [2021-06-06 00:02:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14502 states, 14501 states have (on average 3.8793876284394178) internal successors, (56255), 14501 states have internal predecessors, (56255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14502 states to 14502 states and 56255 transitions. [2021-06-06 00:02:38,462 INFO L78 Accepts]: Start accepts. Automaton has 14502 states and 56255 transitions. Word has length 28 [2021-06-06 00:02:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:38,462 INFO L482 AbstractCegarLoop]: Abstraction has 14502 states and 56255 transitions. [2021-06-06 00:02:38,462 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) [2021-06-06 00:02:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 14502 states and 56255 transitions. [2021-06-06 00:02:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:38,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:38,482 INFO L554 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] [2021-06-06 00:02:38,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4023 [2021-06-06 00:02:38,682 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:38,683 INFO L82 PathProgramCache]: Analyzing trace with hash -362417666, now seen corresponding path program 77 times [2021-06-06 00:02:38,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:38,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440396487] [2021-06-06 00:02:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:38,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:38,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440396487] [2021-06-06 00:02:38,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440396487] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:38,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691610134] [2021-06-06 00:02:38,713 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 [2021-06-06 00:02:38,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 00:02:38,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:38,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:38,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:38,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691610134] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:38,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:38,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:02:38,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083245944] [2021-06-06 00:02:38,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:02:38,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:38,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:02:38,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:02:38,805 INFO L87 Difference]: Start difference. First operand 14502 states and 56255 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) [2021-06-06 00:02:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:39,657 INFO L93 Difference]: Finished difference Result 24486 states and 90901 transitions. [2021-06-06 00:02:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:02:39,657 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 [2021-06-06 00:02:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:39,703 INFO L225 Difference]: With dead ends: 24486 [2021-06-06 00:02:39,703 INFO L226 Difference]: Without dead ends: 24482 [2021-06-06 00:02:39,703 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 472.1ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:02:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24482 states. [2021-06-06 00:02:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24482 to 14756. [2021-06-06 00:02:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14756 states, 14755 states have (on average 3.869739071501186) internal successors, (57098), 14755 states have internal predecessors, (57098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14756 states to 14756 states and 57098 transitions. [2021-06-06 00:02:40,051 INFO L78 Accepts]: Start accepts. Automaton has 14756 states and 57098 transitions. Word has length 28 [2021-06-06 00:02:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:40,051 INFO L482 AbstractCegarLoop]: Abstraction has 14756 states and 57098 transitions. [2021-06-06 00:02:40,051 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) [2021-06-06 00:02:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 14756 states and 57098 transitions. [2021-06-06 00:02:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:40,072 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:40,072 INFO L554 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] [2021-06-06 00:02:40,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 189 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4024 [2021-06-06 00:02:40,277 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash 502966272, now seen corresponding path program 112 times [2021-06-06 00:02:40,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:40,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192068323] [2021-06-06 00:02:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:40,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:40,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192068323] [2021-06-06 00:02:40,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192068323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:40,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923694487] [2021-06-06 00:02:40,305 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 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 [2021-06-06 00:02:40,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:40,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:40,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:40,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:40,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923694487] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:40,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:40,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:02:40,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439218066] [2021-06-06 00:02:40,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:40,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:40,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:40,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:40,390 INFO L87 Difference]: Start difference. First operand 14756 states and 57098 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) [2021-06-06 00:02:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:40,982 INFO L93 Difference]: Finished difference Result 21631 states and 80082 transitions. [2021-06-06 00:02:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:02:40,982 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 [2021-06-06 00:02:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:41,021 INFO L225 Difference]: With dead ends: 21631 [2021-06-06 00:02:41,021 INFO L226 Difference]: Without dead ends: 21608 [2021-06-06 00:02:41,021 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 299.3ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:02:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21608 states. [2021-06-06 00:02:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21608 to 15111. [2021-06-06 00:02:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15111 states, 15110 states have (on average 3.888682991396426) internal successors, (58758), 15110 states have internal predecessors, (58758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15111 states to 15111 states and 58758 transitions. [2021-06-06 00:02:41,374 INFO L78 Accepts]: Start accepts. Automaton has 15111 states and 58758 transitions. Word has length 28 [2021-06-06 00:02:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:41,374 INFO L482 AbstractCegarLoop]: Abstraction has 15111 states and 58758 transitions. [2021-06-06 00:02:41,374 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) [2021-06-06 00:02:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 15111 states and 58758 transitions. [2021-06-06 00:02:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:41,395 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:41,395 INFO L554 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] [2021-06-06 00:02:41,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4025,190 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:41,601 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:41,601 INFO L82 PathProgramCache]: Analyzing trace with hash -179778058, now seen corresponding path program 113 times [2021-06-06 00:02:41,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:41,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179801580] [2021-06-06 00:02:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:41,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:41,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179801580] [2021-06-06 00:02:41,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179801580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:41,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681500245] [2021-06-06 00:02:41,629 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 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 [2021-06-06 00:02:41,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:02:41,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:41,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:41,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:41,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681500245] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:41,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:41,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:02:41,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142815106] [2021-06-06 00:02:41,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:41,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:41,718 INFO L87 Difference]: Start difference. First operand 15111 states and 58758 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) [2021-06-06 00:02:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:42,371 INFO L93 Difference]: Finished difference Result 21728 states and 79303 transitions. [2021-06-06 00:02:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:02:42,372 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 [2021-06-06 00:02:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:42,410 INFO L225 Difference]: With dead ends: 21728 [2021-06-06 00:02:42,410 INFO L226 Difference]: Without dead ends: 21728 [2021-06-06 00:02:42,411 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 368.7ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:02:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21728 states. [2021-06-06 00:02:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21728 to 15230. [2021-06-06 00:02:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15230 states, 15229 states have (on average 3.880753824939261) internal successors, (59100), 15229 states have internal predecessors, (59100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15230 states to 15230 states and 59100 transitions. [2021-06-06 00:02:42,708 INFO L78 Accepts]: Start accepts. Automaton has 15230 states and 59100 transitions. Word has length 28 [2021-06-06 00:02:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:42,708 INFO L482 AbstractCegarLoop]: Abstraction has 15230 states and 59100 transitions. [2021-06-06 00:02:42,709 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) [2021-06-06 00:02:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 15230 states and 59100 transitions. [2021-06-06 00:02:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:42,729 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:42,729 INFO L554 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] [2021-06-06 00:02:42,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4026,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:42,929 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:42,929 INFO L82 PathProgramCache]: Analyzing trace with hash -499896522, now seen corresponding path program 114 times [2021-06-06 00:02:42,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:42,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871718629] [2021-06-06 00:02:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:42,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:42,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871718629] [2021-06-06 00:02:42,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871718629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:42,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041180128] [2021-06-06 00:02:42,966 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 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 [2021-06-06 00:02:42,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:02:42,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:42,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:42,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:43,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041180128] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:43,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:43,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:02:43,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689121849] [2021-06-06 00:02:43,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:02:43,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:43,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:02:43,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:02:43,056 INFO L87 Difference]: Start difference. First operand 15230 states and 59100 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) [2021-06-06 00:02:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:43,662 INFO L93 Difference]: Finished difference Result 24246 states and 88914 transitions. [2021-06-06 00:02:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:02:43,662 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 [2021-06-06 00:02:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:43,707 INFO L225 Difference]: With dead ends: 24246 [2021-06-06 00:02:43,707 INFO L226 Difference]: Without dead ends: 24246 [2021-06-06 00:02:43,707 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 323.9ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:02:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24246 states. [2021-06-06 00:02:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24246 to 16389. [2021-06-06 00:02:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16389 states, 16388 states have (on average 3.862521357090554) internal successors, (63299), 16388 states have internal predecessors, (63299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16389 states to 16389 states and 63299 transitions. [2021-06-06 00:02:44,123 INFO L78 Accepts]: Start accepts. Automaton has 16389 states and 63299 transitions. Word has length 28 [2021-06-06 00:02:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:44,123 INFO L482 AbstractCegarLoop]: Abstraction has 16389 states and 63299 transitions. [2021-06-06 00:02:44,123 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) [2021-06-06 00:02:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 16389 states and 63299 transitions. [2021-06-06 00:02:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:44,144 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:44,144 INFO L554 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] [2021-06-06 00:02:44,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4027,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:44,344 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:44,344 INFO L82 PathProgramCache]: Analyzing trace with hash 389506442, now seen corresponding path program 115 times [2021-06-06 00:02:44,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:44,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523615533] [2021-06-06 00:02:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:44,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:44,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523615533] [2021-06-06 00:02:44,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523615533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:44,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396708659] [2021-06-06 00:02:44,373 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 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 [2021-06-06 00:02:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:44,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:44,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:44,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396708659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:44,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:44,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:02:44,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56227036] [2021-06-06 00:02:44,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:02:44,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:44,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:02:44,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:02:44,471 INFO L87 Difference]: Start difference. First operand 16389 states and 63299 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) [2021-06-06 00:02:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:45,271 INFO L93 Difference]: Finished difference Result 27385 states and 99086 transitions. [2021-06-06 00:02:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:02:45,272 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 [2021-06-06 00:02:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:45,325 INFO L225 Difference]: With dead ends: 27385 [2021-06-06 00:02:45,325 INFO L226 Difference]: Without dead ends: 27385 [2021-06-06 00:02:45,326 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 422.9ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:02:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27385 states. [2021-06-06 00:02:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27385 to 16619. [2021-06-06 00:02:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16619 states, 16618 states have (on average 3.8775424238777227) internal successors, (64437), 16618 states have internal predecessors, (64437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16619 states to 16619 states and 64437 transitions. [2021-06-06 00:02:45,668 INFO L78 Accepts]: Start accepts. Automaton has 16619 states and 64437 transitions. Word has length 28 [2021-06-06 00:02:45,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:45,668 INFO L482 AbstractCegarLoop]: Abstraction has 16619 states and 64437 transitions. [2021-06-06 00:02:45,668 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) [2021-06-06 00:02:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 16619 states and 64437 transitions. [2021-06-06 00:02:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:45,690 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:45,690 INFO L554 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] [2021-06-06 00:02:45,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4028,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:45,890 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:45,890 INFO L82 PathProgramCache]: Analyzing trace with hash -933026596, now seen corresponding path program 78 times [2021-06-06 00:02:45,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:45,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398930795] [2021-06-06 00:02:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:45,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:45,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398930795] [2021-06-06 00:02:45,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398930795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:45,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153412200] [2021-06-06 00:02:45,926 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 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 [2021-06-06 00:02:45,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:02:45,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:45,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:46,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153412200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:46,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:46,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:02:46,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718184146] [2021-06-06 00:02:46,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:46,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:46,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:46,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:46,042 INFO L87 Difference]: Start difference. First operand 16619 states and 64437 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) [2021-06-06 00:02:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:47,500 INFO L93 Difference]: Finished difference Result 42879 states and 155463 transitions. [2021-06-06 00:02:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:02:47,501 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 [2021-06-06 00:02:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:47,588 INFO L225 Difference]: With dead ends: 42879 [2021-06-06 00:02:47,588 INFO L226 Difference]: Without dead ends: 42879 [2021-06-06 00:02:47,588 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 805.3ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:02:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42879 states. [2021-06-06 00:02:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42879 to 17863. [2021-06-06 00:02:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17863 states, 17862 states have (on average 3.9155189788377562) internal successors, (69939), 17862 states have internal predecessors, (69939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17863 states to 17863 states and 69939 transitions. [2021-06-06 00:02:48,229 INFO L78 Accepts]: Start accepts. Automaton has 17863 states and 69939 transitions. Word has length 28 [2021-06-06 00:02:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:48,230 INFO L482 AbstractCegarLoop]: Abstraction has 17863 states and 69939 transitions. [2021-06-06 00:02:48,230 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) [2021-06-06 00:02:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 17863 states and 69939 transitions. [2021-06-06 00:02:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:48,253 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:48,253 INFO L554 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] [2021-06-06 00:02:48,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4029,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:48,454 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:48,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:48,454 INFO L82 PathProgramCache]: Analyzing trace with hash -366074516, now seen corresponding path program 79 times [2021-06-06 00:02:48,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:48,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015211188] [2021-06-06 00:02:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:48,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:48,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015211188] [2021-06-06 00:02:48,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015211188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:48,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205616255] [2021-06-06 00:02:48,486 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 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 [2021-06-06 00:02:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:48,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:48,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:48,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205616255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:48,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:48,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:02:48,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717626163] [2021-06-06 00:02:48,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:48,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:48,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:48,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:48,599 INFO L87 Difference]: Start difference. First operand 17863 states and 69939 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) [2021-06-06 00:02:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:49,945 INFO L93 Difference]: Finished difference Result 41907 states and 152905 transitions. [2021-06-06 00:02:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:02:49,945 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 [2021-06-06 00:02:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:50,033 INFO L225 Difference]: With dead ends: 41907 [2021-06-06 00:02:50,033 INFO L226 Difference]: Without dead ends: 41907 [2021-06-06 00:02:50,034 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 812.7ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:02:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41907 states. [2021-06-06 00:02:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41907 to 17837. [2021-06-06 00:02:50,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17837 states, 17836 states have (on average 3.912480376766091) internal successors, (69783), 17836 states have internal predecessors, (69783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17837 states to 17837 states and 69783 transitions. [2021-06-06 00:02:50,735 INFO L78 Accepts]: Start accepts. Automaton has 17837 states and 69783 transitions. Word has length 28 [2021-06-06 00:02:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:50,736 INFO L482 AbstractCegarLoop]: Abstraction has 17837 states and 69783 transitions. [2021-06-06 00:02:50,736 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) [2021-06-06 00:02:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 17837 states and 69783 transitions. [2021-06-06 00:02:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:50,759 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:50,759 INFO L554 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] [2021-06-06 00:02:50,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4030 [2021-06-06 00:02:50,959 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:50,960 INFO L82 PathProgramCache]: Analyzing trace with hash -648300864, now seen corresponding path program 116 times [2021-06-06 00:02:50,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:50,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878314108] [2021-06-06 00:02:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:50,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:50,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878314108] [2021-06-06 00:02:50,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878314108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:50,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799611413] [2021-06-06 00:02:50,998 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 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 [2021-06-06 00:02:51,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:02:51,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:51,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:51,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799611413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:51,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:51,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:02:51,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058703352] [2021-06-06 00:02:51,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:02:51,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:51,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:02:51,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:02:51,069 INFO L87 Difference]: Start difference. First operand 17837 states and 69783 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) [2021-06-06 00:02:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:51,328 INFO L93 Difference]: Finished difference Result 28682 states and 110964 transitions. [2021-06-06 00:02:51,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:02:51,329 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 [2021-06-06 00:02:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:51,389 INFO L225 Difference]: With dead ends: 28682 [2021-06-06 00:02:51,389 INFO L226 Difference]: Without dead ends: 28632 [2021-06-06 00:02:51,389 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:02:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28632 states. [2021-06-06 00:02:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28632 to 23563. [2021-06-06 00:02:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23563 states, 23562 states have (on average 3.9230965113318055) internal successors, (92436), 23562 states have internal predecessors, (92436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23563 states to 23563 states and 92436 transitions. [2021-06-06 00:02:51,820 INFO L78 Accepts]: Start accepts. Automaton has 23563 states and 92436 transitions. Word has length 28 [2021-06-06 00:02:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:51,820 INFO L482 AbstractCegarLoop]: Abstraction has 23563 states and 92436 transitions. [2021-06-06 00:02:51,820 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) [2021-06-06 00:02:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 23563 states and 92436 transitions. [2021-06-06 00:02:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:51,852 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:51,852 INFO L554 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] [2021-06-06 00:02:52,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4031 [2021-06-06 00:02:52,052 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:52,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1261765878, now seen corresponding path program 117 times [2021-06-06 00:02:52,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:52,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233880230] [2021-06-06 00:02:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:52,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:52,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233880230] [2021-06-06 00:02:52,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233880230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:52,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814856246] [2021-06-06 00:02:52,079 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 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 [2021-06-06 00:02:52,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:02:52,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:52,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:02:52,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:52,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814856246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:52,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:52,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:02:52,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143481672] [2021-06-06 00:02:52,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:02:52,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:52,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:02:52,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:02:52,153 INFO L87 Difference]: Start difference. First operand 23563 states and 92436 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) [2021-06-06 00:02:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:52,386 INFO L93 Difference]: Finished difference Result 26308 states and 100773 transitions. [2021-06-06 00:02:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:02:52,386 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 [2021-06-06 00:02:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:52,446 INFO L225 Difference]: With dead ends: 26308 [2021-06-06 00:02:52,446 INFO L226 Difference]: Without dead ends: 26308 [2021-06-06 00:02:52,447 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:02:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26308 states. [2021-06-06 00:02:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26308 to 23066. [2021-06-06 00:02:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23066 states, 23065 states have (on average 3.9134619553435943) internal successors, (90264), 23065 states have internal predecessors, (90264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23066 states to 23066 states and 90264 transitions. [2021-06-06 00:02:52,869 INFO L78 Accepts]: Start accepts. Automaton has 23066 states and 90264 transitions. Word has length 28 [2021-06-06 00:02:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:52,869 INFO L482 AbstractCegarLoop]: Abstraction has 23066 states and 90264 transitions. [2021-06-06 00:02:52,869 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) [2021-06-06 00:02:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 23066 states and 90264 transitions. [2021-06-06 00:02:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:52,900 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:52,900 INFO L554 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] [2021-06-06 00:02:53,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4032 [2021-06-06 00:02:53,101 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:53,101 INFO L82 PathProgramCache]: Analyzing trace with hash 310084440, now seen corresponding path program 118 times [2021-06-06 00:02:53,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:53,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920357463] [2021-06-06 00:02:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:53,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:53,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920357463] [2021-06-06 00:02:53,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920357463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:53,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173270751] [2021-06-06 00:02:53,135 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 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 [2021-06-06 00:02:53,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:02:53,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:53,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:53,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:53,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173270751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:53,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:53,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:02:53,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946353354] [2021-06-06 00:02:53,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:02:53,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:53,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:02:53,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:02:53,243 INFO L87 Difference]: Start difference. First operand 23066 states and 90264 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) [2021-06-06 00:02:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:54,095 INFO L93 Difference]: Finished difference Result 35513 states and 132496 transitions. [2021-06-06 00:02:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:02:54,096 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 [2021-06-06 00:02:54,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:54,169 INFO L225 Difference]: With dead ends: 35513 [2021-06-06 00:02:54,170 INFO L226 Difference]: Without dead ends: 35513 [2021-06-06 00:02:54,170 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 501.3ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:02:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35513 states. [2021-06-06 00:02:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35513 to 23134. [2021-06-06 00:02:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23134 states, 23133 states have (on average 3.9115981498292482) internal successors, (90487), 23133 states have internal predecessors, (90487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23134 states to 23134 states and 90487 transitions. [2021-06-06 00:02:54,692 INFO L78 Accepts]: Start accepts. Automaton has 23134 states and 90487 transitions. Word has length 28 [2021-06-06 00:02:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:54,692 INFO L482 AbstractCegarLoop]: Abstraction has 23134 states and 90487 transitions. [2021-06-06 00:02:54,692 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) [2021-06-06 00:02:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 23134 states and 90487 transitions. [2021-06-06 00:02:54,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:54,722 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:54,722 INFO L554 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] [2021-06-06 00:02:54,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4033 [2021-06-06 00:02:54,923 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:54,923 INFO L82 PathProgramCache]: Analyzing trace with hash -666234404, now seen corresponding path program 119 times [2021-06-06 00:02:54,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:54,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365227359] [2021-06-06 00:02:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:54,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:54,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365227359] [2021-06-06 00:02:54,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365227359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:54,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803278625] [2021-06-06 00:02:54,957 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 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 [2021-06-06 00:02:54,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:02:54,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:54,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:54,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:55,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803278625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:55,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:55,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:02:55,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884590544] [2021-06-06 00:02:55,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:55,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:55,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:55,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:55,066 INFO L87 Difference]: Start difference. First operand 23134 states and 90487 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) [2021-06-06 00:02:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:56,432 INFO L93 Difference]: Finished difference Result 45671 states and 168413 transitions. [2021-06-06 00:02:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:02:56,433 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 [2021-06-06 00:02:56,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:56,527 INFO L225 Difference]: With dead ends: 45671 [2021-06-06 00:02:56,528 INFO L226 Difference]: Without dead ends: 45671 [2021-06-06 00:02:56,528 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 786.0ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-06 00:02:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45671 states. [2021-06-06 00:02:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45671 to 23135. [2021-06-06 00:02:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23135 states, 23134 states have (on average 3.913460707184231) internal successors, (90534), 23134 states have internal predecessors, (90534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23135 states to 23135 states and 90534 transitions. [2021-06-06 00:02:57,249 INFO L78 Accepts]: Start accepts. Automaton has 23135 states and 90534 transitions. Word has length 28 [2021-06-06 00:02:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:57,249 INFO L482 AbstractCegarLoop]: Abstraction has 23135 states and 90534 transitions. [2021-06-06 00:02:57,249 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) [2021-06-06 00:02:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 23135 states and 90534 transitions. [2021-06-06 00:02:57,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:57,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:57,282 INFO L554 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] [2021-06-06 00:02:57,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4034,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:02:57,483 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash -99282324, now seen corresponding path program 120 times [2021-06-06 00:02:57,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:57,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992042649] [2021-06-06 00:02:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:02:57,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:57,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992042649] [2021-06-06 00:02:57,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992042649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:57,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670101173] [2021-06-06 00:02:57,523 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 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 [2021-06-06 