/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-dev-29289db [2021-06-05 06:33:19,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 06:33:19,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 06:33:19,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 06:33:19,572 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 06:33:19,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 06:33:19,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 06:33:19,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 06:33:19,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 06:33:19,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 06:33:19,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 06:33:19,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 06:33:19,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 06:33:19,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 06:33:19,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 06:33:19,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 06:33:19,597 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 06:33:19,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 06:33:19,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 06:33:19,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 06:33:19,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 06:33:19,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 06:33:19,813 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 06:33:19,814 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 06:33:19,815 INFO L432 ainManager$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 06:33:19,815 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 06:33:19,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 06:33:19,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 06:33:19,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 06:33:19,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 06:33:19,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 06:33:19,856 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,862 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 06:33:19,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 06:33:19,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 06:33:19,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 06:33:19,873 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,873 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,873 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,873 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,875 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,877 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,877 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 06:33:19" (1/1) ... [2021-06-05 06:33:19,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 06:33:19,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 06:33:19,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 06:33:19,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 06:33:19,879 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 06:33:19" (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 06:33:19,938 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 06:33:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 06:33:19,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 06:33:19,939 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 06:33:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 06:33:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 06:33:19,939 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 06:33:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 06:33:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 06:33:19,940 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 06:33:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 06:33:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 06:33:19,941 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 06:33:20,101 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 06:33:20,101 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 06:33:20,102 INFO L202 PluginConnector]: Adding new model max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:33:20 BoogieIcfgContainer [2021-06-05 06:33:20,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 06:33:20,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 06:33:20,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 06:33:20,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 06:33:20,106 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 06:33:19" (1/2) ... [2021-06-05 06:33:20,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2ecfb and model type max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:33:20, skipping insertion in model container [2021-06-05 06:33:20,107 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 06:33:20" (2/2) ... [2021-06-05 06:33:20,108 INFO L111 eAbstractionObserver]: Analyzing ICFG max-array-hom.wvr.bpl [2021-06-05 06:33:20,111 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 06:33:20,111 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 06:33:20,111 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 06:33:20,112 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 06:33:20,170 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 06:33:20,184 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 06:33:20,201 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 06:33:20,202 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 06:33:20,202 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 06:33:20,202 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 06:33:20,202 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 06:33:20,202 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 06:33:20,202 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 06:33:20,202 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 06:33:20,207 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-05 06:33:20,221 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 06:33:20,222 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 06:33:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 06:33:20,228 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:20,228 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:20,228 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:20,232 INFO L82 PathProgramCache]: Analyzing trace with hash -986458276, now seen corresponding path program 1 times [2021-06-05 06:33:20,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:20,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64283146] [2021-06-05 06:33:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:20,335 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 06:33:20,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:20,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64283146] [2021-06-05 06:33:20,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64283146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:33:20,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:33:20,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 06:33:20,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363313287] [2021-06-05 06:33:20,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 06:33:20,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 06:33:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:33:20,348 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 06:33:20,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:20,371 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-05 06:33:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 06:33:20,372 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 06:33:20,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:20,380 INFO L225 Difference]: With dead ends: 217 [2021-06-05 06:33:20,380 INFO L226 Difference]: Without dead ends: 202 [2021-06-05 06:33:20,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:33:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-05 06:33:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-05 06:33:20,410 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 06:33:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-05 06:33:20,413 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-05 06:33:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:20,413 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-05 06:33:20,414 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 06:33:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-05 06:33:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:33:20,415 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:20,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:20,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 06:33:20,415 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash -433058596, now seen corresponding path program 1 times [2021-06-05 06:33:20,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:20,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672226250] [2021-06-05 06:33:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:20,449 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 06:33:20,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:20,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672226250] [2021-06-05 06:33:20,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672226250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:33:20,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:33:20,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:33:20,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985546292] [2021-06-05 06:33:20,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 06:33:20,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:20,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 06:33:20,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 06:33:20,452 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 06:33:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:20,484 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-05 06:33:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 06:33:20,485 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 06:33:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:20,486 INFO L225 Difference]: With dead ends: 158 [2021-06-05 06:33:20,486 INFO L226 Difference]: Without dead ends: 158 [2021-06-05 06:33:20,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:33:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-05 06:33:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-05 06:33:20,496 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 06:33:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-05 06:33:20,497 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-05 06:33:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:20,498 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-05 06:33:20,498 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 06:33:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-05 06:33:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:33:20,499 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:20,499 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:20,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 06:33:20,499 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash 275548602, now seen corresponding path program 1 times [2021-06-05 06:33:20,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:20,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227813376] [2021-06-05 06:33:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:20,544 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 06:33:20,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:20,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227813376] [2021-06-05 06:33:20,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227813376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:33:20,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:33:20,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:33:20,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954219449] [2021-06-05 06:33:20,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 06:33:20,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:20,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 06:33:20,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:33:20,547 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 06:33:20,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:20,599 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-05 06:33:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 06:33:20,601 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 06:33:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:20,603 INFO L225 Difference]: With dead ends: 183 [2021-06-05 06:33:20,603 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 06:33:20,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 06:33:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 