00:02:57,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:02:57,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:02:57,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:02:57,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:57,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670101173] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:57,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:57,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:02:57,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825822355] [2021-06-06 00:02:57,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:02:57,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:57,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:02:57,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:02:57,633 INFO L87 Difference]: Start difference. First operand 23135 states and 90534 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) [2021-06-06 00:02:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:02:58,918 INFO L93 Difference]: Finished difference Result 45296 states and 167759 transitions. [2021-06-06 00:02:58,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:02:58,918 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 [2021-06-06 00:02:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:02:59,013 INFO L225 Difference]: With dead ends: 45296 [2021-06-06 00:02:59,013 INFO L226 Difference]: Without dead ends: 45296 [2021-06-06 00:02:59,014 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 774.5ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-06 00:02:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45296 states. [2021-06-06 00:02:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45296 to 22919. [2021-06-06 00:02:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22919 states, 22918 states have (on average 3.9066236146260582) internal successors, (89532), 22918 states have internal predecessors, (89532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:02:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22919 states to 22919 states and 89532 transitions. [2021-06-06 00:02:59,634 INFO L78 Accepts]: Start accepts. Automaton has 22919 states and 89532 transitions. Word has length 28 [2021-06-06 00:02:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:02:59,634 INFO L482 AbstractCegarLoop]: Abstraction has 22919 states and 89532 transitions. [2021-06-06 00:02:59,634 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) [2021-06-06 00:02:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 22919 states and 89532 transitions. [2021-06-06 00:02:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:02:59,665 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:02:59,665 INFO L554 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] [2021-06-06 00:02:59,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4035 [2021-06-06 00:02:59,873 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:02:59,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:02:59,873 INFO L82 PathProgramCache]: Analyzing trace with hash 836856348, now seen corresponding path program 121 times [2021-06-06 00:02:59,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:02:59,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357087162] [2021-06-06 00:02:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:02:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:02:59,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:02:59,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357087162] [2021-06-06 00:02:59,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357087162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:59,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464931953] [2021-06-06 00:02:59,899 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 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 [2021-06-06 00:02:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:02:59,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:02:59,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:02:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:02:59,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464931953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:02:59,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:02:59,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:02:59,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546659036] [2021-06-06 00:02:59,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:02:59,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:02:59,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:02:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:02:59,973 INFO L87 Difference]: Start difference. First operand 22919 states and 89532 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) [2021-06-06 00:03:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:00,335 INFO L93 Difference]: Finished difference Result 35247 states and 132459 transitions. [2021-06-06 00:03:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:03:00,335 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 [2021-06-06 00:03:00,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:00,403 INFO L225 Difference]: With dead ends: 35247 [2021-06-06 00:03:00,403 INFO L226 Difference]: Without dead ends: 35230 [2021-06-06 00:03:00,403 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:03:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35230 states. [2021-06-06 00:03:00,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35230 to 23187. [2021-06-06 00:03:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23187 states, 23186 states have (on average 3.9111532821530233) internal successors, (90684), 23186 states have internal predecessors, (90684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23187 states to 23187 states and 90684 transitions. [2021-06-06 00:03:00,863 INFO L78 Accepts]: Start accepts. Automaton has 23187 states and 90684 transitions. Word has length 28 [2021-06-06 00:03:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:00,863 INFO L482 AbstractCegarLoop]: Abstraction has 23187 states and 90684 transitions. [2021-06-06 00:03:00,863 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) [2021-06-06 00:03:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23187 states and 90684 transitions. [2021-06-06 00:03:00,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:00,892 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:00,892 INFO L554 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] [2021-06-06 00:03:01,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4036,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:01,093 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:01,093 INFO L82 PathProgramCache]: Analyzing trace with hash -306069692, now seen corresponding path program 122 times [2021-06-06 00:03:01,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:01,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167402668] [2021-06-06 00:03:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:01,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:01,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167402668] [2021-06-06 00:03:01,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167402668] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:01,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641466769] [2021-06-06 00:03:01,119 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 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 [2021-06-06 00:03:01,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:01,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:01,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:03:01,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:03:01,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641466769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:01,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:01,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:03:01,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940002590] [2021-06-06 00:03:01,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:03:01,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:01,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:03:01,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:03:01,196 INFO L87 Difference]: Start difference. First operand 23187 states and 90684 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) [2021-06-06 00:03:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:01,462 INFO L93 Difference]: Finished difference Result 37405 states and 139306 transitions. [2021-06-06 00:03:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:03:01,463 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 [2021-06-06 00:03:01,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:01,541 INFO L225 Difference]: With dead ends: 37405 [2021-06-06 00:03:01,541 INFO L226 Difference]: Without dead ends: 37405 [2021-06-06 00:03:01,541 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:03:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37405 states. [2021-06-06 00:03:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37405 to 22856. [2021-06-06 00:03:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22856 states, 22855 states have (on average 3.898402975278932) internal successors, (89098), 22855 states have internal predecessors, (89098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22856 states to 22856 states and 89098 transitions. [2021-06-06 00:03:02,048 INFO L78 Accepts]: Start accepts. Automaton has 22856 states and 89098 transitions. Word has length 28 [2021-06-06 00:03:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:02,048 INFO L482 AbstractCegarLoop]: Abstraction has 22856 states and 89098 transitions. [2021-06-06 00:03:02,048 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) [2021-06-06 00:03:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 22856 states and 89098 transitions. [2021-06-06 00:03:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:02,078 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:02,078 INFO L554 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] [2021-06-06 00:03:02,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4037,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:02,285 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:02,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1652751258, now seen corresponding path program 123 times [2021-06-06 00:03:02,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:02,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646209138] [2021-06-06 00:03:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:02,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:02,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646209138] [2021-06-06 00:03:02,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646209138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:02,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378200972] [2021-06-06 00:03:02,318 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 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 [2021-06-06 00:03:02,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:03:02,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:02,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:02,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:02,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378200972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:02,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:02,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:03:02,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955280619] [2021-06-06 00:03:02,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:03:02,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:03:02,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:03:02,410 INFO L87 Difference]: Start difference. First operand 22856 states and 89098 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) [2021-06-06 00:03:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:03,127 INFO L93 Difference]: Finished difference Result 32629 states and 122440 transitions. [2021-06-06 00:03:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:03:03,127 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 [2021-06-06 00:03:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:03,303 INFO L225 Difference]: With dead ends: 32629 [2021-06-06 00:03:03,303 INFO L226 Difference]: Without dead ends: 32629 [2021-06-06 00:03:03,303 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 363.8ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:03:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32629 states. [2021-06-06 00:03:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32629 to 22904. [2021-06-06 00:03:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22904 states, 22903 states have (on average 3.8973060297777584) internal successors, (89260), 22903 states have internal predecessors, (89260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22904 states to 22904 states and 89260 transitions. [2021-06-06 00:03:03,904 INFO L78 Accepts]: Start accepts. Automaton has 22904 states and 89260 transitions. Word has length 28 [2021-06-06 00:03:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:03,904 INFO L482 AbstractCegarLoop]: Abstraction has 22904 states and 89260 transitions. [2021-06-06 00:03:03,905 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) [2021-06-06 00:03:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 22904 states and 89260 transitions. [2021-06-06 00:03:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:03,938 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:03,939 INFO L554 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] [2021-06-06 00:03:04,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4038,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:04,139 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash -867837164, now seen corresponding path program 124 times [2021-06-06 00:03:04,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:04,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556864903] [2021-06-06 00:03:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:04,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:04,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556864903] [2021-06-06 00:03:04,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556864903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:04,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381588666] [2021-06-06 00:03:04,176 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 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 [2021-06-06 00:03:04,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:04,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:04,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:04,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:04,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381588666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:04,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:04,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:03:04,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744754347] [2021-06-06 00:03:04,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:03:04,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:03:04,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:03:04,275 INFO L87 Difference]: Start difference. First operand 22904 states and 89260 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) [2021-06-06 00:03:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:05,196 INFO L93 Difference]: Finished difference Result 34174 states and 126879 transitions. [2021-06-06 00:03:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:03:05,196 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 [2021-06-06 00:03:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:05,266 INFO L225 Difference]: With dead ends: 34174 [2021-06-06 00:03:05,266 INFO L226 Difference]: Without dead ends: 34174 [2021-06-06 00:03:05,267 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 510.0ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:03:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34174 states. [2021-06-06 00:03:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34174 to 23462. [2021-06-06 00:03:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23462 states, 23461 states have (on average 3.8782234346362046) internal successors, (90987), 23461 states have internal predecessors, (90987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23462 states to 23462 states and 90987 transitions. [2021-06-06 00:03:05,804 INFO L78 Accepts]: Start accepts. Automaton has 23462 states and 90987 transitions. Word has length 28 [2021-06-06 00:03:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:05,804 INFO L482 AbstractCegarLoop]: Abstraction has 23462 states and 90987 transitions. [2021-06-06 00:03:05,804 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) [2021-06-06 00:03:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 23462 states and 90987 transitions. [2021-06-06 00:03:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:05,836 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:05,836 INFO L554 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] [2021-06-06 00:03:06,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4039,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:06,036 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:06,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:06,037 INFO L82 PathProgramCache]: Analyzing trace with hash -912658306, now seen corresponding path program 125 times [2021-06-06 00:03:06,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:06,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256526547] [2021-06-06 00:03:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:06,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:06,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256526547] [2021-06-06 00:03:06,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256526547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:06,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189874027] [2021-06-06 00:03:06,070 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 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 [2021-06-06 00:03:06,094 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:03:06,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:06,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:06,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:06,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189874027] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:06,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:06,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:03:06,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747883200] [2021-06-06 00:03:06,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:03:06,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:06,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:03:06,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:03:06,159 INFO L87 Difference]: Start difference. First operand 23462 states and 90987 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) [2021-06-06 00:03:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:06,947 INFO L93 Difference]: Finished difference Result 33276 states and 124519 transitions. [2021-06-06 00:03:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:03:06,947 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 [2021-06-06 00:03:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:07,017 INFO L225 Difference]: With dead ends: 33276 [2021-06-06 00:03:07,017 INFO L226 Difference]: Without dead ends: 33272 [2021-06-06 00:03:07,017 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 406.2ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:03:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33272 states. [2021-06-06 00:03:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33272 to 23354. [2021-06-06 00:03:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23354 states, 23353 states have (on average 3.880657731340727) internal successors, (90625), 23353 states have internal predecessors, (90625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23354 states to 23354 states and 90625 transitions. [2021-06-06 00:03:07,614 INFO L78 Accepts]: Start accepts. Automaton has 23354 states and 90625 transitions. Word has length 28 [2021-06-06 00:03:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:07,614 INFO L482 AbstractCegarLoop]: Abstraction has 23354 states and 90625 transitions. [2021-06-06 00:03:07,614 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) [2021-06-06 00:03:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 23354 states and 90625 transitions. [2021-06-06 00:03:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:07,644 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:07,644 INFO L554 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] [2021-06-06 00:03:07,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4040,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:07,845 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash -47274368, now seen corresponding path program 126 times [2021-06-06 00:03:07,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:07,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269647758] [2021-06-06 00:03:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:07,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:07,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269647758] [2021-06-06 00:03:07,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269647758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:07,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951203151] [2021-06-06 00:03:07,871 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 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 [2021-06-06 00:03:07,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:03:07,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:07,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:03:07,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 00:03:07,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951203151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:07,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:07,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:03:07,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718282403] [2021-06-06 00:03:07,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:03:07,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:03:07,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:03:07,952 INFO L87 Difference]: Start difference. First operand 23354 states and 90625 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) [2021-06-06 00:03:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:08,192 INFO L93 Difference]: Finished difference Result 29681 states and 111114 transitions. [2021-06-06 00:03:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:03:08,192 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 [2021-06-06 00:03:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:08,252 INFO L225 Difference]: With dead ends: 29681 [2021-06-06 00:03:08,252 INFO L226 Difference]: Without dead ends: 29681 [2021-06-06 00:03:08,252 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:03:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29681 states. [2021-06-06 00:03:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29681 to 23664. [2021-06-06 00:03:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23664 states, 23663 states have (on average 3.872628153657609) internal successors, (91638), 23663 states have internal predecessors, (91638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23664 states to 23664 states and 91638 transitions. [2021-06-06 00:03:08,674 INFO L78 Accepts]: Start accepts. Automaton has 23664 states and 91638 transitions. Word has length 28 [2021-06-06 00:03:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:08,674 INFO L482 AbstractCegarLoop]: Abstraction has 23664 states and 91638 transitions. [2021-06-06 00:03:08,674 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) [2021-06-06 00:03:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 23664 states and 91638 transitions. [2021-06-06 00:03:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:08,704 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:08,704 INFO L554 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] [2021-06-06 00:03:08,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4041 [2021-06-06 00:03:08,905 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 882925376, now seen corresponding path program 127 times [2021-06-06 00:03:08,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:08,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890390708] [2021-06-06 00:03:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:08,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:08,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890390708] [2021-06-06 00:03:08,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890390708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:08,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341551039] [2021-06-06 00:03:08,938 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 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 [2021-06-06 00:03:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:08,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:08,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:03:09,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341551039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:09,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:09,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:03:09,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779281385] [2021-06-06 00:03:09,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:03:09,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:09,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:03:09,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:03:09,019 INFO L87 Difference]: Start difference. First operand 23664 states and 91638 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) [2021-06-06 00:03:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:09,774 INFO L93 Difference]: Finished difference Result 34438 states and 127402 transitions. [2021-06-06 00:03:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:03:09,775 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 [2021-06-06 00:03:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:09,845 INFO L225 Difference]: With dead ends: 34438 [2021-06-06 00:03:09,845 INFO L226 Difference]: Without dead ends: 34438 [2021-06-06 00:03:09,845 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 394.6ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:03:09,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34438 states. [2021-06-06 00:03:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34438 to 25439. [2021-06-06 00:03:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25439 states, 25438 states have (on average 3.8818696438399245) internal successors, (98747), 25438 states have internal predecessors, (98747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25439 states to 25439 states and 98747 transitions. [2021-06-06 00:03:10,395 INFO L78 Accepts]: Start accepts. Automaton has 25439 states and 98747 transitions. Word has length 28 [2021-06-06 00:03:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:10,395 INFO L482 AbstractCegarLoop]: Abstraction has 25439 states and 98747 transitions. [2021-06-06 00:03:10,395 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) [2021-06-06 00:03:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 25439 states and 98747 transitions. [2021-06-06 00:03:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:10,428 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:10,428 INFO L554 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] [2021-06-06 00:03:10,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4042 [2021-06-06 00:03:10,628 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:10,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:10,629 INFO L82 PathProgramCache]: Analyzing trace with hash -956846952, now seen corresponding path program 128 times [2021-06-06 00:03:10,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:10,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596393671] [2021-06-06 00:03:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:10,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:10,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596393671] [2021-06-06 00:03:10,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596393671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:10,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780106711] [2021-06-06 00:03:10,662 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 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 [2021-06-06 00:03:10,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:10,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:10,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:10,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:03:10,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780106711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:10,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:10,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:03:10,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890474862] [2021-06-06 00:03:10,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:03:10,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:10,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:03:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:03:10,872 INFO L87 Difference]: Start difference. First operand 25439 states and 98747 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) [2021-06-06 00:03:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:11,493 INFO L93 Difference]: Finished difference Result 32691 states and 122893 transitions. [2021-06-06 00:03:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:03:11,494 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 [2021-06-06 00:03:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:11,560 INFO L225 Difference]: With dead ends: 32691 [2021-06-06 00:03:11,560 INFO L226 Difference]: Without dead ends: 32679 [2021-06-06 00:03:11,561 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 319.3ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:03:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32679 states. [2021-06-06 00:03:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32679 to 25599. [2021-06-06 00:03:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25599 states, 25598 states have (on average 3.8770607078678023) internal successors, (99245), 25598 states have internal predecessors, (99245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25599 states to 25599 states and 99245 transitions. [2021-06-06 00:03:12,103 INFO L78 Accepts]: Start accepts. Automaton has 25599 states and 99245 transitions. Word has length 28 [2021-06-06 00:03:12,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:12,103 INFO L482 AbstractCegarLoop]: Abstraction has 25599 states and 99245 transitions. [2021-06-06 00:03:12,103 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) [2021-06-06 00:03:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 25599 states and 99245 transitions. [2021-06-06 00:03:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:12,136 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:12,136 INFO L554 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] [2021-06-06 00:03:12,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4043 [2021-06-06 00:03:12,336 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1587630268, now seen corresponding path program 129 times [2021-06-06 00:03:12,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:12,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723094002] [2021-06-06 00:03:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:12,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:12,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723094002] [2021-06-06 00:03:12,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723094002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:12,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626995165] [2021-06-06 00:03:12,363 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 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 [2021-06-06 00:03:12,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:03:12,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:12,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:03:12,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:12,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626995165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:12,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:12,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:03:12,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756321614] [2021-06-06 00:03:12,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:03:12,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:12,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:03:12,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:03:12,433 INFO L87 Difference]: Start difference. First operand 25599 states and 99245 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) [2021-06-06 00:03:12,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:12,664 INFO L93 Difference]: Finished difference Result 30159 states and 114821 transitions. [2021-06-06 00:03:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 00:03:12,665 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 [2021-06-06 00:03:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:12,726 INFO L225 Difference]: With dead ends: 30159 [2021-06-06 00:03:12,726 INFO L226 Difference]: Without dead ends: 30159 [2021-06-06 00:03:12,726 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:03:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30159 states. [2021-06-06 00:03:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30159 to 26806. [2021-06-06 00:03:13,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26806 states, 26805 states have (on average 3.8731952993844434) internal successors, (103821), 26805 states have internal predecessors, (103821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26806 states to 26806 states and 103821 transitions. [2021-06-06 00:03:13,201 INFO L78 Accepts]: Start accepts. Automaton has 26806 states and 103821 transitions. Word has length 28 [2021-06-06 00:03:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:13,201 INFO L482 AbstractCegarLoop]: Abstraction has 26806 states and 103821 transitions. [2021-06-06 00:03:13,201 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) [2021-06-06 00:03:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 26806 states and 103821 transitions. [2021-06-06 00:03:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:13,240 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:13,240 INFO L554 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] [2021-06-06 00:03:13,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4044 [2021-06-06 00:03:13,440 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:13,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1143968700, now seen corresponding path program 130 times [2021-06-06 00:03:13,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:13,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637084987] [2021-06-06 00:03:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:13,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:13,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637084987] [2021-06-06 00:03:13,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637084987] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:13,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755670971] [2021-06-06 00:03:13,476 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 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 [2021-06-06 00:03:13,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:13,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:13,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:13,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:13,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755670971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:13,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:13,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:03:13,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474119282] [2021-06-06 00:03:13,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:03:13,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:13,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:03:13,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:03:13,558 INFO L87 Difference]: Start difference. First operand 26806 states and 103821 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) [2021-06-06 00:03:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:14,242 INFO L93 Difference]: Finished difference Result 34754 states and 129602 transitions. [2021-06-06 00:03:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:03:14,242 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 [2021-06-06 00:03:14,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:14,329 INFO L225 Difference]: With dead ends: 34754 [2021-06-06 00:03:14,329 INFO L226 Difference]: Without dead ends: 34754 [2021-06-06 00:03:14,329 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 372.4ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:03:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34754 states. [2021-06-06 00:03:14,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34754 to 28000. [2021-06-06 00:03:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28000 states, 27999 states have (on average 3.8443515839851425) internal successors, (107638), 27999 states have internal predecessors, (107638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28000 states to 28000 states and 107638 transitions. [2021-06-06 00:03:14,981 INFO L78 Accepts]: Start accepts. Automaton has 28000 states and 107638 transitions. Word has length 28 [2021-06-06 00:03:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:14,981 INFO L482 AbstractCegarLoop]: Abstraction has 28000 states and 107638 transitions. [2021-06-06 00:03:14,982 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) [2021-06-06 00:03:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 28000 states and 107638 transitions. [2021-06-06 00:03:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:15,023 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:15,023 INFO L554 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] [2021-06-06 00:03:15,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4045 [2021-06-06 00:03:15,224 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash -403875748, now seen corresponding path program 131 times [2021-06-06 00:03:15,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:15,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648351962] [2021-06-06 00:03:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:15,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:15,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648351962] [2021-06-06 00:03:15,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648351962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:15,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473341175] [2021-06-06 00:03:15,263 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 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 [2021-06-06 00:03:15,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:03:15,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:15,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:15,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:15,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473341175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:15,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:15,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:03:15,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939333290] [2021-06-06 00:03:15,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:03:15,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:15,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:03:15,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:03:15,337 INFO L87 Difference]: Start difference. First operand 28000 states and 107638 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) [2021-06-06 00:03:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:15,874 INFO L93 Difference]: Finished difference Result 33849 states and 127203 transitions. [2021-06-06 00:03:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:03:15,875 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 [2021-06-06 00:03:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:15,944 INFO L225 Difference]: With dead ends: 33849 [2021-06-06 00:03:15,945 INFO L226 Difference]: Without dead ends: 33841 [2021-06-06 00:03:15,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 259.9ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:03:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33841 states. [2021-06-06 00:03:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33841 to 27806. [2021-06-06 00:03:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27806 states, 27805 states have (on average 3.8502787268476895) internal successors, (107057), 27805 states have internal predecessors, (107057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27806 states to 27806 states and 107057 transitions. [2021-06-06 00:03:16,510 INFO L78 Accepts]: Start accepts. Automaton has 27806 states and 107057 transitions. Word has length 28 [2021-06-06 00:03:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:16,510 INFO L482 AbstractCegarLoop]: Abstraction has 27806 states and 107057 transitions. [2021-06-06 00:03:16,510 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) [2021-06-06 00:03:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 27806 states and 107057 transitions. [2021-06-06 00:03:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:16,550 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:16,550 INFO L554 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] [2021-06-06 00:03:16,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4046 [2021-06-06 00:03:16,750 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:16,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1046121180, now seen corresponding path program 132 times [2021-06-06 00:03:16,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:16,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412771472] [2021-06-06 00:03:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:16,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:16,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412771472] [2021-06-06 00:03:16,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412771472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:16,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402088583] [2021-06-06 00:03:16,780 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 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 [2021-06-06 00:03:16,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:03:16,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:16,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:16,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:16,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402088583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:16,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:16,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:03:16,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971043176] [2021-06-06 00:03:16,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:03:16,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:16,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:03:16,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:03:16,859 INFO L87 Difference]: Start difference. First operand 27806 states and 107057 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) [2021-06-06 00:03:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:17,546 INFO L93 Difference]: Finished difference Result 35673 states and 132779 transitions. [2021-06-06 00:03:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:03:17,546 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 [2021-06-06 00:03:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:17,619 INFO L225 Difference]: With dead ends: 35673 [2021-06-06 00:03:17,619 INFO L226 Difference]: Without dead ends: 35673 [2021-06-06 00:03:17,620 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 347.9ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:03:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35673 states. [2021-06-06 00:03:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35673 to 28844. [2021-06-06 00:03:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28844 states, 28843 states have (on average 3.827618486287834) internal successors, (110400), 28843 states have internal predecessors, (110400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28844 states to 28844 states and 110400 transitions. [2021-06-06 00:03:18,409 INFO L78 Accepts]: Start accepts. Automaton has 28844 states and 110400 transitions. Word has length 28 [2021-06-06 00:03:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:18,409 INFO L482 AbstractCegarLoop]: Abstraction has 28844 states and 110400 transitions. [2021-06-06 00:03:18,409 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) [2021-06-06 00:03:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 28844 states and 110400 transitions. [2021-06-06 00:03:18,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:18,458 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:18,458 INFO L554 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] [2021-06-06 00:03:18,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4047,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:18,658 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash -36901476, now seen corresponding path program 133 times [2021-06-06 00:03:18,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:18,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75038417] [2021-06-06 00:03:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:18,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:18,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75038417] [2021-06-06 00:03:18,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75038417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:18,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685679394] [2021-06-06 00:03:18,692 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 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 [2021-06-06 00:03:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:18,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:03:18,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:18,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685679394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:18,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:18,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:03:18,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520441680] [2021-06-06 00:03:18,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:03:18,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:18,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:03:18,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:03:18,784 INFO L87 Difference]: Start difference. First operand 28844 states and 110400 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) [2021-06-06 00:03:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:19,200 INFO L93 Difference]: Finished difference Result 35179 states and 133683 transitions. [2021-06-06 00:03:19,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:03:19,201 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 [2021-06-06 00:03:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:19,277 INFO L225 Difference]: With dead ends: 35179 [2021-06-06 00:03:19,277 INFO L226 Difference]: Without dead ends: 35166 [2021-06-06 00:03:19,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 129.6ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:03:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35166 states. [2021-06-06 00:03:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35166 to 33639. [2021-06-06 00:03:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33639 states, 33638 states have (on average 3.8427968369106367) internal successors, (129264), 33638 states have internal predecessors, (129264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33639 states to 33639 states and 129264 transitions. [2021-06-06 00:03:19,901 INFO L78 Accepts]: Start accepts. Automaton has 33639 states and 129264 transitions. Word has length 28 [2021-06-06 00:03:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:19,902 INFO L482 AbstractCegarLoop]: Abstraction has 33639 states and 129264 transitions. [2021-06-06 00:03:19,902 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) [2021-06-06 00:03:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 33639 states and 129264 transitions. [2021-06-06 00:03:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:19,948 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:19,948 INFO L554 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] [2021-06-06 00:03:20,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4048,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:20,148 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:20,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:20,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1434176642, now seen corresponding path program 134 times [2021-06-06 00:03:20,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:20,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162587635] [2021-06-06 00:03:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:20,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:20,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162587635] [2021-06-06 00:03:20,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162587635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:20,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673111133] [2021-06-06 00:03:20,179 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 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 [2021-06-06 00:03:20,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:20,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:20,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:03:20,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:20,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673111133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:20,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:20,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:03:20,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268313706] [2021-06-06 00:03:20,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:03:20,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:20,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:03:20,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:03:20,249 INFO L87 Difference]: Start difference. First operand 33639 states and 129264 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) [2021-06-06 00:03:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:20,590 INFO L93 Difference]: Finished difference Result 36796 states and 139166 transitions. [2021-06-06 00:03:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:03:20,590 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 [2021-06-06 00:03:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:20,668 INFO L225 Difference]: With dead ends: 36796 [2021-06-06 00:03:20,668 INFO L226 Difference]: Without dead ends: 36796 [2021-06-06 00:03:20,669 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:03:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36796 states. [2021-06-06 00:03:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36796 to 33316. [2021-06-06 00:03:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33316 states, 33315 states have (on average 3.839021461803992) internal successors, (127897), 33315 states have internal predecessors, (127897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33316 states to 33316 states and 127897 transitions. [2021-06-06 00:03:21,294 INFO L78 Accepts]: Start accepts. Automaton has 33316 states and 127897 transitions. Word has length 28 [2021-06-06 00:03:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:21,295 INFO L482 AbstractCegarLoop]: Abstraction has 33316 states and 127897 transitions. [2021-06-06 00:03:21,295 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) [2021-06-06 00:03:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 33316 states and 127897 transitions. [2021-06-06 00:03:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:21,341 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:21,341 INFO L554 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] [2021-06-06 00:03:21,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4049,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:21,541 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1001300038, now seen corresponding path program 135 times [2021-06-06 00:03:21,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:21,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670605546] [2021-06-06 00:03:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:21,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:21,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670605546] [2021-06-06 00:03:21,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670605546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:21,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84846853] [2021-06-06 00:03:21,570 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 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 [2021-06-06 00:03:21,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:03:21,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:21,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:21,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:21,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84846853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:21,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:21,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:03:21,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158975081] [2021-06-06 00:03:21,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:03:21,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:03:21,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:03:21,645 INFO L87 Difference]: Start difference. First operand 33316 states and 127897 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) [2021-06-06 00:03:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:22,294 INFO L93 Difference]: Finished difference Result 39856 states and 149676 transitions. [2021-06-06 00:03:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:03:22,295 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 [2021-06-06 00:03:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:22,383 INFO L225 Difference]: With dead ends: 39856 [2021-06-06 00:03:22,383 INFO L226 Difference]: Without dead ends: 39848 [2021-06-06 00:03:22,383 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 243.3ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:03:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39848 states. [2021-06-06 00:03:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39848 to 33282. [2021-06-06 00:03:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33282 states, 33281 states have (on average 3.839427901805835) internal successors, (127780), 33281 states have internal predecessors, (127780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33282 states to 33282 states and 127780 transitions. [2021-06-06 00:03:23,068 INFO L78 Accepts]: Start accepts. Automaton has 33282 states and 127780 transitions. Word has length 28 [2021-06-06 00:03:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:23,068 INFO L482 AbstractCegarLoop]: Abstraction has 33282 states and 127780 transitions. [2021-06-06 00:03:23,068 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) [2021-06-06 00:03:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 33282 states and 127780 transitions. [2021-06-06 00:03:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:23,114 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:23,114 INFO L554 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] [2021-06-06 00:03:23,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4050,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:23,315 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:23,315 INFO L82 PathProgramCache]: Analyzing trace with hash 105479222, now seen corresponding path program 136 times [2021-06-06 00:03:23,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:23,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354771516] [2021-06-06 00:03:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:23,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:23,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354771516] [2021-06-06 00:03:23,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354771516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:23,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825151074] [2021-06-06 00:03:23,345 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 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 [2021-06-06 00:03:23,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:23,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:23,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:03:23,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:23,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825151074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:23,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:23,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:03:23,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305479984] [2021-06-06 00:03:23,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:03:23,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:23,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:03:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:03:23,414 INFO L87 Difference]: Start difference. First operand 33282 states and 127780 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) [2021-06-06 00:03:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:23,788 INFO L93 Difference]: Finished difference Result 36198 states and 137505 transitions. [2021-06-06 00:03:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:03:23,788 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 [2021-06-06 00:03:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:23,863 INFO L225 Difference]: With dead ends: 36198 [2021-06-06 00:03:23,863 INFO L226 Difference]: Without dead ends: 36198 [2021-06-06 00:03:23,863 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 165.2ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:03:23,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36198 states. [2021-06-06 00:03:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36198 to 33814. [2021-06-06 00:03:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33814 states, 33813 states have (on average 3.837695560878952) internal successors, (129764), 33813 states have internal predecessors, (129764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33814 states to 33814 states and 129764 transitions. [2021-06-06 00:03:24,491 INFO L78 Accepts]: Start accepts. Automaton has 33814 states and 129764 transitions. Word has length 28 [2021-06-06 00:03:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:24,491 INFO L482 AbstractCegarLoop]: Abstraction has 33814 states and 129764 transitions. [2021-06-06 00:03:24,491 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) [2021-06-06 00:03:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 33814 states and 129764 transitions. [2021-06-06 00:03:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:24,538 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:24,538 INFO L554 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] [2021-06-06 00:03:24,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4051 [2021-06-06 00:03:24,738 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1598636696, now seen corresponding path program 137 times [2021-06-06 00:03:24,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:24,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555901044] [2021-06-06 00:03:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:24,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:24,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555901044] [2021-06-06 00:03:24,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555901044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:24,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627558445] [2021-06-06 00:03:24,768 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 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 [2021-06-06 00:03:24,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:03:24,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:24,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:24,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:24,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627558445] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:24,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:24,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:03:24,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486339683] [2021-06-06 00:03:24,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:03:24,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:03:24,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:03:24,843 INFO L87 Difference]: Start difference. First operand 33814 states and 129764 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) [2021-06-06 00:03:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:25,389 INFO L93 Difference]: Finished difference Result 40833 states and 153241 transitions. [2021-06-06 00:03:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:03:25,389 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 [2021-06-06 00:03:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:25,476 INFO L225 Difference]: With dead ends: 40833 [2021-06-06 00:03:25,476 INFO L226 Difference]: Without dead ends: 40809 [2021-06-06 00:03:25,476 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 245.1ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:03:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40809 states. [2021-06-06 00:03:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40809 to 33986. [2021-06-06 00:03:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33986 states, 33985 states have (on average 3.8339855818743565) internal successors, (130298), 33985 states have internal predecessors, (130298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33986 states to 33986 states and 130298 transitions. [2021-06-06 00:03:26,278 INFO L78 Accepts]: Start accepts. Automaton has 33986 states and 130298 transitions. Word has length 28 [2021-06-06 00:03:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:26,279 INFO L482 AbstractCegarLoop]: Abstraction has 33986 states and 130298 transitions. [2021-06-06 00:03:26,279 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) [2021-06-06 00:03:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 33986 states and 130298 transitions. [2021-06-06 00:03:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:26,326 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:26,326 INFO L554 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] [2021-06-06 00:03:26,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4052 [2021-06-06 00:03:26,526 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash -252372998, now seen corresponding path program 138 times [2021-06-06 00:03:26,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:26,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645996650] [2021-06-06 00:03:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:26,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:26,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645996650] [2021-06-06 00:03:26,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645996650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:26,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691938418] [2021-06-06 00:03:26,562 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 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 [2021-06-06 00:03:26,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:03:26,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:03:26,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:26,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691938418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:26,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:26,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-06 00:03:26,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501364638] [2021-06-06 00:03:26,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:03:26,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:26,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:03:26,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:03:26,634 INFO L87 Difference]: Start difference. First operand 33986 states and 130298 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) [2021-06-06 00:03:27,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:27,078 INFO L93 Difference]: Finished difference Result 36618 states and 138998 transitions. [2021-06-06 00:03:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:03:27,078 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 [2021-06-06 00:03:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:27,156 INFO L225 Difference]: With dead ends: 36618 [2021-06-06 00:03:27,156 INFO L226 Difference]: Without dead ends: 36618 [2021-06-06 00:03:27,157 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 196.6ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:03:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36618 states. [2021-06-06 00:03:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36618 to 33912. [2021-06-06 00:03:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33912 states, 33911 states have (on average 3.8348028663265605) internal successors, (130042), 33911 states have internal predecessors, (130042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33912 states to 33912 states and 130042 transitions. [2021-06-06 00:03:27,991 INFO L78 Accepts]: Start accepts. Automaton has 33912 states and 130042 transitions. Word has length 28 [2021-06-06 00:03:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:27,991 INFO L482 AbstractCegarLoop]: Abstraction has 33912 states and 130042 transitions. [2021-06-06 00:03:27,991 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) [2021-06-06 00:03:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 33912 states and 130042 transitions. [2021-06-06 00:03:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:28,037 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:28,038 INFO L554 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] [2021-06-06 00:03:28,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4053,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:28,238 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:28,238 INFO L82 PathProgramCache]: Analyzing trace with hash 606143132, now seen corresponding path program 139 times [2021-06-06 00:03:28,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:28,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542056673] [2021-06-06 00:03:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:28,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:28,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542056673] [2021-06-06 00:03:28,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542056673] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:28,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221332613] [2021-06-06 00:03:28,487 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 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 [2021-06-06 00:03:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:28,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:28,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:28,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221332613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:28,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:28,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:03:28,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286026076] [2021-06-06 00:03:28,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:03:28,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:28,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:03:28,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:03:28,561 INFO L87 Difference]: Start difference. First operand 33912 states and 130042 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) [2021-06-06 00:03:29,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:29,239 INFO L93 Difference]: Finished difference Result 40756 states and 152982 transitions. [2021-06-06 00:03:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:03:29,240 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 [2021-06-06 00:03:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:29,334 INFO L225 Difference]: With dead ends: 40756 [2021-06-06 00:03:29,334 INFO L226 Difference]: Without dead ends: 40716 [2021-06-06 00:03:29,334 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 303.1ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:03:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40716 states. [2021-06-06 00:03:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40716 to 34086. [2021-06-06 00:03:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34086 states, 34085 states have (on average 3.8309813701041513) internal successors, (130579), 34085 states have internal predecessors, (130579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34086 states to 34086 states and 130579 transitions. [2021-06-06 00:03:30,111 INFO L78 Accepts]: Start accepts. Automaton has 34086 states and 130579 transitions. Word has length 28 [2021-06-06 00:03:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:30,111 INFO L482 AbstractCegarLoop]: Abstraction has 34086 states and 130579 transitions. [2021-06-06 00:03:30,112 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) [2021-06-06 00:03:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 34086 states and 130579 transitions. [2021-06-06 00:03:30,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:30,158 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:30,158 INFO L554 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] [2021-06-06 00:03:30,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4054 [2021-06-06 00:03:30,358 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:30,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:30,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1649950116, now seen corresponding path program 140 times [2021-06-06 00:03:30,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:30,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469097047] [2021-06-06 00:03:30,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:30,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:30,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469097047] [2021-06-06 00:03:30,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469097047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:30,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498575842] [2021-06-06 00:03:30,388 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 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 [2021-06-06 00:03:30,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:30,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:30,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:30,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:30,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498575842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:30,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:30,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:03:30,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327984153] [2021-06-06 00:03:30,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:03:30,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:30,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:03:30,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:03:30,621 INFO L87 Difference]: Start difference. First operand 34086 states and 130579 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) [2021-06-06 00:03:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:31,938 INFO L93 Difference]: Finished difference Result 76027 states and 281494 transitions. [2021-06-06 00:03:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:03:31,939 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 [2021-06-06 00:03:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:32,138 INFO L225 Difference]: With dead ends: 76027 [2021-06-06 00:03:32,138 INFO L226 Difference]: Without dead ends: 76027 [2021-06-06 00:03:32,138 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 751.5ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:03:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76027 states. [2021-06-06 00:03:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76027 to 43183. [2021-06-06 00:03:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43183 states, 43182 states have (on average 3.906581445972859) internal successors, (168694), 43182 states have internal predecessors, (168694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43183 states to 43183 states and 168694 transitions. [2021-06-06 00:03:33,517 INFO L78 Accepts]: Start accepts. Automaton has 43183 states and 168694 transitions. Word has length 28 [2021-06-06 00:03:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:33,517 INFO L482 AbstractCegarLoop]: Abstraction has 43183 states and 168694 transitions. [2021-06-06 00:03:33,517 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) [2021-06-06 00:03:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 43183 states and 168694 transitions. [2021-06-06 00:03:33,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:33,735 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:33,735 INFO L554 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] [2021-06-06 00:03:33,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4055 [2021-06-06 00:03:33,951 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:33,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1082998036, now seen corresponding path program 141 times [2021-06-06 00:03:33,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:33,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131688444] [2021-06-06 00:03:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:33,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:33,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131688444] [2021-06-06 00:03:33,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131688444] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:33,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494724332] [2021-06-06 00:03:33,982 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 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 [2021-06-06 00:03:34,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:03:34,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:34,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:34,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:34,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494724332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:34,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:34,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:03:34,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120829475] [2021-06-06 00:03:34,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:03:34,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:34,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:03:34,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:03:34,098 INFO L87 Difference]: Start difference. First operand 43183 states and 168694 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) [2021-06-06 00:03:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:35,388 INFO L93 Difference]: Finished difference Result 75388 states and 279801 transitions. [2021-06-06 00:03:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:03:35,389 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 [2021-06-06 00:03:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:35,739 INFO L225 Difference]: With dead ends: 75388 [2021-06-06 00:03:35,739 INFO L226 Difference]: Without dead ends: 75388 [2021-06-06 00:03:35,739 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 716.2ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:03:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75388 states. [2021-06-06 00:03:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75388 to 43180. [2021-06-06 00:03:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43180 states, 43179 states have (on average 3.906528636605757) internal successors, (168680), 43179 states have internal predecessors, (168680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43180 states to 43180 states and 168680 transitions. [2021-06-06 00:03:37,148 INFO L78 Accepts]: Start accepts. Automaton has 43180 states and 168680 transitions. Word has length 28 [2021-06-06 00:03:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:37,148 INFO L482 AbstractCegarLoop]: Abstraction has 43180 states and 168680 transitions. [2021-06-06 00:03:37,148 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) [2021-06-06 00:03:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 43180 states and 168680 transitions. [2021-06-06 00:03:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:37,404 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:37,404 INFO L554 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] [2021-06-06 00:03:37,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4056,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:37,620 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:37,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2039623402, now seen corresponding path program 142 times [2021-06-06 00:03:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:37,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097683408] [2021-06-06 00:03:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:37,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:37,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097683408] [2021-06-06 00:03:37,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097683408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:37,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662710789] [2021-06-06 00:03:37,649 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 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 [2021-06-06 00:03:37,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:37,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:37,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:37,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:37,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662710789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:37,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:37,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:03:37,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90309220] [2021-06-06 00:03:37,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:03:37,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:37,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:03:37,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:03:37,757 INFO L87 Difference]: Start difference. First operand 43180 states and 168680 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) [2021-06-06 00:03:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:38,992 INFO L93 Difference]: Finished difference Result 69979 states and 261702 transitions. [2021-06-06 00:03:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:03:38,993 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 [2021-06-06 00:03:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:39,155 INFO L225 Difference]: With dead ends: 69979 [2021-06-06 00:03:39,155 INFO L226 Difference]: Without dead ends: 69979 [2021-06-06 00:03:39,156 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 529.4ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:03:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69979 states. [2021-06-06 00:03:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69979 to 43204. [2021-06-06 00:03:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43204 states, 43203 states have (on average 3.9067657338610746) internal successors, (168784), 43203 states have internal predecessors, (168784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43204 states to 43204 states and 168784 transitions. [2021-06-06 00:03:40,406 INFO L78 Accepts]: Start accepts. Automaton has 43204 states and 168784 transitions. Word has length 28 [2021-06-06 00:03:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:40,406 INFO L482 AbstractCegarLoop]: Abstraction has 43204 states and 168784 transitions. [2021-06-06 00:03:40,407 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) [2021-06-06 00:03:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 43204 states and 168784 transitions. [2021-06-06 00:03:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:40,465 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:40,465 INFO L554 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] [2021-06-06 00:03:40,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4057 [2021-06-06 00:03:40,665 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:40,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2120999490, now seen corresponding path program 143 times [2021-06-06 00:03:40,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:40,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645903428] [2021-06-06 00:03:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:40,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:40,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645903428] [2021-06-06 00:03:40,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645903428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:40,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993520380] [2021-06-06 00:03:40,695 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 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 [2021-06-06 00:03:40,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:03:40,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:40,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:40,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993520380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:40,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:40,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:03:40,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694513885] [2021-06-06 00:03:40,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:03:40,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:40,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:03:40,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:03:40,797 INFO L87 Difference]: Start difference. First operand 43204 states and 168784 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) [2021-06-06 00:03:41,090 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-06-06 00:03:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:42,028 INFO L93 Difference]: Finished difference Result 69094 states and 259411 transitions. [2021-06-06 00:03:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:03:42,028 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 [2021-06-06 00:03:42,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:42,211 INFO L225 Difference]: With dead ends: 69094 [2021-06-06 00:03:42,211 INFO L226 Difference]: Without dead ends: 69086 [2021-06-06 00:03:42,212 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 627.8ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:03:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69086 states. [2021-06-06 00:03:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69086 to 43204. [2021-06-06 00:03:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43204 states, 43203 states have (on average 3.9066268546165777) internal successors, (168778), 43203 states have internal predecessors, (168778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43204 states to 43204 states and 168778 transitions. [2021-06-06 00:03:43,584 INFO L78 Accepts]: Start accepts. Automaton has 43204 states and 168778 transitions. Word has length 28 [2021-06-06 00:03:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:43,584 INFO L482 AbstractCegarLoop]: Abstraction has 43204 states and 168778 transitions. [2021-06-06 00:03:43,584 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) [2021-06-06 00:03:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 43204 states and 168778 transitions. [2021-06-06 00:03:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:43,642 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:43,642 INFO L554 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] [2021-06-06 00:03:43,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4058,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:43,843 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:43,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1243310590, now seen corresponding path program 144 times [2021-06-06 00:03:43,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:43,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985449802] [2021-06-06 00:03:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:43,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:43,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985449802] [2021-06-06 00:03:43,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985449802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:43,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307204348] [2021-06-06 00:03:43,872 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 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 [2021-06-06 00:03:43,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:03:43,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:43,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:43,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:44,117 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 10 [2021-06-06 00:03:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:44,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307204348] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:44,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:44,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:03:44,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258727880] [2021-06-06 00:03:44,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:03:44,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:44,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:03:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:03:44,154 INFO L87 Difference]: Start difference. First operand 43204 states and 168778 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) [2021-06-06 00:03:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:45,223 INFO L93 Difference]: Finished difference Result 68768 states and 258526 transitions. [2021-06-06 00:03:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:03:45,224 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 [2021-06-06 00:03:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:45,602 INFO L225 Difference]: With dead ends: 68768 [2021-06-06 00:03:45,602 INFO L226 Difference]: Without dead ends: 68768 [2021-06-06 00:03:45,602 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 515.0ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:03:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68768 states. [2021-06-06 00:03:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68768 to 43212. [2021-06-06 00:03:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43212 states, 43211 states have (on average 3.9066904260489226) internal successors, (168812), 43211 states have internal predecessors, (168812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43212 states to 43212 states and 168812 transitions. [2021-06-06 00:03:46,866 INFO L78 Accepts]: Start accepts. Automaton has 43212 states and 168812 transitions. Word has length 28 [2021-06-06 00:03:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:46,866 INFO L482 AbstractCegarLoop]: Abstraction has 43212 states and 168812 transitions. [2021-06-06 00:03:46,866 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) [2021-06-06 00:03:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 43212 states and 168812 transitions. [2021-06-06 00:03:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:46,925 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:46,925 INFO L554 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] [2021-06-06 00:03:47,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4059,224 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:47,125 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:47,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:47,125 INFO L82 PathProgramCache]: Analyzing trace with hash 399728564, now seen corresponding path program 145 times [2021-06-06 00:03:47,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:47,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869919659] [2021-06-06 00:03:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:47,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:47,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869919659] [2021-06-06 00:03:47,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869919659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:47,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694811657] [2021-06-06 00:03:47,155 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 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 [2021-06-06 00:03:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:47,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:47,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:47,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694811657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:47,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:47,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:03:47,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136629178] [2021-06-06 00:03:47,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:03:47,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:47,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:03:47,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:03:47,262 INFO L87 Difference]: Start difference. First operand 43212 states and 168812 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) [2021-06-06 00:03:47,722 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-06-06 00:03:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:48,439 INFO L93 Difference]: Finished difference Result 68557 states and 258000 transitions. [2021-06-06 00:03:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:03:48,440 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 [2021-06-06 00:03:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:48,613 INFO L225 Difference]: With dead ends: 68557 [2021-06-06 00:03:48,614 INFO L226 Difference]: Without dead ends: 68549 [2021-06-06 00:03:48,614 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 631.9ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:03:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68549 states. [2021-06-06 00:03:49,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68549 to 43212. [2021-06-06 00:03:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43212 states, 43211 states have (on average 3.906644141538034) internal successors, (168810), 43211 states have internal predecessors, (168810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43212 states to 43212 states and 168810 transitions. [2021-06-06 00:03:50,012 INFO L78 Accepts]: Start accepts. Automaton has 43212 states and 168810 transitions. Word has length 28 [2021-06-06 00:03:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:50,012 INFO L482 AbstractCegarLoop]: Abstraction has 43212 states and 168810 transitions. [2021-06-06 00:03:50,012 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) [2021-06-06 00:03:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 43212 states and 168810 transitions. [2021-06-06 00:03:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:50,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:50,079 INFO L554 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] [2021-06-06 00:03:50,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4060,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:50,280 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1403156548, now seen corresponding path program 146 times [2021-06-06 00:03:50,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:50,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729651060] [2021-06-06 00:03:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:50,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:50,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729651060] [2021-06-06 00:03:50,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729651060] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:50,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340600777] [2021-06-06 00:03:50,313 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 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 [2021-06-06 00:03:50,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:03:50,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:50,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:50,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:50,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340600777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:50,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:50,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:03:50,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908942413] [2021-06-06 00:03:50,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:03:50,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:50,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:03:50,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:03:50,418 INFO L87 Difference]: Start difference. First operand 43212 states and 168810 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) [2021-06-06 00:03:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:51,770 INFO L93 Difference]: Finished difference Result 67982 states and 254698 transitions. [2021-06-06 00:03:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:03:51,770 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 [2021-06-06 00:03:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:51,939 INFO L225 Difference]: With dead ends: 67982 [2021-06-06 00:03:51,939 INFO L226 Difference]: Without dead ends: 67982 [2021-06-06 00:03:51,939 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 589.5ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:03:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67982 states. [2021-06-06 00:03:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67982 to 46442. [2021-06-06 00:03:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46442 states, 46441 states have (on average 3.9102086518378156) internal successors, (181594), 46441 states have internal predecessors, (181594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46442 states to 46442 states and 181594 transitions. [2021-06-06 00:03:53,447 INFO L78 Accepts]: Start accepts. Automaton has 46442 states and 181594 transitions. Word has length 28 [2021-06-06 00:03:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:53,447 INFO L482 AbstractCegarLoop]: Abstraction has 46442 states and 181594 transitions. [2021-06-06 00:03:53,447 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) [2021-06-06 00:03:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 46442 states and 181594 transitions. [2021-06-06 00:03:53,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:53,518 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:53,518 INFO L554 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] [2021-06-06 00:03:53,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4061 [2021-06-06 00:03:53,718 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:53,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1484532636, now seen corresponding path program 147 times [2021-06-06 00:03:53,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:53,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676185436] [2021-06-06 00:03:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:53,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:53,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676185436] [2021-06-06 00:03:53,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676185436] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:53,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347318852] [2021-06-06 00:03:53,748 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 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 [2021-06-06 00:03:53,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:03:53,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:53,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:53,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:53,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347318852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:53,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:53,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:03:53,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322553187] [2021-06-06 00:03:53,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:03:53,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:53,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:03:53,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:03:53,838 INFO L87 Difference]: Start difference. First operand 46442 states and 181594 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) [2021-06-06 00:03:54,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:54,779 INFO L93 Difference]: Finished difference Result 67509 states and 253442 transitions. [2021-06-06 00:03:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:03:54,780 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 [2021-06-06 00:03:54,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:54,943 INFO L225 Difference]: With dead ends: 67509 [2021-06-06 00:03:54,944 INFO L226 Difference]: Without dead ends: 67501 [2021-06-06 00:03:54,944 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 439.2ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:03:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67501 states. [2021-06-06 00:03:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67501 to 46136. [2021-06-06 00:03:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46136 states, 46135 states have (on average 3.9156172103608973) internal successors, (180647), 46135 states have internal predecessors, (180647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46136 states to 46136 states and 180647 transitions. [2021-06-06 00:03:56,488 INFO L78 Accepts]: Start accepts. Automaton has 46136 states and 180647 transitions. Word has length 28 [2021-06-06 00:03:56,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:56,488 INFO L482 AbstractCegarLoop]: Abstraction has 46136 states and 180647 transitions. [2021-06-06 00:03:56,488 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) [2021-06-06 00:03:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 46136 states and 180647 transitions. [2021-06-06 00:03:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:56,552 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:56,552 INFO L554 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] [2021-06-06 00:03:56,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4062,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:56,752 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:56,753 INFO L82 PathProgramCache]: Analyzing trace with hash -30559336, now seen corresponding path program 148 times [2021-06-06 00:03:56,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:56,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339350555] [2021-06-06 00:03:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:56,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:56,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339350555] [2021-06-06 00:03:56,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339350555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:56,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074554882] [2021-06-06 00:03:56,783 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 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 [2021-06-06 00:03:56,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:03:56,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:56,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:56,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:56,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074554882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:56,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:56,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:03:56,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392799352] [2021-06-06 00:03:56,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:03:56,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:03:56,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:03:56,874 INFO L87 Difference]: Start difference. First operand 46136 states and 180647 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) [2021-06-06 00:03:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:03:57,858 INFO L93 Difference]: Finished difference Result 65985 states and 249225 transitions. [2021-06-06 00:03:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:03:57,858 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 [2021-06-06 00:03:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:03:58,024 INFO L225 Difference]: With dead ends: 65985 [2021-06-06 00:03:58,024 INFO L226 Difference]: Without dead ends: 65961 [2021-06-06 00:03:58,024 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 326.0ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:03:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65961 states. [2021-06-06 00:03:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65961 to 46032. [2021-06-06 00:03:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46032 states, 46031 states have (on average 3.915600356281636) internal successors, (180239), 46031 states have internal predecessors, (180239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:03:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46032 states to 46032 states and 180239 transitions. [2021-06-06 00:03:59,360 INFO L78 Accepts]: Start accepts. Automaton has 46032 states and 180239 transitions. Word has length 28 [2021-06-06 00:03:59,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:03:59,360 INFO L482 AbstractCegarLoop]: Abstraction has 46032 states and 180239 transitions. [2021-06-06 00:03:59,360 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) [2021-06-06 00:03:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 46032 states and 180239 transitions. [2021-06-06 00:03:59,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:03:59,630 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:03:59,630 INFO L554 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] [2021-06-06 00:03:59,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4063,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:03:59,831 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:03:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:03:59,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1566567380, now seen corresponding path program 149 times [2021-06-06 00:03:59,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:03:59,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900231684] [2021-06-06 00:03:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:03:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:03:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:03:59,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:03:59,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900231684] [2021-06-06 00:03:59,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900231684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:59,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346073155] [2021-06-06 00:03:59,866 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 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 [2021-06-06 00:03:59,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:03:59,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:03:59,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:03:59,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:03:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:03:59,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346073155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:03:59,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:03:59,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:03:59,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525188312] [2021-06-06 00:03:59,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:03:59,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:03:59,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:03:59,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:03:59,994 INFO L87 Difference]: Start difference. First operand 46032 states and 180239 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) [2021-06-06 00:04:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:01,142 INFO L93 Difference]: Finished difference Result 67202 states and 252555 transitions. [2021-06-06 00:04:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-06 00:04:01,142 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 [2021-06-06 00:04:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:01,318 INFO L225 Difference]: With dead ends: 67202 [2021-06-06 00:04:01,318 INFO L226 Difference]: Without dead ends: 67202 [2021-06-06 00:04:01,319 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 585.4ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:04:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67202 states. [2021-06-06 00:04:02,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67202 to 46128. [2021-06-06 00:04:02,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46128 states, 46127 states have (on average 3.9142584603377633) internal successors, (180553), 46127 states have internal predecessors, (180553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46128 states to 46128 states and 180553 transitions. [2021-06-06 00:04:02,652 INFO L78 Accepts]: Start accepts. Automaton has 46128 states and 180553 transitions. Word has length 28 [2021-06-06 00:04:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:02,652 INFO L482 AbstractCegarLoop]: Abstraction has 46128 states and 180553 transitions. [2021-06-06 00:04:02,653 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) [2021-06-06 00:04:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 46128 states and 180553 transitions. [2021-06-06 00:04:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:02,714 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:02,714 INFO L554 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] [2021-06-06 00:04:02,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4064 [2021-06-06 00:04:02,917 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:02,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1085360762, now seen corresponding path program 150 times [2021-06-06 00:04:02,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:02,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212534768] [2021-06-06 00:04:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:04:02,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:02,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212534768] [2021-06-06 00:04:02,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212534768] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:02,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763766697] [2021-06-06 00:04:02,950 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 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 [2021-06-06 00:04:02,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:04:02,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:02,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:02,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:03,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763766697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:03,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:03,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:04:03,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252196883] [2021-06-06 00:04:03,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:03,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:03,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:03,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:03,059 INFO L87 Difference]: Start difference. First operand 46128 states and 180553 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) [2021-06-06 00:04:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:04,228 INFO L93 Difference]: Finished difference Result 66883 states and 251651 transitions. [2021-06-06 00:04:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:04:04,228 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 [2021-06-06 00:04:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:04,437 INFO L225 Difference]: With dead ends: 66883 [2021-06-06 00:04:04,437 INFO L226 Difference]: Without dead ends: 66875 [2021-06-06 00:04:04,437 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 451.8ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:04:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66875 states. [2021-06-06 00:04:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66875 to 46060. [2021-06-06 00:04:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46060 states, 46059 states have (on average 3.9154345513363293) internal successors, (180341), 46059 states have internal predecessors, (180341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46060 states to 46060 states and 180341 transitions. [2021-06-06 00:04:05,803 INFO L78 Accepts]: Start accepts. Automaton has 46060 states and 180341 transitions. Word has length 28 [2021-06-06 00:04:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:05,804 INFO L482 AbstractCegarLoop]: Abstraction has 46060 states and 180341 transitions. [2021-06-06 00:04:05,804 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) [2021-06-06 00:04:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 46060 states and 180341 transitions. [2021-06-06 00:04:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:05,873 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:05,873 INFO L554 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] [2021-06-06 00:04:06,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4065 [2021-06-06 00:04:06,074 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1942149356, now seen corresponding path program 151 times [2021-06-06 00:04:06,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:06,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520802591] [2021-06-06 00:04:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:04:06,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:06,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520802591] [2021-06-06 00:04:06,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520802591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:06,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754615050] [2021-06-06 00:04:06,108 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 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 [2021-06-06 00:04:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:06,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:06,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754615050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:06,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:06,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:04:06,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364529442] [2021-06-06 00:04:06,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:06,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:06,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:06,214 INFO L87 Difference]: Start difference. First operand 46060 states and 180341 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) [2021-06-06 00:04:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:07,224 INFO L93 Difference]: Finished difference Result 65614 states and 248140 transitions. [2021-06-06 00:04:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:04:07,225 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 [2021-06-06 00:04:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:07,388 INFO L225 Difference]: With dead ends: 65614 [2021-06-06 00:04:07,388 INFO L226 Difference]: Without dead ends: 65590 [2021-06-06 00:04:07,389 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 331.2ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:04:07,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65590 states. [2021-06-06 00:04:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65590 to 46036. [2021-06-06 00:04:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46036 states, 46035 states have (on average 3.915564244596503) internal successors, (180253), 46035 states have internal predecessors, (180253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46036 states to 46036 states and 180253 transitions. [2021-06-06 00:04:08,721 INFO L78 Accepts]: Start accepts. Automaton has 46036 states and 180253 transitions. Word has length 28 [2021-06-06 00:04:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:08,721 INFO L482 AbstractCegarLoop]: Abstraction has 46036 states and 180253 transitions. [2021-06-06 00:04:08,721 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) [2021-06-06 00:04:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 46036 states and 180253 transitions. [2021-06-06 00:04:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:08,783 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:08,783 INFO L554 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] [2021-06-06 00:04:08,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4066 [2021-06-06 00:04:08,984 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1119483464, now seen corresponding path program 152 times [2021-06-06 00:04:08,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:08,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367908734] [2021-06-06 00:04:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:09,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:09,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367908734] [2021-06-06 00:04:09,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367908734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:09,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607364873] [2021-06-06 00:04:09,019 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 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 [2021-06-06 00:04:09,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:09,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:09,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:09,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:09,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607364873] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:09,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:09,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:04:09,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147441840] [2021-06-06 00:04:09,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:04:09,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:09,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:04:09,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:04:09,107 INFO L87 Difference]: Start difference. First operand 46036 states and 180253 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) [2021-06-06 00:04:09,579 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-06 00:04:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:10,679 INFO L93 Difference]: Finished difference Result 68913 states and 257576 transitions. [2021-06-06 00:04:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-06 00:04:10,679 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 [2021-06-06 00:04:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:10,846 INFO L225 Difference]: With dead ends: 68913 [2021-06-06 00:04:10,846 INFO L226 Difference]: Without dead ends: 68913 [2021-06-06 00:04:10,847 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 959.3ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-06 00:04:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68913 states. [2021-06-06 00:04:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68913 to 50828. [2021-06-06 00:04:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50828 states, 50827 states have (on average 3.8652881342593504) internal successors, (196461), 50827 states have internal predecessors, (196461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50828 states to 50828 states and 196461 transitions. [2021-06-06 00:04:12,504 INFO L78 Accepts]: Start accepts. Automaton has 50828 states and 196461 transitions. Word has length 28 [2021-06-06 00:04:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:12,504 INFO L482 AbstractCegarLoop]: Abstraction has 50828 states and 196461 transitions. [2021-06-06 00:04:12,504 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) [2021-06-06 00:04:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 50828 states and 196461 transitions. [2021-06-06 00:04:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:12,572 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:12,572 INFO L554 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] [2021-06-06 00:04:12,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4067 [2021-06-06 00:04:12,773 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1200859552, now seen corresponding path program 153 times [2021-06-06 00:04:12,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:12,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240996469] [2021-06-06 00:04:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:12,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:12,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240996469] [2021-06-06 00:04:12,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240996469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:12,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322423978] [2021-06-06 00:04:12,807 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 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 [2021-06-06 00:04:12,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:04:12,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:12,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:12,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:12,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322423978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:12,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:12,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:04:12,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646456093] [2021-06-06 00:04:12,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:04:12,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:12,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:04:12,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:04:12,891 INFO L87 Difference]: Start difference. First operand 50828 states and 196461 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) [2021-06-06 00:04:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:14,284 INFO L93 Difference]: Finished difference Result 68143 states and 255462 transitions. [2021-06-06 00:04:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:04:14,284 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 [2021-06-06 00:04:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:14,456 INFO L225 Difference]: With dead ends: 68143 [2021-06-06 00:04:14,457 INFO L226 Difference]: Without dead ends: 68135 [2021-06-06 00:04:14,457 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 598.8ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:04:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68135 states. [2021-06-06 00:04:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68135 to 49664. [2021-06-06 00:04:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49664 states, 49663 states have (on average 3.8827900046312145) internal successors, (192831), 49663 states have internal predecessors, (192831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49664 states to 49664 states and 192831 transitions. [2021-06-06 00:04:15,872 INFO L78 Accepts]: Start accepts. Automaton has 49664 states and 192831 transitions. Word has length 28 [2021-06-06 00:04:15,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:15,872 INFO L482 AbstractCegarLoop]: Abstraction has 49664 states and 192831 transitions. [2021-06-06 00:04:15,872 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) [2021-06-06 00:04:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 49664 states and 192831 transitions. [2021-06-06 00:04:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:15,938 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:15,938 INFO L554 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] [2021-06-06 00:04:16,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-06 00:04:16,139 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:16,139 INFO L82 PathProgramCache]: Analyzing trace with hash -314232420, now seen corresponding path program 154 times [2021-06-06 00:04:16,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:16,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937275042] [2021-06-06 00:04:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:16,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:16,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937275042] [2021-06-06 00:04:16,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937275042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:16,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474114392] [2021-06-06 00:04:16,174 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 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 [2021-06-06 00:04:16,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:16,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:16,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:16,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:16,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474114392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:16,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:16,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:04:16,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771940137] [2021-06-06 00:04:16,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:04:16,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:16,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:04:16,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:04:16,256 INFO L87 Difference]: Start difference. First operand 49664 states and 192831 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) [2021-06-06 00:04:16,885 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-06-06 00:04:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:17,573 INFO L93 Difference]: Finished difference Result 66443 states and 250710 transitions. [2021-06-06 00:04:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:04:17,573 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 [2021-06-06 00:04:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:17,742 INFO L225 Difference]: With dead ends: 66443 [2021-06-06 00:04:17,742 INFO L226 Difference]: Without dead ends: 66419 [2021-06-06 00:04:17,743 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 745.3ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:04:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66419 states. [2021-06-06 00:04:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66419 to 49644. [2021-06-06 00:04:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49644 states, 49643 states have (on average 3.8810507020123683) internal successors, (192667), 49643 states have internal predecessors, (192667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49644 states to 49644 states and 192667 transitions. [2021-06-06 00:04:19,129 INFO L78 Accepts]: Start accepts. Automaton has 49644 states and 192667 transitions. Word has length 28 [2021-06-06 00:04:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:19,129 INFO L482 AbstractCegarLoop]: Abstraction has 49644 states and 192667 transitions. [2021-06-06 00:04:19,129 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) [2021-06-06 00:04:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 49644 states and 192667 transitions. [2021-06-06 00:04:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:19,430 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:19,430 INFO L554 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] [2021-06-06 00:04:19,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:19,645 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:19,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1316197732, now seen corresponding path program 155 times [2021-06-06 00:04:19,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:19,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851681267] [2021-06-06 00:04:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:19,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:19,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851681267] [2021-06-06 00:04:19,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851681267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:19,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050329838] [2021-06-06 00:04:19,681 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 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 [2021-06-06 00:04:19,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:04:19,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:19,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:19,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:19,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050329838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:19,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:19,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:04:19,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420985097] [2021-06-06 00:04:19,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:04:19,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:19,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:04:19,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:04:19,768 INFO L87 Difference]: Start difference. First operand 49644 states and 192667 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) [2021-06-06 00:04:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:20,772 INFO L93 Difference]: Finished difference Result 67813 states and 254591 transitions. [2021-06-06 00:04:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:04:20,772 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 [2021-06-06 00:04:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:20,944 INFO L225 Difference]: With dead ends: 67813 [2021-06-06 00:04:20,945 INFO L226 Difference]: Without dead ends: 67773 [2021-06-06 00:04:20,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 477.7ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:04:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67773 states. [2021-06-06 00:04:22,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67773 to 49798. [2021-06-06 00:04:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49798 states, 49797 states have (on average 3.880394401269153) internal successors, (193232), 49797 states have internal predecessors, (193232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:22,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49798 states to 49798 states and 193232 transitions. [2021-06-06 00:04:22,518 INFO L78 Accepts]: Start accepts. Automaton has 49798 states and 193232 transitions. Word has length 28 [2021-06-06 00:04:22,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:22,518 INFO L482 AbstractCegarLoop]: Abstraction has 49798 states and 193232 transitions. [2021-06-06 00:04:22,518 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) [2021-06-06 00:04:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 49798 states and 193232 transitions. [2021-06-06 00:04:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:22,600 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:22,600 INFO L554 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] [2021-06-06 00:04:22,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4070 [2021-06-06 00:04:22,805 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1262992088, now seen corresponding path program 156 times [2021-06-06 00:04:22,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:22,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983758311] [2021-06-06 00:04:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:22,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:22,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983758311] [2021-06-06 00:04:22,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983758311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:22,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004057589] [2021-06-06 00:04:22,851 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 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 [2021-06-06 00:04:22,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:04:22,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:22,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:22,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:22,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004057589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:22,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:22,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:04:22,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694954169] [2021-06-06 00:04:22,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:04:22,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:04:22,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:04:22,980 INFO L87 Difference]: Start difference. First operand 49798 states and 193232 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) [2021-06-06 00:04:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:24,566 INFO L93 Difference]: Finished difference Result 66932 states and 251929 transitions. [2021-06-06 00:04:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-06 00:04:24,567 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 [2021-06-06 00:04:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:24,730 INFO L225 Difference]: With dead ends: 66932 [2021-06-06 00:04:24,730 INFO L226 Difference]: Without dead ends: 66932 [2021-06-06 00:04:24,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 781.4ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-06 00:04:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66932 states. [2021-06-06 00:04:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66932 to 50703. [2021-06-06 00:04:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50703 states, 50702 states have (on average 3.871701313557651) internal successors, (196303), 50702 states have internal predecessors, (196303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50703 states to 50703 states and 196303 transitions. [2021-06-06 00:04:26,078 INFO L78 Accepts]: Start accepts. Automaton has 50703 states and 196303 transitions. Word has length 28 [2021-06-06 00:04:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:26,078 INFO L482 AbstractCegarLoop]: Abstraction has 50703 states and 196303 transitions. [2021-06-06 00:04:26,078 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) [2021-06-06 00:04:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand 50703 states and 196303 transitions. [2021-06-06 00:04:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:26,148 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:26,148 INFO L554 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] [2021-06-06 00:04:26,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4071,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:26,348 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1388936054, now seen corresponding path program 157 times [2021-06-06 00:04:26,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:26,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590615315] [2021-06-06 00:04:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:26,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:26,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590615315] [2021-06-06 00:04:26,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590615315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:26,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133989277] [2021-06-06 00:04:26,385 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 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 [2021-06-06 00:04:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:26,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:26,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133989277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:26,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:26,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:04:26,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893323091] [2021-06-06 00:04:26,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:04:26,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:04:26,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:04:26,500 INFO L87 Difference]: Start difference. First operand 50703 states and 196303 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) [2021-06-06 00:04:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:27,883 INFO L93 Difference]: Finished difference Result 66428 states and 250518 transitions. [2021-06-06 00:04:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:04:27,884 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 [2021-06-06 00:04:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:28,049 INFO L225 Difference]: With dead ends: 66428 [2021-06-06 00:04:28,049 INFO L226 Difference]: Without dead ends: 66420 [2021-06-06 00:04:28,049 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 836.1ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:04:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66420 states. [2021-06-06 00:04:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66420 to 50627. [2021-06-06 00:04:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50627 states, 50626 states have (on average 3.8728518942835697) internal successors, (196067), 50626 states have internal predecessors, (196067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50627 states to 50627 states and 196067 transitions. [2021-06-06 00:04:29,465 INFO L78 Accepts]: Start accepts. Automaton has 50627 states and 196067 transitions. Word has length 28 [2021-06-06 00:04:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:29,465 INFO L482 AbstractCegarLoop]: Abstraction has 50627 states and 196067 transitions. [2021-06-06 00:04:29,465 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) [2021-06-06 00:04:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 50627 states and 196067 transitions. [2021-06-06 00:04:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:29,536 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:29,536 INFO L554 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] [2021-06-06 00:04:29,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4072 [2021-06-06 00:04:29,737 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1638574064, now seen corresponding path program 158 times [2021-06-06 00:04:29,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:29,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584740845] [2021-06-06 00:04:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:29,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:29,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584740845] [2021-06-06 00:04:29,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584740845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:29,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878386984] [2021-06-06 00:04:29,773 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 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 [2021-06-06 00:04:29,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:29,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:29,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:29,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:29,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878386984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:29,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:29,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:29,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360012839] [2021-06-06 00:04:29,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:29,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:29,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:29,875 INFO L87 Difference]: Start difference. First operand 50627 states and 196067 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) [2021-06-06 00:04:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:31,146 INFO L93 Difference]: Finished difference Result 65905 states and 249272 transitions. [2021-06-06 00:04:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:04:31,147 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 [2021-06-06 00:04:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:31,310 INFO L225 Difference]: With dead ends: 65905 [2021-06-06 00:04:31,310 INFO L226 Difference]: Without dead ends: 65881 [2021-06-06 00:04:31,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 753.3ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:04:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65881 states. [2021-06-06 00:04:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65881 to 50613. [2021-06-06 00:04:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50613 states, 50612 states have (on average 3.872836481466846) internal successors, (196012), 50612 states have internal predecessors, (196012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:32,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50613 states to 50613 states and 196012 transitions. [2021-06-06 00:04:32,934 INFO L78 Accepts]: Start accepts. Automaton has 50613 states and 196012 transitions. Word has length 28 [2021-06-06 00:04:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:32,934 INFO L482 AbstractCegarLoop]: Abstraction has 50613 states and 196012 transitions. [2021-06-06 00:04:32,934 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) [2021-06-06 00:04:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 50613 states and 196012 transitions. [2021-06-06 00:04:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:33,014 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:33,014 INFO L554 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] [2021-06-06 00:04:33,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4073,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:04:33,214 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1972807316, now seen corresponding path program 159 times [2021-06-06 00:04:33,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:33,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523034054] [2021-06-06 00:04:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:33,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:33,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523034054] [2021-06-06 00:04:33,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523034054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:33,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780515278] [2021-06-06 00:04:33,251 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 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 [2021-06-06 00:04:33,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:04:33,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:33,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:33,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:33,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780515278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:33,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:33,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:04:33,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448864576] [2021-06-06 00:04:33,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:04:33,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:33,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:04:33,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:04:33,346 INFO L87 Difference]: Start difference. First operand 50613 states and 196012 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) [2021-06-06 00:04:34,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:34,360 INFO L93 Difference]: Finished difference Result 65687 states and 248579 transitions. [2021-06-06 00:04:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:04:34,360 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 [2021-06-06 00:04:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:34,535 INFO L225 Difference]: With dead ends: 65687 [2021-06-06 00:04:34,535 INFO L226 Difference]: Without dead ends: 65647 [2021-06-06 00:04:34,535 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 486.1ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:04:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65647 states. [2021-06-06 00:04:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65647 to 50962. [2021-06-06 00:04:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50962 states, 50961 states have (on average 3.874354898844214) internal successors, (197441), 50961 states have internal predecessors, (197441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50962 states to 50962 states and 197441 transitions. [2021-06-06 00:04:36,174 INFO L78 Accepts]: Start accepts. Automaton has 50962 states and 197441 transitions. Word has length 28 [2021-06-06 00:04:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:36,175 INFO L482 AbstractCegarLoop]: Abstraction has 50962 states and 197441 transitions. [2021-06-06 00:04:36,175 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) [2021-06-06 00:04:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 50962 states and 197441 transitions. [2021-06-06 00:04:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:36,244 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:36,244 INFO L554 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] [2021-06-06 00:04:36,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4074 [2021-06-06 00:04:36,445 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:36,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:36,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1825824890, now seen corresponding path program 160 times [2021-06-06 00:04:36,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:36,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858781944] [2021-06-06 00:04:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:36,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:36,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858781944] [2021-06-06 00:04:36,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858781944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:36,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902316619] [2021-06-06 00:04:36,487 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 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 [2021-06-06 00:04:36,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:36,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:36,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:36,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:36,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902316619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:36,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:36,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:36,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441750695] [2021-06-06 00:04:36,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:36,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:36,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:36,595 INFO L87 Difference]: Start difference. First operand 50962 states and 197441 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) [2021-06-06 00:04:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:38,076 INFO L93 Difference]: Finished difference Result 79769 states and 298419 transitions. [2021-06-06 00:04:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:04:38,076 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 [2021-06-06 00:04:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:38,275 INFO L225 Difference]: With dead ends: 79769 [2021-06-06 00:04:38,276 INFO L226 Difference]: Without dead ends: 79769 [2021-06-06 00:04:38,276 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 560.1ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:04:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79769 states. [2021-06-06 00:04:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79769 to 52128. [2021-06-06 00:04:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52128 states, 52127 states have (on average 3.8865846873980856) internal successors, (202596), 52127 states have internal predecessors, (202596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52128 states to 52128 states and 202596 transitions. [2021-06-06 00:04:39,686 INFO L78 Accepts]: Start accepts. Automaton has 52128 states and 202596 transitions. Word has length 28 [2021-06-06 00:04:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:39,686 INFO L482 AbstractCegarLoop]: Abstraction has 52128 states and 202596 transitions. [2021-06-06 00:04:39,686 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) [2021-06-06 00:04:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 52128 states and 202596 transitions. [2021-06-06 00:04:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:39,759 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:39,759 INFO L554 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] [2021-06-06 00:04:39,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4075 [2021-06-06 00:04:39,960 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1151103012, now seen corresponding path program 161 times [2021-06-06 00:04:39,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:39,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096522117] [2021-06-06 00:04:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:39,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:39,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096522117] [2021-06-06 00:04:39,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096522117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:39,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326502901] [2021-06-06 00:04:39,996 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 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 [2021-06-06 00:04:40,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:04:40,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:40,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:40,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:40,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326502901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:40,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:40,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:40,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991219617] [2021-06-06 00:04:40,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:40,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:40,104 INFO L87 Difference]: Start difference. First operand 52128 states and 202596 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) [2021-06-06 00:04:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:41,498 INFO L93 Difference]: Finished difference Result 72910 states and 276752 transitions. [2021-06-06 00:04:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:04:41,498 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 [2021-06-06 00:04:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:41,677 INFO L225 Difference]: With dead ends: 72910 [2021-06-06 00:04:41,677 INFO L226 Difference]: Without dead ends: 72910 [2021-06-06 00:04:41,677 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 506.8ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:04:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72910 states. [2021-06-06 00:04:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72910 to 52158. [2021-06-06 00:04:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52158 states, 52157 states have (on average 3.886400674885442) internal successors, (202703), 52157 states have internal predecessors, (202703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52158 states to 52158 states and 202703 transitions. [2021-06-06 00:04:43,197 INFO L78 Accepts]: Start accepts. Automaton has 52158 states and 202703 transitions. Word has length 28 [2021-06-06 00:04:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:43,197 INFO L482 AbstractCegarLoop]: Abstraction has 52158 states and 202703 transitions. [2021-06-06 00:04:43,197 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) [2021-06-06 00:04:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 52158 states and 202703 transitions. [2021-06-06 00:04:43,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:43,267 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:43,268 INFO L554 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] [2021-06-06 00:04:43,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4076 [2021-06-06 00:04:43,468 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:43,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1490504108, now seen corresponding path program 162 times [2021-06-06 00:04:43,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:43,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760980620] [2021-06-06 00:04:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:43,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:43,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760980620] [2021-06-06 00:04:43,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760980620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:43,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150807973] [2021-06-06 00:04:43,504 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 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 [2021-06-06 00:04:43,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:04:43,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:43,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:43,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:43,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150807973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:43,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:43,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:04:43,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45053821] [2021-06-06 00:04:43,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:04:43,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:43,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:04:43,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:04:43,644 INFO L87 Difference]: Start difference. First operand 52158 states and 202703 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) [2021-06-06 00:04:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:45,346 INFO L93 Difference]: Finished difference Result 73768 states and 279188 transitions. [2021-06-06 00:04:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:04:45,347 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 [2021-06-06 00:04:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:45,535 INFO L225 Difference]: With dead ends: 73768 [2021-06-06 00:04:45,535 INFO L226 Difference]: Without dead ends: 73768 [2021-06-06 00:04:45,535 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 1087.8ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-06 00:04:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73768 states. [2021-06-06 00:04:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73768 to 52422. [2021-06-06 00:04:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52422 states, 52421 states have (on average 3.8831956658591023) internal successors, (203561), 52421 states have internal predecessors, (203561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52422 states to 52422 states and 203561 transitions. [2021-06-06 00:04:47,190 INFO L78 Accepts]: Start accepts. Automaton has 52422 states and 203561 transitions. Word has length 28 [2021-06-06 00:04:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:47,190 INFO L482 AbstractCegarLoop]: Abstraction has 52422 states and 203561 transitions. [2021-06-06 00:04:47,190 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) [2021-06-06 00:04:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 52422 states and 203561 transitions. [2021-06-06 00:04:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:47,265 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:47,265 INFO L554 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] [2021-06-06 00:04:47,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4077 [2021-06-06 00:04:47,466 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash 152535046, now seen corresponding path program 163 times [2021-06-06 00:04:47,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:47,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912656046] [2021-06-06 00:04:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:47,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:47,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912656046] [2021-06-06 00:04:47,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912656046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:47,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766447011] [2021-06-06 00:04:47,501 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 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 [2021-06-06 00:04:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:47,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:47,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:47,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766447011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:47,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:47,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:04:47,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047335784] [2021-06-06 00:04:47,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:04:47,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:47,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:04:47,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:04:47,611 INFO L87 Difference]: Start difference. First operand 52422 states and 203561 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) [2021-06-06 00:04:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:49,144 INFO L93 Difference]: Finished difference Result 72980 states and 276953 transitions. [2021-06-06 00:04:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:04:49,145 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 [2021-06-06 00:04:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:49,340 INFO L225 Difference]: With dead ends: 72980 [2021-06-06 00:04:49,340 INFO L226 Difference]: Without dead ends: 72976 [2021-06-06 00:04:49,341 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 662.2ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-06 00:04:49,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72976 states. [2021-06-06 00:04:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72976 to 52058. [2021-06-06 00:04:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52058 states, 52057 states have (on average 3.8866050675221393) internal successors, (202325), 52057 states have internal predecessors, (202325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52058 states to 52058 states and 202325 transitions. [2021-06-06 00:04:50,793 INFO L78 Accepts]: Start accepts. Automaton has 52058 states and 202325 transitions. Word has length 28 [2021-06-06 00:04:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:50,793 INFO L482 AbstractCegarLoop]: Abstraction has 52058 states and 202325 transitions. [2021-06-06 00:04:50,793 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) [2021-06-06 00:04:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 52058 states and 202325 transitions. [2021-06-06 00:04:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:50,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:50,867 INFO L554 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] [2021-06-06 00:04:51,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4078 [2021-06-06 00:04:51,067 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:51,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1936993134, now seen corresponding path program 164 times [2021-06-06 00:04:51,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:51,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321916895] [2021-06-06 00:04:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:51,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:51,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321916895] [2021-06-06 00:04:51,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321916895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:51,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790412861] [2021-06-06 00:04:51,105 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 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 [2021-06-06 00:04:51,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:04:51,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:51,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:51,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:51,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790412861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:51,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:51,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:51,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994101954] [2021-06-06 00:04:51,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:51,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:51,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:51,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:51,214 INFO L87 Difference]: Start difference. First operand 52058 states and 202325 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) [2021-06-06 00:04:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:52,368 INFO L93 Difference]: Finished difference Result 66943 states and 255942 transitions. [2021-06-06 00:04:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:04:52,368 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 [2021-06-06 00:04:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:52,545 INFO L225 Difference]: With dead ends: 66943 [2021-06-06 00:04:52,545 INFO L226 Difference]: Without dead ends: 66943 [2021-06-06 00:04:52,545 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 434.5ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:04:52,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66943 states. [2021-06-06 00:04:53,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66943 to 52074. [2021-06-06 00:04:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52074 states, 52073 states have (on average 3.8882530294010333) internal successors, (202473), 52073 states have internal predecessors, (202473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52074 states to 52074 states and 202473 transitions. [2021-06-06 00:04:54,075 INFO L78 Accepts]: Start accepts. Automaton has 52074 states and 202473 transitions. Word has length 28 [2021-06-06 00:04:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:54,075 INFO L482 AbstractCegarLoop]: Abstraction has 52074 states and 202473 transitions. [2021-06-06 00:04:54,076 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) [2021-06-06 00:04:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 52074 states and 202473 transitions. [2021-06-06 00:04:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:54,146 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:54,146 INFO L554 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] [2021-06-06 00:04:54,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-06 00:04:54,347 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:54,347 INFO L82 PathProgramCache]: Analyzing trace with hash -756673454, now seen corresponding path program 165 times [2021-06-06 00:04:54,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:54,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513232186] [2021-06-06 00:04:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:54,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:54,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513232186] [2021-06-06 00:04:54,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513232186] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:54,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327532235] [2021-06-06 00:04:54,382 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 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 [2021-06-06 00:04:54,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:04:54,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:54,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:54,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:54,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327532235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:54,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:54,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:54,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321257045] [2021-06-06 00:04:54,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:54,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:54,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:54,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:54,496 INFO L87 Difference]: Start difference. First operand 52074 states and 202473 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) [2021-06-06 00:04:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:55,503 INFO L93 Difference]: Finished difference Result 66257 states and 254067 transitions. [2021-06-06 00:04:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:04:55,504 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 [2021-06-06 00:04:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:55,665 INFO L225 Difference]: With dead ends: 66257 [2021-06-06 00:04:55,665 INFO L226 Difference]: Without dead ends: 66245 [2021-06-06 00:04:55,666 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 333.5ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:04:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66245 states. [2021-06-06 00:04:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66245 to 52008. [2021-06-06 00:04:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52008 states, 52007 states have (on average 3.889284134828004) internal successors, (202270), 52007 states have internal predecessors, (202270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52008 states to 52008 states and 202270 transitions. [2021-06-06 00:04:57,033 INFO L78 Accepts]: Start accepts. Automaton has 52008 states and 202270 transitions. Word has length 28 [2021-06-06 00:04:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:57,033 INFO L482 AbstractCegarLoop]: Abstraction has 52008 states and 202270 transitions. [2021-06-06 00:04:57,034 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) [2021-06-06 00:04:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 52008 states and 202270 transitions. [2021-06-06 00:04:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:57,106 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:57,106 INFO L554 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] [2021-06-06 00:04:57,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4080 [2021-06-06 00:04:57,306 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:04:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:04:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1537074702, now seen corresponding path program 166 times [2021-06-06 00:04:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:04:57,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661494433] [2021-06-06 00:04:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:04:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:04:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:57,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:04:57,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661494433] [2021-06-06 00:04:57,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661494433] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:57,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808791863] [2021-06-06 00:04:57,345 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 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 [2021-06-06 00:04:57,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:04:57,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:04:57,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:04:57,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:04:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:04:57,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808791863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:04:57,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:04:57,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:04:57,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864672872] [2021-06-06 00:04:57,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:04:57,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:04:57,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:04:57,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:04:57,451 INFO L87 Difference]: Start difference. First operand 52008 states and 202270 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) [2021-06-06 00:04:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:04:58,373 INFO L93 Difference]: Finished difference Result 56548 states and 217322 transitions. [2021-06-06 00:04:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:04:58,373 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 [2021-06-06 00:04:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:04:58,521 INFO L225 Difference]: With dead ends: 56548 [2021-06-06 00:04:58,522 INFO L226 Difference]: Without dead ends: 56548 [2021-06-06 00:04:58,522 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 293.5ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:04:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56548 states. [2021-06-06 00:04:59,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56548 to 52216. [2021-06-06 00:04:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52216 states, 52215 states have (on average 3.8870439528871015) internal successors, (202962), 52215 states have internal predecessors, (202962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:04:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52216 states to 52216 states and 202962 transitions. [2021-06-06 00:04:59,833 INFO L78 Accepts]: Start accepts. Automaton has 52216 states and 202962 transitions. Word has length 28 [2021-06-06 00:04:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:04:59,834 INFO L482 AbstractCegarLoop]: Abstraction has 52216 states and 202962 transitions. [2021-06-06 00:04:59,834 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) [2021-06-06 00:04:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 52216 states and 202962 transitions. [2021-06-06 00:04:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:04:59,905 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:04:59,906 INFO L554 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] [2021-06-06 00:05:00,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4081,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:00,106 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:00,106 INFO L82 PathProgramCache]: Analyzing trace with hash 538506736, now seen corresponding path program 167 times [2021-06-06 00:05:00,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:00,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764175699] [2021-06-06 00:05:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:00,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:00,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764175699] [2021-06-06 00:05:00,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764175699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:00,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411428709] [2021-06-06 00:05:00,139 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 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 [2021-06-06 00:05:00,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:05:00,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:00,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:00,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:00,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411428709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:00,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:00,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:05:00,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793945358] [2021-06-06 00:05:00,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:05:00,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:00,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:05:00,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:05:00,237 INFO L87 Difference]: Start difference. First operand 52216 states and 202962 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) [2021-06-06 00:05:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:00,823 INFO L93 Difference]: Finished difference Result 56395 states and 216924 transitions. [2021-06-06 00:05:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:05:00,823 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 [2021-06-06 00:05:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:00,960 INFO L225 Difference]: With dead ends: 56395 [2021-06-06 00:05:00,960 INFO L226 Difference]: Without dead ends: 56391 [2021-06-06 00:05:00,960 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 231.4ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:05:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56391 states. [2021-06-06 00:05:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56391 to 52156. [2021-06-06 00:05:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52156 states, 52155 states have (on average 3.887834339948231) internal successors, (202770), 52155 states have internal predecessors, (202770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52156 states to 52156 states and 202770 transitions. [2021-06-06 00:05:02,592 INFO L78 Accepts]: Start accepts. Automaton has 52156 states and 202770 transitions. Word has length 28 [2021-06-06 00:05:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:02,592 INFO L482 AbstractCegarLoop]: Abstraction has 52156 states and 202770 transitions. [2021-06-06 00:05:02,592 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) [2021-06-06 00:05:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 52156 states and 202770 transitions. [2021-06-06 00:05:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:02,663 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:02,663 INFO L554 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] [2021-06-06 00:05:02,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4082 [2021-06-06 00:05:02,863 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:02,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:02,864 INFO L82 PathProgramCache]: Analyzing trace with hash 508703680, now seen corresponding path program 80 times [2021-06-06 00:05:02,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:02,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382600004] [2021-06-06 00:05:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:02,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:02,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382600004] [2021-06-06 00:05:02,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382600004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:02,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441835913] [2021-06-06 00:05:02,904 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 [2021-06-06 00:05:02,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:02,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:02,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:02,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:02,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441835913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:02,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:02,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:05:02,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019825990] [2021-06-06 00:05:02,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:02,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:02,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:02,979 INFO L87 Difference]: Start difference. First operand 52156 states and 202770 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) [2021-06-06 00:05:03,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:03,529 INFO L93 Difference]: Finished difference Result 56442 states and 217026 transitions. [2021-06-06 00:05:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:05:03,530 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 [2021-06-06 00:05:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:03,670 INFO L225 Difference]: With dead ends: 56442 [2021-06-06 00:05:03,670 INFO L226 Difference]: Without dead ends: 56442 [2021-06-06 00:05:03,670 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 198.0ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:05:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56442 states. [2021-06-06 00:05:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56442 to 52260. [2021-06-06 00:05:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52260 states, 52259 states have (on average 3.88629709715073) internal successors, (203094), 52259 states have internal predecessors, (203094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52260 states to 52260 states and 203094 transitions. [2021-06-06 00:05:04,926 INFO L78 Accepts]: Start accepts. Automaton has 52260 states and 203094 transitions. Word has length 28 [2021-06-06 00:05:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:04,926 INFO L482 AbstractCegarLoop]: Abstraction has 52260 states and 203094 transitions. [2021-06-06 00:05:04,926 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) [2021-06-06 00:05:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 52260 states and 203094 transitions. [2021-06-06 00:05:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:04,998 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:04,999 INFO L554 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] [2021-06-06 00:05:05,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4083,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:05,201 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:05,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1414052632, now seen corresponding path program 81 times [2021-06-06 00:05:05,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:05,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403671625] [2021-06-06 00:05:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:05,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:05,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403671625] [2021-06-06 00:05:05,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403671625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:05,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534531775] [2021-06-06 00:05:05,233 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 [2021-06-06 00:05:05,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:05:05,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:05,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:05,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:05:05,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534531775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:05,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:05,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-06 00:05:05,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622330221] [2021-06-06 00:05:05,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:05:05,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:05,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:05:05,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:05:05,299 INFO L87 Difference]: Start difference. First operand 52260 states and 203094 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) [2021-06-06 00:05:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:06,056 INFO L93 Difference]: Finished difference Result 56568 states and 217524 transitions. [2021-06-06 00:05:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:05:06,057 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 [2021-06-06 00:05:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:06,205 INFO L225 Difference]: With dead ends: 56568 [2021-06-06 00:05:06,205 INFO L226 Difference]: Without dead ends: 56556 [2021-06-06 00:05:06,205 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 142.6ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:05:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56556 states. [2021-06-06 00:05:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56556 to 52394. [2021-06-06 00:05:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52394 states, 52393 states have (on average 3.8846601645257954) internal successors, (203529), 52393 states have internal predecessors, (203529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52394 states to 52394 states and 203529 transitions. [2021-06-06 00:05:07,491 INFO L78 Accepts]: Start accepts. Automaton has 52394 states and 203529 transitions. Word has length 28 [2021-06-06 00:05:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:07,491 INFO L482 AbstractCegarLoop]: Abstraction has 52394 states and 203529 transitions. [2021-06-06 00:05:07,491 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) [2021-06-06 00:05:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 52394 states and 203529 transitions. [2021-06-06 00:05:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:07,568 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:07,568 INFO L554 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] [2021-06-06 00:05:07,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4084 [2021-06-06 00:05:07,768 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:07,769 INFO L82 PathProgramCache]: Analyzing trace with hash 421559068, now seen corresponding path program 82 times [2021-06-06 00:05:07,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:07,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865018991] [2021-06-06 00:05:07,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:07,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:07,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865018991] [2021-06-06 00:05:07,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865018991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:07,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932726417] [2021-06-06 00:05:07,804 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 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 [2021-06-06 00:05:07,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:07,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:07,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:05:07,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:07,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932726417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:07,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:07,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:05:07,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774235362] [2021-06-06 00:05:07,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:05:07,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:07,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:05:07,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:05:07,873 INFO L87 Difference]: Start difference. First operand 52394 states and 203529 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) [2021-06-06 00:05:08,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:08,607 INFO L93 Difference]: Finished difference Result 56532 states and 217440 transitions. [2021-06-06 00:05:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:05:08,608 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 [2021-06-06 00:05:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:08,751 INFO L225 Difference]: With dead ends: 56532 [2021-06-06 00:05:08,751 INFO L226 Difference]: Without dead ends: 56512 [2021-06-06 00:05:08,751 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:05:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56512 states. [2021-06-06 00:05:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56512 to 52394. [2021-06-06 00:05:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52394 states, 52393 states have (on average 3.8845838184490296) internal successors, (203525), 52393 states have internal predecessors, (203525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52394 states to 52394 states and 203525 transitions. [2021-06-06 00:05:09,977 INFO L78 Accepts]: Start accepts. Automaton has 52394 states and 203525 transitions. Word has length 28 [2021-06-06 00:05:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:09,977 INFO L482 AbstractCegarLoop]: Abstraction has 52394 states and 203525 transitions. [2021-06-06 00:05:09,977 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) [2021-06-06 00:05:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 52394 states and 203525 transitions. [2021-06-06 00:05:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:10,052 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:10,052 INFO L554 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] [2021-06-06 00:05:10,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4085 [2021-06-06 00:05:10,253 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:10,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1989119940, now seen corresponding path program 168 times [2021-06-06 00:05:10,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:10,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636521805] [2021-06-06 00:05:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:10,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:10,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636521805] [2021-06-06 00:05:10,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636521805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:10,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501749269] [2021-06-06 00:05:10,286 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 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 [2021-06-06 00:05:10,309 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:05:10,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:10,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:10,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:10,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501749269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:10,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:10,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:05:10,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696224691] [2021-06-06 00:05:10,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:10,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:10,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:10,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:10,366 INFO L87 Difference]: Start difference. First operand 52394 states and 203525 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) [2021-06-06 00:05:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:10,816 INFO L93 Difference]: Finished difference Result 57355 states and 221090 transitions. [2021-06-06 00:05:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:05:10,816 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 [2021-06-06 00:05:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:10,957 INFO L225 Difference]: With dead ends: 57355 [2021-06-06 00:05:10,957 INFO L226 Difference]: Without dead ends: 57342 [2021-06-06 00:05:10,958 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:05:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57342 states. [2021-06-06 00:05:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57342 to 55127. [2021-06-06 00:05:12,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55127 states, 55126 states have (on average 3.891321699379603) internal successors, (214513), 55126 states have internal predecessors, (214513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55127 states to 55127 states and 214513 transitions. [2021-06-06 00:05:12,579 INFO L78 Accepts]: Start accepts. Automaton has 55127 states and 214513 transitions. Word has length 28 [2021-06-06 00:05:12,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:12,579 INFO L482 AbstractCegarLoop]: Abstraction has 55127 states and 214513 transitions. [2021-06-06 00:05:12,579 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) [2021-06-06 00:05:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 55127 states and 214513 transitions. [2021-06-06 00:05:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:12,666 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:12,666 INFO L554 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] [2021-06-06 00:05:12,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4086 [2021-06-06 00:05:12,866 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1306375610, now seen corresponding path program 169 times [2021-06-06 00:05:12,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:12,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907533880] [2021-06-06 00:05:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:12,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:12,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907533880] [2021-06-06 00:05:12,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907533880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:12,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173734098] [2021-06-06 00:05:12,899 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 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 [2021-06-06 00:05:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:12,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:12,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173734098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:12,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:12,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:05:12,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848470388] [2021-06-06 00:05:12,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:12,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:12,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:12,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:12,980 INFO L87 Difference]: Start difference. First operand 55127 states and 214513 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) [2021-06-06 00:05:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:13,483 INFO L93 Difference]: Finished difference Result 61086 states and 233937 transitions. [2021-06-06 00:05:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:05:13,483 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 [2021-06-06 00:05:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:13,631 INFO L225 Difference]: With dead ends: 61086 [2021-06-06 00:05:13,631 INFO L226 Difference]: Without dead ends: 61086 [2021-06-06 00:05:13,631 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 147.4ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:05:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61086 states. [2021-06-06 00:05:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61086 to 48711. [2021-06-06 00:05:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48711 states, 48710 states have (on average 3.8803736399096693) internal successors, (189013), 48710 states have internal predecessors, (189013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48711 states to 48711 states and 189013 transitions. [2021-06-06 00:05:14,830 INFO L78 Accepts]: Start accepts. Automaton has 48711 states and 189013 transitions. Word has length 28 [2021-06-06 00:05:14,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:14,830 INFO L482 AbstractCegarLoop]: Abstraction has 48711 states and 189013 transitions. [2021-06-06 00:05:14,830 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) [2021-06-06 00:05:14,830 INFO L276 IsEmpty]: Start isEmpty. Operand 48711 states and 189013 transitions. [2021-06-06 00:05:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:14,895 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:14,895 INFO L554 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] [2021-06-06 00:05:15,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4087 [2021-06-06 00:05:15,095 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:15,096 INFO L82 PathProgramCache]: Analyzing trace with hash 986257146, now seen corresponding path program 170 times [2021-06-06 00:05:15,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:15,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501799638] [2021-06-06 00:05:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:15,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:15,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501799638] [2021-06-06 00:05:15,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501799638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:15,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750004268] [2021-06-06 00:05:15,128 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 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 [2021-06-06 00:05:15,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:05:15,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:15,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:15,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:15,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750004268] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:15,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:15,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:05:15,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750744924] [2021-06-06 00:05:15,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:05:15,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:15,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:05:15,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:05:15,211 INFO L87 Difference]: Start difference. First operand 48711 states and 189013 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) [2021-06-06 00:05:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:15,935 INFO L93 Difference]: Finished difference Result 53676 states and 205772 transitions. [2021-06-06 00:05:15,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:05:15,936 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 [2021-06-06 00:05:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:16,066 INFO L225 Difference]: With dead ends: 53676 [2021-06-06 00:05:16,066 INFO L226 Difference]: Without dead ends: 53676 [2021-06-06 00:05:16,066 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:05:16,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53676 states. [2021-06-06 00:05:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53676 to 49544. [2021-06-06 00:05:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49544 states, 49543 states have (on average 3.878872898290374) internal successors, (192171), 49543 states have internal predecessors, (192171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49544 states to 49544 states and 192171 transitions. [2021-06-06 00:05:17,238 INFO L78 Accepts]: Start accepts. Automaton has 49544 states and 192171 transitions. Word has length 28 [2021-06-06 00:05:17,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:17,238 INFO L482 AbstractCegarLoop]: Abstraction has 49544 states and 192171 transitions. [2021-06-06 00:05:17,239 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) [2021-06-06 00:05:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 49544 states and 192171 transitions. [2021-06-06 00:05:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:17,308 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:17,309 INFO L554 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] [2021-06-06 00:05:17,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4088 [2021-06-06 00:05:17,509 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:17,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:17,509 INFO L82 PathProgramCache]: Analyzing trace with hash -22913030, now seen corresponding path program 171 times [2021-06-06 00:05:17,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:17,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603896659] [2021-06-06 00:05:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:17,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:17,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603896659] [2021-06-06 00:05:17,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603896659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:17,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424285474] [2021-06-06 00:05:17,547 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 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 [2021-06-06 00:05:17,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:05:17,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:17,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-06 00:05:17,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:17,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424285474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:17,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:17,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-06 00:05:17,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209103454] [2021-06-06 00:05:17,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:05:17,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:17,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:05:17,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:05:17,661 INFO L87 Difference]: Start difference. First operand 49544 states and 192171 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 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) [2021-06-06 00:05:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:18,226 INFO L93 Difference]: Finished difference Result 52408 states and 201958 transitions. [2021-06-06 00:05:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:05:18,227 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 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 [2021-06-06 00:05:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:18,360 INFO L225 Difference]: With dead ends: 52408 [2021-06-06 00:05:18,360 INFO L226 Difference]: Without dead ends: 52408 [2021-06-06 00:05:18,361 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 241.4ms TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:05:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52408 states. [2021-06-06 00:05:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52408 to 49552. [2021-06-06 00:05:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49552 states, 49551 states have (on average 3.8787310044196888) internal successors, (192195), 49551 states have internal predecessors, (192195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49552 states to 49552 states and 192195 transitions. [2021-06-06 00:05:19,581 INFO L78 Accepts]: Start accepts. Automaton has 49552 states and 192195 transitions. Word has length 28 [2021-06-06 00:05:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:19,581 INFO L482 AbstractCegarLoop]: Abstraction has 49552 states and 192195 transitions. [2021-06-06 00:05:19,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 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) [2021-06-06 00:05:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 49552 states and 192195 transitions. [2021-06-06 00:05:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:05:19,908 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:19,908 INFO L554 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] [2021-06-06 00:05:20,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4089,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:20,124 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -120181494, now seen corresponding path program 172 times [2021-06-06 00:05:20,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:20,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710948251] [2021-06-06 00:05:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:20,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:20,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710948251] [2021-06-06 00:05:20,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710948251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:20,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268969431] [2021-06-06 00:05:20,160 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 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 [2021-06-06 00:05:20,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:05:20,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:20,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:05:20,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:20,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268969431] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:20,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:20,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:05:20,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835250948] [2021-06-06 00:05:20,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:05:20,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:05:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:05:20,244 INFO L87 Difference]: Start difference. First operand 49552 states and 192195 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) [2021-06-06 00:05:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:20,681 INFO L93 Difference]: Finished difference Result 51100 states and 197405 transitions. [2021-06-06 00:05:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:05:20,681 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 [2021-06-06 00:05:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:20,803 INFO L225 Difference]: With dead ends: 51100 [2021-06-06 00:05:20,803 INFO L226 Difference]: Without dead ends: 51100 [2021-06-06 00:05:20,803 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:05:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51100 states. [2021-06-06 00:05:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51100 to 49446. [2021-06-06 00:05:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49446 states, 49445 states have (on average 3.878471028415411) internal successors, (191771), 49445 states have internal predecessors, (191771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49446 states to 49446 states and 191771 transitions. [2021-06-06 00:05:21,880 INFO L78 Accepts]: Start accepts. Automaton has 49446 states and 191771 transitions. Word has length 28 [2021-06-06 00:05:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:21,880 INFO L482 AbstractCegarLoop]: Abstraction has 49446 states and 191771 transitions. [2021-06-06 00:05:21,880 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) [2021-06-06 00:05:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 49446 states and 191771 transitions. [2021-06-06 00:05:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:05:21,949 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:21,949 INFO L554 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] [2021-06-06 00:05:22,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4090,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:22,149 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:22,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash -915745990, now seen corresponding path program 173 times [2021-06-06 00:05:22,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:22,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327598757] [2021-06-06 00:05:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:22,513 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-06-06 00:05:22,650 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-06-06 00:05:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:23,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:23,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327598757] [2021-06-06 00:05:23,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327598757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:23,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831523617] [2021-06-06 00:05:23,001 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 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 [2021-06-06 00:05:23,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:05:23,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:23,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-06 00:05:23,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:23,318 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-06 00:05:23,544 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-06 00:05:23,762 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:05:24,293 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2021-06-06 00:05:24,525 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:05:24,732 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-06 00:05:24,967 INFO L446 ElimStorePlain]: Different costs {5=[v_prenex_558, A, v_prenex_560, v_prenex_562, v_prenex_564, v_prenex_566], 6=[v_prenex_554, v_prenex_556]} [2021-06-06 00:05:24,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:24,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:24,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:24,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:24,981 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-06-06 00:05:24,982 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:24,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:24,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:24,991 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 [2021-06-06 00:05:24,992 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:25,588 WARN L205 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 143 [2021-06-06 00:05:25,588 INFO L628 ElimStorePlain]: treesize reduction 280, result has 60.3 percent of original size [2021-06-06 00:05:25,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:25,597 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 [2021-06-06 00:05:25,598 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:25,777 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-06 00:05:25,778 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:25,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:25,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:25,789 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 [2021-06-06 00:05:25,790 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:25,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,797 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 [2021-06-06 00:05:25,798 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:25,955 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-06 00:05:25,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:25,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,965 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 [2021-06-06 00:05:25,967 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:25,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:25,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:25,974 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 [2021-06-06 00:05:25,975 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:26,111 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:05:26,111 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:26,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:26,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,119 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 [2021-06-06 00:05:26,120 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:26,247 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:05:26,247 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:26,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:26,255 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 [2021-06-06 00:05:26,256 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:26,375 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:05:26,375 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:26,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:26,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,385 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 [2021-06-06 00:05:26,386 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:26,498 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:05:26,498 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:26,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:26,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-06-06 00:05:26,506 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:26,612 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:05:26,612 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:26,617 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-06 00:05:26,617 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 24 variables, input treesize:757, output treesize:114 [2021-06-06 00:05:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:26,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831523617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:26,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:26,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:05:26,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397808201] [2021-06-06 00:05:26,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:05:26,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:26,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:05:26,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:05:26,709 INFO L87 Difference]: Start difference. First operand 49446 states and 191771 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) [2021-06-06 00:05:27,107 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2021-06-06 00:05:27,471 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2021-06-06 00:05:28,077 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 79 [2021-06-06 00:05:28,401 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 66 [2021-06-06 00:05:28,747 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2021-06-06 00:05:29,280 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2021-06-06 00:05:29,874 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 84 [2021-06-06 00:05:30,117 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2021-06-06 00:05:30,296 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-06 00:05:30,809 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 96 [2021-06-06 00:05:31,254 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2021-06-06 00:05:31,734 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 112 [2021-06-06 00:05:32,756 WARN L205 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 153 [2021-06-06 00:05:33,176 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-06 00:05:33,576 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 102 [2021-06-06 00:05:33,933 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2021-06-06 00:05:34,405 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2021-06-06 00:05:34,756 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2021-06-06 00:05:35,066 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 56 [2021-06-06 00:05:35,492 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 46 [2021-06-06 00:05:35,665 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 42 [2021-06-06 00:05:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:35,889 INFO L93 Difference]: Finished difference Result 57718 states and 215952 transitions. [2021-06-06 00:05:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:05:35,890 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 [2021-06-06 00:05:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:36,026 INFO L225 Difference]: With dead ends: 57718 [2021-06-06 00:05:36,027 INFO L226 Difference]: Without dead ends: 57628 [2021-06-06 00:05:36,027 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 10047.2ms TimeCoverageRelationStatistics Valid=458, Invalid=1992, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:05:36,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57628 states. [2021-06-06 00:05:36,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57628 to 49581. [2021-06-06 00:05:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49581 states, 49580 states have (on average 3.8776926179911255) internal successors, (192256), 49580 states have internal predecessors, (192256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49581 states to 49581 states and 192256 transitions. [2021-06-06 00:05:37,092 INFO L78 Accepts]: Start accepts. Automaton has 49581 states and 192256 transitions. Word has length 30 [2021-06-06 00:05:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:37,092 INFO L482 AbstractCegarLoop]: Abstraction has 49581 states and 192256 transitions. [2021-06-06 00:05:37,092 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) [2021-06-06 00:05:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 49581 states and 192256 transitions. [2021-06-06 00:05:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:05:37,161 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:37,162 INFO L554 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] [2021-06-06 00:05:37,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4091,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:05:37,362 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:37,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1350823290, now seen corresponding path program 174 times [2021-06-06 00:05:37,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:37,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653203407] [2021-06-06 00:05:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:37,686 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-06-06 00:05:37,855 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-06 00:05:38,163 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-06 00:05:38,279 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-06 00:05:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:38,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:38,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653203407] [2021-06-06 00:05:38,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653203407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:38,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739278484] [2021-06-06 00:05:38,484 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 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 [2021-06-06 00:05:38,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:05:38,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:05:38,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-06 00:05:38,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:38,854 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-06 00:05:39,072 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:05:39,607 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2021-06-06 00:05:39,824 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:05:40,569 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 131 [2021-06-06 00:05:40,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:40,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:40,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:40,667 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 [2021-06-06 00:05:40,668 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:41,059 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 155 [2021-06-06 00:05:41,059 INFO L628 ElimStorePlain]: treesize reduction 86, result has 82.7 percent of original size [2021-06-06 00:05:41,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:41,068 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 [2021-06-06 00:05:41,069 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:41,236 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-06 00:05:41,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:41,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:41,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:05:41,246 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:41,405 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-06 00:05:41,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:41,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:41,414 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 [2021-06-06 00:05:41,414 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:41,566 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-06 00:05:41,567 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:41,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,574 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 [2021-06-06 00:05:41,576 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:41,716 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:05:41,716 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:41,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,724 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 [2021-06-06 00:05:41,725 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:41,854 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-06 00:05:41,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:41,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:41,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:05:41,862 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:41,984 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:05:41,984 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:41,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:41,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:41,991 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 [2021-06-06 00:05:41,992 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:42,106 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-06 00:05:42,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:42,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:42,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:42,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:42,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:42,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:05:42,117 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:42,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:42,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:42,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:42,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:05:42,125 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:42,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:05:42,227 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 9 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-06 00:05:42,227 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 27 variables, input treesize:525, output treesize:114 [2021-06-06 00:05:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:42,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739278484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:42,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:42,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:05:42,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825661100] [2021-06-06 00:05:42,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:05:42,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:42,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:05:42,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:05:42,328 INFO L87 Difference]: Start difference. First operand 49581 states and 192256 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) [2021-06-06 00:05:42,777 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 44 [2021-06-06 00:05:43,282 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-06 00:05:43,577 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2021-06-06 00:05:43,829 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2021-06-06 00:05:44,695 WARN L205 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 89 [2021-06-06 00:05:45,387 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-06-06 00:05:45,532 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-06-06 00:05:46,310 WARN L205 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 93 [2021-06-06 00:05:46,657 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:05:47,136 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 102 [2021-06-06 00:05:47,347 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-06-06 00:05:47,658 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-06 00:05:47,997 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2021-06-06 00:05:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:05:48,379 INFO L93 Difference]: Finished difference Result 52816 states and 201749 transitions. [2021-06-06 00:05:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:05:48,380 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 [2021-06-06 00:05:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:05:48,515 INFO L225 Difference]: With dead ends: 52816 [2021-06-06 00:05:48,515 INFO L226 Difference]: Without dead ends: 52771 [2021-06-06 00:05:48,515 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 7414.1ms TimeCoverageRelationStatistics Valid=322, Invalid=1748, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:05:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52771 states. [2021-06-06 00:05:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52771 to 49618. [2021-06-06 00:05:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49618 states, 49617 states have (on average 3.877360582058569) internal successors, (192383), 49617 states have internal predecessors, (192383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:05:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49618 states to 49618 states and 192383 transitions. [2021-06-06 00:05:49,494 INFO L78 Accepts]: Start accepts. Automaton has 49618 states and 192383 transitions. Word has length 30 [2021-06-06 00:05:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:05:49,494 INFO L482 AbstractCegarLoop]: Abstraction has 49618 states and 192383 transitions. [2021-06-06 00:05:49,494 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) [2021-06-06 00:05:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 49618 states and 192383 transitions. [2021-06-06 00:05:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:05:49,567 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:05:49,567 INFO L554 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] [2021-06-06 00:05:49,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4132 [2021-06-06 00:05:49,769 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:05:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:05:49,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1352714698, now seen corresponding path program 175 times [2021-06-06 00:05:49,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:05:49,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530965930] [2021-06-06 00:05:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:05:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:50,318 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2021-06-06 00:05:50,594 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2021-06-06 00:05:50,984 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-06-06 00:05:51,234 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2021-06-06 00:05:51,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:51,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:05:51,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530965930] [2021-06-06 00:05:51,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530965930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:51,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999916309] [2021-06-06 00:05:51,363 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 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 [2021-06-06 00:05:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:05:51,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:05:51,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:05:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,671 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 [2021-06-06 00:05:52,671 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,684 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 [2021-06-06 00:05:52,684 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,697 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 [2021-06-06 00:05:52,698 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,711 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 [2021-06-06 00:05:52,711 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,724 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 [2021-06-06 00:05:52,725 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,738 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 [2021-06-06 00:05:52,738 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,751 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 [2021-06-06 00:05:52,752 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,766 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 [2021-06-06 00:05:52,766 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,780 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 44 treesize of output 19 [2021-06-06 00:05:52,780 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,793 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 [2021-06-06 00:05:52,794 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,808 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 [2021-06-06 00:05:52,809 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,822 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 [2021-06-06 00:05:52,823 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,836 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 [2021-06-06 00:05:52,837 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,850 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 47 treesize of output 25 [2021-06-06 00:05:52,850 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,864 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 [2021-06-06 00:05:52,864 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,877 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 [2021-06-06 00:05:52,878 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,891 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 [2021-06-06 00:05:52,891 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,904 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 [2021-06-06 00:05:52,905 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,918 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 [2021-06-06 00:05:52,918 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,931 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 38 treesize of output 16 [2021-06-06 00:05:52,932 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,946 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 45 treesize of output 25 [2021-06-06 00:05:52,947 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,959 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 [2021-06-06 00:05:52,960 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,973 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 [2021-06-06 00:05:52,974 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,989 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 [2021-06-06 00:05:52,990 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:52,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:52,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,004 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 [2021-06-06 00:05:53,004 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,018 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 [2021-06-06 00:05:53,018 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,031 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 [2021-06-06 00:05:53,032 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,045 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 [2021-06-06 00:05:53,046 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,059 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 [2021-06-06 00:05:53,060 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,073 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 [2021-06-06 00:05:53,074 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,086 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 [2021-06-06 00:05:53,087 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 [2021-06-06 00:05:53,101 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,114 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 [2021-06-06 00:05:53,115 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,128 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 [2021-06-06 00:05:53,128 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,142 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 [2021-06-06 00:05:53,143 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,156 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 54 treesize of output 22 [2021-06-06 00:05:53,157 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,170 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 [2021-06-06 00:05:53,171 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,184 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 [2021-06-06 00:05:53,184 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,197 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 [2021-06-06 00:05:53,198 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,210 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 [2021-06-06 00:05:53,211 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,224 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 [2021-06-06 00:05:53,225 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,237 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 [2021-06-06 00:05:53,238 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,251 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 [2021-06-06 00:05:53,252 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,264 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 [2021-06-06 00:05:53,265 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,278 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 [2021-06-06 00:05:53,278 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,291 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 [2021-06-06 00:05:53,291 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,304 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 [2021-06-06 00:05:53,305 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,318 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 [2021-06-06 00:05:53,318 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,331 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 [2021-06-06 00:05:53,331 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,344 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 [2021-06-06 00:05:53,344 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,357 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 [2021-06-06 00:05:53,357 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,369 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 [2021-06-06 00:05:53,370 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,382 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 [2021-06-06 00:05:53,384 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,399 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 [2021-06-06 00:05:53,400 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,415 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 [2021-06-06 00:05:53,416 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,431 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 [2021-06-06 00:05:53,431 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,446 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 [2021-06-06 00:05:53,447 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,461 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 [2021-06-06 00:05:53,461 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,475 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 [2021-06-06 00:05:53,476 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,490 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 [2021-06-06 00:05:53,491 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,503 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 [2021-06-06 00:05:53,504 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,515 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 51 treesize of output 25 [2021-06-06 00:05:53,515 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:05:53,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:05:53,522 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 [2021-06-06 00:05:53,523 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:05:53,610 INFO L628 ElimStorePlain]: treesize reduction 160, result has 31.9 percent of original size [2021-06-06 00:05:53,611 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:05:53,611 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-06 00:05:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:05:53,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999916309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:05:53,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:05:53,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-06 00:05:53,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816550962] [2021-06-06 00:05:53,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:05:53,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:05:53,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:05:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:05:53,670 INFO L87 Difference]: Start difference. First operand 49618 states and 192383 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) [2021-06-06 00:05:54,865 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 81 [2021-06-06 00:05:55,257 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 73 [2021-06-06 00:05:55,722 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 80 [2021-06-06 00:05:56,393 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 81 [2021-06-06 00:05:56,871 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 106 [2021-06-06 00:05:57,171 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 89 [2021-06-06 00:05:57,365 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:05:57,624 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 85 [2021-06-06 00:05:57,804 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-06 00:05:58,154 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 81 [2021-06-06 00:05:58,318 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-06-06 00:05:58,718 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 88 [2021-06-06 00:05:58,949 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-06-06 00:05:59,301 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 84 [2021-06-06 00:05:59,552 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 84 [2021-06-06 00:05:59,971 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 99 [2021-06-06 00:06:00,219 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-06 00:06:00,410 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2021-06-06 00:06:00,727 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 00:06:01,075 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 85 [2021-06-06 00:06:01,258 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-06-06 00:06:01,632 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-06-06 00:06:01,867 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 70 [2021-06-06 00:06:02,167 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2021-06-06 00:06:02,426 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-06-06 00:06:02,714 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-06-06 00:06:03,014 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-06 00:06:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:03,354 INFO L93 Difference]: Finished difference Result 70379 states and 263440 transitions. [2021-06-06 00:06:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-06 00:06:03,354 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 [2021-06-06 00:06:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:03,526 INFO L225 Difference]: With dead ends: 70379 [2021-06-06 00:06:03,526 INFO L226 Difference]: Without dead ends: 70349 [2021-06-06 00:06:03,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 10141.6ms TimeCoverageRelationStatistics Valid=537, Invalid=3623, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:06:03,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70349 states. [2021-06-06 00:06:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70349 to 49657. [2021-06-06 00:06:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49657 states, 49656 states have (on average 3.877094409537619) internal successors, (192521), 49656 states have internal predecessors, (192521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49657 states to 49657 states and 192521 transitions. [2021-06-06 00:06:04,656 INFO L78 Accepts]: Start accepts. Automaton has 49657 states and 192521 transitions. Word has length 30 [2021-06-06 00:06:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:04,656 INFO L482 AbstractCegarLoop]: Abstraction has 49657 states and 192521 transitions. [2021-06-06 00:06:04,656 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) [2021-06-06 00:06:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 49657 states and 192521 transitions. [2021-06-06 00:06:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:06:04,727 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:04,727 INFO L554 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] [2021-06-06 00:06:04,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4169,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:06:04,927 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash -547667522, now seen corresponding path program 176 times [2021-06-06 00:06:04,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:04,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834592145] [2021-06-06 00:06:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:05,143 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-06-06 00:06:05,320 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-06 00:06:05,493 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-06 00:06:05,634 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-06 00:06:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:05,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:05,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834592145] [2021-06-06 00:06:05,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834592145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:05,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801722750] [2021-06-06 00:06:05,895 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 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 [2021-06-06 00:06:05,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:06:05,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:05,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-06 00:06:05,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:06,244 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-06 00:06:06,440 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-06 00:06:06,906 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-06 00:06:07,377 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-06 00:06:07,721 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:07,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:07,732 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:08,612 WARN L205 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 338 [2021-06-06 00:06:08,612 INFO L628 ElimStorePlain]: treesize reduction 28, result has 96.9 percent of original size [2021-06-06 00:06:08,756 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-06-06 00:06:08,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:08,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:08,775 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:09,183 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2021-06-06 00:06:09,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:09,238 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:06:09,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:09,242 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:09,656 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2021-06-06 00:06:09,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:09,716 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:06:09,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:09,720 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:10,113 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2021-06-06 00:06:10,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:10,172 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:06:10,173 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 50 [2021-06-06 00:06:10,174 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:10,559 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2021-06-06 00:06:10,559 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:10,615 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:06:10,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:06:10,617 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:11,002 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2021-06-06 00:06:11,003 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:11,063 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:06:11,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:11,066 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:11,459 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2021-06-06 00:06:11,459 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:11,523 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:06:11,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:06:11,543 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:12,342 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 318 [2021-06-06 00:06:12,343 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.9 percent of original size [2021-06-06 00:06:12,406 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:06:12,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:12,414 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:13,195 WARN L205 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 315 [2021-06-06 00:06:13,195 INFO L628 ElimStorePlain]: treesize reduction 24, result has 97.1 percent of original size [2021-06-06 00:06:13,259 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:06:13,259 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 [2021-06-06 00:06:13,268 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:14,059 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 309 [2021-06-06 00:06:14,060 INFO L628 ElimStorePlain]: treesize reduction 32, result has 96.1 percent of original size [2021-06-06 00:06:14,122 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:06:14,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:14,124 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:14,515 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2021-06-06 00:06:14,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:14,580 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:06:14,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:06:14,599 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:15,359 WARN L205 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 301 [2021-06-06 00:06:15,360 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.8 percent of original size [2021-06-06 00:06:15,408 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-06 00:06:15,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:15,410 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:15,786 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2021-06-06 00:06:15,787 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:15,829 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:15,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:15,840 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:16,593 WARN L205 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 297 [2021-06-06 00:06:16,593 INFO L628 ElimStorePlain]: treesize reduction 25, result has 96.8 percent of original size [2021-06-06 00:06:16,646 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:06:16,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:16,652 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:17,018 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2021-06-06 00:06:17,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:17,069 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:06:17,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:17,074 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:17,435 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2021-06-06 00:06:17,435 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:17,535 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-06-06 00:06:17,535 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 48 variables, input treesize:877, output treesize:1238 [2021-06-06 00:06:18,077 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 48 [2021-06-06 00:06:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:18,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801722750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:18,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:18,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-06 00:06:18,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009236549] [2021-06-06 00:06:18,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:06:18,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:18,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:06:18,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:06:18,194 INFO L87 Difference]: Start difference. First operand 49657 states and 192521 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) [2021-06-06 00:06:18,384 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36 [2021-06-06 00:06:18,729 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 47 [2021-06-06 00:06:19,319 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 86 [2021-06-06 00:06:19,719 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2021-06-06 00:06:19,898 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2021-06-06 00:06:20,226 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2021-06-06 00:06:20,527 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 57 [2021-06-06 00:06:20,796 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 55 [2021-06-06 00:06:21,196 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2021-06-06 00:06:21,660 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 89 [2021-06-06 00:06:21,967 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 56 [2021-06-06 00:06:22,129 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-06 00:06:22,325 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 58 [2021-06-06 00:06:23,146 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 113 [2021-06-06 00:06:23,871 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 76 [2021-06-06 00:06:24,266 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 89 [2021-06-06 00:06:25,187 WARN L205 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 103 [2021-06-06 00:06:25,582 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2021-06-06 00:06:26,381 WARN L205 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 153 [2021-06-06 00:06:26,625 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 74 [2021-06-06 00:06:26,969 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-06-06 00:06:27,896 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 157 [2021-06-06 00:06:28,666 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 141 [2021-06-06 00:06:29,284 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2021-06-06 00:06:29,639 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2021-06-06 00:06:30,482 WARN L205 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2021-06-06 00:06:31,051 WARN L205 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2021-06-06 00:06:31,900 WARN L205 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 120 [2021-06-06 00:06:33,448 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 215 DAG size of output: 160 [2021-06-06 00:06:33,831 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2021-06-06 00:06:34,329 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 59 [2021-06-06 00:06:34,751 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2021-06-06 00:06:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:06:34,961 INFO L93 Difference]: Finished difference Result 63922 states and 240994 transitions. [2021-06-06 00:06:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:06:34,962 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 [2021-06-06 00:06:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:06:35,114 INFO L225 Difference]: With dead ends: 63922 [2021-06-06 00:06:35,114 INFO L226 Difference]: Without dead ends: 63892 [2021-06-06 00:06:35,115 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 17717.6ms TimeCoverageRelationStatistics Valid=636, Invalid=3524, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:06:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63892 states. [2021-06-06 00:06:36,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63892 to 49681. [2021-06-06 00:06:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49681 states, 49680 states have (on average 3.8768719806763285) internal successors, (192603), 49680 states have internal predecessors, (192603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:06:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49681 states to 49681 states and 192603 transitions. [2021-06-06 00:06:36,240 INFO L78 Accepts]: Start accepts. Automaton has 49681 states and 192603 transitions. Word has length 30 [2021-06-06 00:06:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:06:36,240 INFO L482 AbstractCegarLoop]: Abstraction has 49681 states and 192603 transitions. [2021-06-06 00:06:36,240 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) [2021-06-06 00:06:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 49681 states and 192603 transitions. [2021-06-06 00:06:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:06:36,309 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:06:36,309 INFO L554 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] [2021-06-06 00:06:36,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4430 [2021-06-06 00:06:36,510 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:06:36,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:06:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1002714042, now seen corresponding path program 177 times [2021-06-06 00:06:36,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:06:36,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823992245] [2021-06-06 00:06:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:06:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:06:37,106 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-06-06 00:06:37,357 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-06-06 00:06:37,637 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-06-06 00:06:37,817 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-06 00:06:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:38,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:06:38,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823992245] [2021-06-06 00:06:38,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823992245] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:38,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677219830] [2021-06-06 00:06:38,014 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 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 [2021-06-06 00:06:38,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:06:38,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:06:38,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-06 00:06:38,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:06:38,396 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-06 00:06:38,611 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:06:38,909 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:06:39,377 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-06 00:06:39,859 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-06 00:06:40,390 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 185 [2021-06-06 00:06:40,919 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-06-06 00:06:41,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,243 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-06 00:06:41,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:06:41,252 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,328 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:41,328 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 [2021-06-06 00:06:41,330 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,398 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:06:41,398 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-06-06 00:06:41,400 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,463 INFO L354 Elim1Store]: treesize reduction 12, result has 76.5 percent of original size [2021-06-06 00:06:41,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 54 [2021-06-06 00:06:41,467 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,553 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-06 00:06:41,553 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 64 [2021-06-06 00:06:41,561 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,633 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:41,633 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 51 treesize of output 59 [2021-06-06 00:06:41,637 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,711 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:06:41,711 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 51 treesize of output 55 [2021-06-06 00:06:41,712 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,788 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:06:41,788 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 [2021-06-06 00:06:41,790 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:41,870 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:41,870 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 [2021-06-06 00:06:41,875 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:41,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:41,939 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:41,940 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 42 treesize of output 56 [2021-06-06 00:06:41,942 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:43,660 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 354 DAG size of output: 326 [2021-06-06 00:06:43,661 INFO L628 ElimStorePlain]: treesize reduction 97, result has 91.9 percent of original size [2021-06-06 00:06:43,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:43,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:43,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 42 treesize of output 68 [2021-06-06 00:06:43,740 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:43,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:43,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,807 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:43,807 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 42 treesize of output 68 [2021-06-06 00:06:43,823 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:43,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:43,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,894 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:43,894 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 35 treesize of output 53 [2021-06-06 00:06:43,900 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:43,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:43,984 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:43,984 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 42 treesize of output 56 [2021-06-06 00:06:43,988 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:44,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:44,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:44,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:44,066 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:44,066 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 42 treesize of output 56 [2021-06-06 00:06:44,070 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:44,137 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:06:44,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:06:44,145 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:44,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:44,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:44,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:06:44,195 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:44,195 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 35 treesize of output 65 [2021-06-06 00:06:44,217 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:44,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:44,274 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:06:44,274 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 63 [2021-06-06 00:06:44,295 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:44,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:44,360 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:06:44,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:44,364 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:44,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:06:44,427 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-06 00:06:44,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-06 00:06:44,445 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:06:45,419 WARN L205 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 294 [2021-06-06 00:06:45,420 INFO L628 ElimStorePlain]: treesize reduction 250, result has 78.3 percent of original size [2021-06-06 00:06:45,475 INFO L550 ElimStorePlain]: Start of recursive call 1: 36 dim-0 vars, 2 dim-1 vars, End of recursive call: and 20 xjuncts. [2021-06-06 00:06:45,475 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 38 variables, input treesize:1193, output treesize:1265 [2021-06-06 00:06:46,055 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2021-06-06 00:06:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:06:46,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677219830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:06:46,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:06:46,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-06 00:06:46,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681236064] [2021-06-06 00:06:46,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-06 00:06:46,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:06:46,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-06 00:06:46,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-06-06 00:06:46,140 INFO L87 Difference]: Start difference. First operand 49681 states and 192603 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) [2021-06-06 00:06:47,248 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-06 00:06:48,517 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 94 [2021-06-06 00:06:49,235 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 73 [2021-06-06 00:06:49,512 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2021-06-06 00:06:50,370 WARN L205 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 91 [2021-06-06 00:06:51,002 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 141 [2021-06-06 00:06:51,233 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 48 [2021-06-06 00:06:51,380 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2021-06-06 00:06:51,542 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 53 [2021-06-06 00:06:52,400 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 105 [2021-06-06 00:06:52,662 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:06:53,307 WARN L205 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 97 [2021-06-06 00:06:53,657 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2021-06-06 00:06:54,728 WARN L205 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 102 [2021-06-06 00:06:55,410 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 140 [2021-06-06 00:06:56,190 WARN L205 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 152 [2021-06-06 00:06:56,478 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-06-06 00:06:57,362 WARN L205 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 94 [2021-06-06 00:06:58,053 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 144 [2021-06-06 00:06:58,806 WARN L205 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 148 [2021-06-06 00:06:59,491 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2021-06-06 00:06:59,953 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 111 [2021-06-06 00:07:00,162 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-06-06 00:07:00,390 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:07:01,336 WARN L205 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 116 [2021-06-06 00:07:02,102 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 143 [2021-06-06 00:07:03,103 WARN L205 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 147 [2021-06-06 00:07:03,509 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 96 [2021-06-06 00:07:04,034 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 122 [2021-06-06 00:07:04,300 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-06-06 00:07:04,817 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 115 [2021-06-06 00:07:05,973 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2021-06-06 00:07:06,905 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2021-06-06 00:07:07,571 WARN L205 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 140 [2021-06-06 00:07:08,286 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 132 [2021-06-06 00:07:09,044 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 141 [2021-06-06 00:07:09,361 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 31 [2021-06-06 00:07:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:09,602 INFO L93 Difference]: Finished difference Result 70546 states and 263970 transitions. [2021-06-06 00:07:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:07:09,602 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 [2021-06-06 00:07:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:09,770 INFO L225 Difference]: With dead ends: 70546 [2021-06-06 00:07:09,770 INFO L226 Difference]: Without dead ends: 70516 [2021-06-06 00:07:09,770 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 24366.2ms TimeCoverageRelationStatistics Valid=706, Invalid=5456, Unknown=0, NotChecked=0, Total=6162 [2021-06-06 00:07:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70516 states. [2021-06-06 00:07:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70516 to 49693. [2021-06-06 00:07:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49693 states, 49692 states have (on average 3.8769419624889316) internal successors, (192653), 49692 states have internal predecessors, (192653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49693 states to 49693 states and 192653 transitions. [2021-06-06 00:07:10,925 INFO L78 Accepts]: Start accepts. Automaton has 49693 states and 192653 transitions. Word has length 30 [2021-06-06 00:07:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:10,926 INFO L482 AbstractCegarLoop]: Abstraction has 49693 states and 192653 transitions. [2021-06-06 00:07:10,926 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) [2021-06-06 00:07:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 49693 states and 192653 transitions. [2021-06-06 00:07:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:07:10,995 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:10,995 INFO L554 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] [2021-06-06 00:07:11,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4572,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:11,196 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:11,196 INFO L82 PathProgramCache]: Analyzing trace with hash 26395198, now seen corresponding path program 178 times [2021-06-06 00:07:11,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:11,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135956824] [2021-06-06 00:07:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:11,800 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-06-06 00:07:11,977 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-06-06 00:07:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:12,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:12,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135956824] [2021-06-06 00:07:12,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135956824] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:12,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606538419] [2021-06-06 00:07:12,294 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 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 [2021-06-06 00:07:12,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:07:12,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:12,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:07:12,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:13,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,490 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 [2021-06-06 00:07:13,491 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,503 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 [2021-06-06 00:07:13,504 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,516 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 53 treesize of output 25 [2021-06-06 00:07:13,517 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,530 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 [2021-06-06 00:07:13,530 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,544 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 [2021-06-06 00:07:13,545 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,558 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 [2021-06-06 00:07:13,559 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,573 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 45 treesize of output 25 [2021-06-06 00:07:13,573 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,587 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 [2021-06-06 00:07:13,588 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,602 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 [2021-06-06 00:07:13,602 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 [2021-06-06 00:07:13,615 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,629 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 [2021-06-06 00:07:13,630 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,644 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 [2021-06-06 00:07:13,644 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,658 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 [2021-06-06 00:07:13,659 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,672 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 42 treesize of output 22 [2021-06-06 00:07:13,672 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,686 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 [2021-06-06 00:07:13,687 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,700 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 [2021-06-06 00:07:13,701 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,715 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 [2021-06-06 00:07:13,715 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,729 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 [2021-06-06 00:07:13,729 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,743 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 [2021-06-06 00:07:13,743 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,758 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 [2021-06-06 00:07:13,759 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,773 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 [2021-06-06 00:07:13,774 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,787 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 [2021-06-06 00:07:13,788 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,801 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 [2021-06-06 00:07:13,802 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,815 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 [2021-06-06 00:07:13,815 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,829 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 [2021-06-06 00:07:13,829 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,842 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 [2021-06-06 00:07:13,843 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,857 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 [2021-06-06 00:07:13,858 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,871 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 46 treesize of output 16 [2021-06-06 00:07:13,872 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,886 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 [2021-06-06 00:07:13,886 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,900 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 [2021-06-06 00:07:13,900 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,914 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 [2021-06-06 00:07:13,915 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,928 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 [2021-06-06 00:07:13,929 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,942 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 [2021-06-06 00:07:13,942 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,955 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 [2021-06-06 00:07:13,955 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,968 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 [2021-06-06 00:07:13,969 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,982 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 [2021-06-06 00:07:13,982 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:13,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:13,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:13,995 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 [2021-06-06 00:07:13,997 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,010 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 [2021-06-06 00:07:14,011 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,025 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 51 treesize of output 25 [2021-06-06 00:07:14,026 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,041 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 [2021-06-06 00:07:14,042 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,056 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 [2021-06-06 00:07:14,057 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,070 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 [2021-06-06 00:07:14,071 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,084 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 [2021-06-06 00:07:14,085 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,098 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 [2021-06-06 00:07:14,113 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,127 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 [2021-06-06 00:07:14,128 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,142 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 [2021-06-06 00:07:14,142 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,155 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 50 treesize of output 28 [2021-06-06 00:07:14,156 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,168 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 [2021-06-06 00:07:14,169 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,181 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 [2021-06-06 00:07:14,182 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,195 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 [2021-06-06 00:07:14,195 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,208 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 [2021-06-06 00:07:14,209 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,222 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 [2021-06-06 00:07:14,222 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,235 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 44 treesize of output 19 [2021-06-06 00:07:14,235 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,248 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 [2021-06-06 00:07:14,249 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,261 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 [2021-06-06 00:07:14,261 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,273 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 53 treesize of output 25 [2021-06-06 00:07:14,274 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,286 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 [2021-06-06 00:07:14,287 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,299 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 [2021-06-06 00:07:14,300 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,311 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 [2021-06-06 00:07:14,311 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,323 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 54 treesize of output 28 [2021-06-06 00:07:14,323 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,334 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 [2021-06-06 00:07:14,335 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,345 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 [2021-06-06 00:07:14,346 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:14,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:14,352 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 53 treesize of output 22 [2021-06-06 00:07:14,353 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:14,436 INFO L628 ElimStorePlain]: treesize reduction 144, result has 34.2 percent of original size [2021-06-06 00:07:14,437 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:07:14,437 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-06 00:07:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:14,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606538419] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:14,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:14,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:07:14,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730741403] [2021-06-06 00:07:14,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:07:14,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:14,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:07:14,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:07:14,505 INFO L87 Difference]: Start difference. First operand 49693 states and 192653 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) [2021-06-06 00:07:14,744 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2021-06-06 00:07:15,417 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2021-06-06 00:07:15,940 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2021-06-06 00:07:16,361 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2021-06-06 00:07:16,965 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 85 [2021-06-06 00:07:17,597 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2021-06-06 00:07:18,187 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2021-06-06 00:07:18,635 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2021-06-06 00:07:19,175 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 86 [2021-06-06 00:07:19,352 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-06 00:07:20,027 WARN L205 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-06 00:07:20,639 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 98 [2021-06-06 00:07:20,984 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2021-06-06 00:07:21,333 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 78 [2021-06-06 00:07:22,076 WARN L205 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 113 [2021-06-06 00:07:22,664 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2021-06-06 00:07:23,014 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2021-06-06 00:07:23,486 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 97 [2021-06-06 00:07:23,748 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-06-06 00:07:24,308 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 116 [2021-06-06 00:07:24,481 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2021-06-06 00:07:24,928 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2021-06-06 00:07:25,642 WARN L205 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 108 [2021-06-06 00:07:26,248 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2021-06-06 00:07:26,925 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2021-06-06 00:07:27,531 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 107 [2021-06-06 00:07:27,727 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-06 00:07:27,981 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2021-06-06 00:07:28,316 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 72 [2021-06-06 00:07:28,790 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2021-06-06 00:07:29,547 WARN L205 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 110 [2021-06-06 00:07:30,379 WARN L205 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 114 [2021-06-06 00:07:30,543 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:07:30,763 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2021-06-06 00:07:30,906 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-06-06 00:07:31,400 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2021-06-06 00:07:32,133 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2021-06-06 00:07:32,360 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-06 00:07:32,561 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-06-06 00:07:32,934 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2021-06-06 00:07:33,151 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 51 [2021-06-06 00:07:33,516 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2021-06-06 00:07:33,742 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 50 [2021-06-06 00:07:33,895 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 44 [2021-06-06 00:07:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:34,228 INFO L93 Difference]: Finished difference Result 83003 states and 307937 transitions. [2021-06-06 00:07:34,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-06 00:07:34,228 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 [2021-06-06 00:07:34,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:34,548 INFO L225 Difference]: With dead ends: 83003 [2021-06-06 00:07:34,549 INFO L226 Difference]: Without dead ends: 82973 [2021-06-06 00:07:34,549 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2407 ImplicationChecksByTransitivity, 19168.0ms TimeCoverageRelationStatistics Valid=806, Invalid=6504, Unknown=0, NotChecked=0, Total=7310 [2021-06-06 00:07:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82973 states. [2021-06-06 00:07:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82973 to 49821. [2021-06-06 00:07:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49821 states, 49820 states have (on average 3.8757727820152548) internal successors, (193091), 49820 states have internal predecessors, (193091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49821 states to 49821 states and 193091 transitions. [2021-06-06 00:07:35,763 INFO L78 Accepts]: Start accepts. Automaton has 49821 states and 193091 transitions. Word has length 30 [2021-06-06 00:07:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:35,763 INFO L482 AbstractCegarLoop]: Abstraction has 49821 states and 193091 transitions. [2021-06-06 00:07:35,763 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) [2021-06-06 00:07:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 49821 states and 193091 transitions. [2021-06-06 00:07:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:07:35,833 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:35,833 INFO L554 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] [2021-06-06 00:07:36,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4713 [2021-06-06 00:07:36,033 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:36,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2016530042, now seen corresponding path program 179 times [2021-06-06 00:07:36,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:36,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628693437] [2021-06-06 00:07:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:36,327 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-06-06 00:07:36,499 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-06-06 00:07:36,661 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-06-06 00:07:36,783 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-06-06 00:07:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:36,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:36,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628693437] [2021-06-06 00:07:36,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628693437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:36,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001120653] [2021-06-06 00:07:36,903 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 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 [2021-06-06 00:07:36,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:07:36,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:36,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-06 00:07:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:37,264 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-06 00:07:37,505 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:07:38,013 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:07:39,065 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 169 [2021-06-06 00:07:39,905 WARN L205 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 117 [2021-06-06 00:07:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:39,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:39,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:39,996 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 [2021-06-06 00:07:39,997 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:40,417 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 154 [2021-06-06 00:07:40,418 INFO L628 ElimStorePlain]: treesize reduction 91, result has 81.7 percent of original size [2021-06-06 00:07:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:40,426 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 [2021-06-06 00:07:40,427 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:40,599 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-06 00:07:40,599 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:40,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:40,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,608 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 [2021-06-06 00:07:40,609 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:40,771 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-06-06 00:07:40,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:40,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:07:40,781 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:40,930 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-06 00:07:40,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:40,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:40,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-06 00:07:40,939 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:41,077 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:07:41,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:41,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:41,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:41,089 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 [2021-06-06 00:07:41,090 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:41,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:41,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,098 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 [2021-06-06 00:07:41,099 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:41,223 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-06 00:07:41,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:41,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,230 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 [2021-06-06 00:07:41,231 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:41,348 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-06 00:07:41,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:41,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:41,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-06 00:07:41,357 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:41,464 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-06 00:07:41,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:41,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:07:41,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:07:41,471 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 [2021-06-06 00:07:41,473 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:41,570 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:41,575 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 9 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:07:41,575 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 27 variables, input treesize:525, output treesize:104 [2021-06-06 00:07:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:41,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001120653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:41,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:41,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:07:41,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624157066] [2021-06-06 00:07:41,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:07:41,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:41,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:07:41,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:07:41,675 INFO L87 Difference]: Start difference. First operand 49821 states and 193091 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) [2021-06-06 00:07:42,076 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 46 [2021-06-06 00:07:42,476 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 90 [2021-06-06 00:07:42,653 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-06-06 00:07:42,881 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2021-06-06 00:07:43,171 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2021-06-06 00:07:43,427 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 66 [2021-06-06 00:07:43,732 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 61 [2021-06-06 00:07:44,129 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 78 [2021-06-06 00:07:44,339 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-06-06 00:07:45,071 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2021-06-06 00:07:45,605 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 81 [2021-06-06 00:07:45,860 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 73 [2021-06-06 00:07:46,756 WARN L205 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 147 [2021-06-06 00:07:47,677 WARN L205 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 139 [2021-06-06 00:07:48,371 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 92 [2021-06-06 00:07:49,778 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 180 DAG size of output: 120 [2021-06-06 00:07:50,002 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-06-06 00:07:50,430 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 87 [2021-06-06 00:07:50,743 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2021-06-06 00:07:51,109 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 00:07:51,259 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-06-06 00:07:52,671 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 168 DAG size of output: 147 Received shutdown request... [2021-06-06 00:07:52,756 WARN L222 SmtUtils]: Removed 2 from assertion stack [2021-06-06 00:07:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-06 00:07:52,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4922,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:52,957 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-06 00:07:52,959 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 00:07:52,960 WARN L196 ceAbstractionStarter]: Timeout [2021-06-06 00:07:52,960 INFO L202 PluginConnector]: Adding new model max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 12:07:52 BasicIcfg [2021-06-06 00:07:52,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 00:07:52,961 INFO L168 Benchmark]: Toolchain (without parser) took 791047.46 ms. Allocated memory was 383.8 MB in the beginning and 15.8 GB in the end (delta: 15.5 GB). Free memory was 362.4 MB in the beginning and 10.4 GB in the end (delta: -10.1 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. [2021-06-06 00:07:52,961 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 383.8 MB. Free memory is still 363.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:07:52,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.17 ms. Allocated memory is still 383.8 MB. Free memory was 362.3 MB in the beginning and 360.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:07:52,961 INFO L168 Benchmark]: Boogie Preprocessor took 15.88 ms. Allocated memory is still 383.8 MB. Free memory was 360.9 MB in the beginning and 359.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 00:07:52,961 INFO L168 Benchmark]: RCFGBuilder took 237.04 ms. Allocated memory is still 383.8 MB. Free memory was 359.8 MB in the beginning and 346.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-06 00:07:52,961 INFO L168 Benchmark]: TraceAbstraction took 790771.37 ms. Allocated memory was 383.8 MB in the beginning and 15.8 GB in the end (delta: 15.5 GB). Free memory was 346.4 MB in the beginning and 10.4 GB in the end (delta: -10.1 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. [2021-06-06 00:07:52,961 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 0.09 ms. Allocated memory is still 383.8 MB. Free memory is still 363.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.17 ms. Allocated memory is still 383.8 MB. Free memory was 362.3 MB in the beginning and 360.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.88 ms. Allocated memory is still 383.8 MB. Free memory was 360.9 MB in the beginning and 359.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 237.04 ms. Allocated memory is still 383.8 MB. Free memory was 359.8 MB in the beginning and 346.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 790771.37 ms. Allocated memory was 383.8 MB in the beginning and 15.8 GB in the end (delta: 15.5 GB). Free memory was 346.4 MB in the beginning and 10.4 GB in the end (delta: -10.1 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (49821states) and FLOYD_HOARE automaton (currently 35 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 129 for 28ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 790702.0ms, OverallIterations: 264, TraceHistogramMax: 3, EmptinessCheckTime: 5792.4ms, AutomataDifference: 423394.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 45.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11845 SDtfs, 74487 SDslu, 92499 SDs, 0 SdLazy, 147755 SolverSat, 13488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76582.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17052 GetRequests, 5556 SyntacticMatches, 250 SemanticMatches, 11245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191159 ImplicationChecksByTransitivity, 387996.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55127occurred in iteration=253, InterpolantAutomatonStates: 9929, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 86760.8ms AutomataMinimizationTime, 263 MinimizatonAttempts, 1406415 StatesRemovedByMinimization, 263 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 730.8ms SsaConstructionTime, 2488.5ms SatisfiabilityAnalysisTime, 213416.2ms InterpolantComputationTime, 14046 NumberOfCodeBlocks, 14046 NumberOfCodeBlocksAsserted, 913 NumberOfCheckSat, 13521 ConstructedInterpolants, 198 QuantifiedInterpolants, 295022 SizeOfPredicates, 1174 NumberOfNonLiveVariables, 18268 ConjunctsInSsa, 3995 ConjunctsInUnsatCore, 525 InterpolantComputations, 3 PerfectInterpolantSequences, 1026/4490 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