06:33:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-05 06:33:20,612 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 06:33:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-05 06:33:20,613 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-05 06:33:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:20,613 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-05 06:33:20,614 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 06:33:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-05 06:33:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:33:20,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:20,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:20,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 06:33:20,615 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash -483303622, now seen corresponding path program 1 times [2021-06-05 06:33:20,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:20,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181347154] [2021-06-05 06:33:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:20,871 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 06:33:20,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:20,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181347154] [2021-06-05 06:33:20,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181347154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:20,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943987796] [2021-06-05 06:33:20,872 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 06:33:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:33:20,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:21,229 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 06:33:21,231 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:21,233 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 06:33:21,234 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:21,236 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 06:33:21,237 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:21,247 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:21,249 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 06:33:21,249 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:103, output treesize:21 [2021-06-05 06:33:21,291 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 06:33:21,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943987796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:21,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:21,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:33:21,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510168600] [2021-06-05 06:33:21,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:33:21,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:21,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:33:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:21,296 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 06:33:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:21,504 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-05 06:33:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:33:21,504 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 06:33:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:21,508 INFO L225 Difference]: With dead ends: 330 [2021-06-05 06:33:21,508 INFO L226 Difference]: Without dead ends: 315 [2021-06-05 06:33:21,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 341.3ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:33:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-05 06:33:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-05 06:33:21,531 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 06:33:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-05 06:33:21,532 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-05 06:33:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:21,532 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-05 06:33:21,532 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 06:33:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-05 06:33:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:33:21,534 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:21,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:21,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:21,750 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash -651112714, now seen corresponding path program 2 times [2021-06-05 06:33:21,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:21,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792947453] [2021-06-05 06:33:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:22,039 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 06:33:22,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:22,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792947453] [2021-06-05 06:33:22,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792947453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:22,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707061460] [2021-06-05 06:33:22,040 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 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 06:33:22,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:22,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:22,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:33:22,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:22,294 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:33:22,294 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 06:33:22,297 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:22,306 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:33:22,306 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 06:33:22,308 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:22,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:22,322 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 06:33:22,332 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:22,339 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:22,339 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 06:33:22,341 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:22,382 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:22,394 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 06:33:22,395 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:125, output treesize:83 [2021-06-05 06:33:22,520 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 06:33:22,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707061460] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:22,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:22,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-05 06:33:22,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261352168] [2021-06-05 06:33:22,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:33:22,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:22,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:33:22,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:33:22,522 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 06:33:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:23,004 INFO L93 Difference]: Finished difference Result 374 states and 1077 transitions. [2021-06-05 06:33:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:33:23,004 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 06:33:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:23,006 INFO L225 Difference]: With dead ends: 374 [2021-06-05 06:33:23,006 INFO L226 Difference]: Without dead ends: 359 [2021-06-05 06:33:23,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 621.0ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:33:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-06-05 06:33:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229. [2021-06-05 06:33:23,011 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 06:33:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-05 06:33:23,012 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-05 06:33:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:23,012 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-05 06:33:23,012 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 06:33:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-05 06:33:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:33:23,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:23,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:23,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:23,234 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:23,235 INFO L82 PathProgramCache]: Analyzing trace with hash -352339266, now seen corresponding path program 3 times [2021-06-05 06:33:23,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:23,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167110499] [2021-06-05 06:33:23,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:23,397 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 06:33:23,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:23,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167110499] [2021-06-05 06:33:23,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167110499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:23,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138237330] [2021-06-05 06:33:23,398 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 06:33:23,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:33:23,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:23,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 06:33:23,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:23,523 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 06:33:23,524 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:23,528 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 06:33:23,531 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:23,533 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 06:33:23,534 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:23,536 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 06:33:23,537 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:23,538 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 06:33:23,539 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:23,545 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 06:33:23,546 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:23,563 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:33:23,564 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:33:23,564 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:145, output treesize:21 [2021-06-05 06:33:23,598 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 06:33:23,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138237330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:23,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:23,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 06:33:23,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802454296] [2021-06-05 06:33:23,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:33:23,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:33:23,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:33:23,600 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 06:33:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:23,772 INFO L93 Difference]: Finished difference Result 296 states and 831 transitions. [2021-06-05 06:33:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:33:23,773 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 06:33:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:23,774 INFO L225 Difference]: With dead ends: 296 [2021-06-05 06:33:23,774 INFO L226 Difference]: Without dead ends: 281 [2021-06-05 06:33:23,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 241.2ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:33:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-06-05 06:33:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241. [2021-06-05 06:33:23,779 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 06:33:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-05 06:33:23,780 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-05 06:33:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:23,780 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-05 06:33:23,780 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 06:33:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-05 06:33:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:33:23,781 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:23,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:23,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-05 06:33:23,998 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:23,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1218486334, now seen corresponding path program 4 times [2021-06-05 06:33:23,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:23,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309950918] [2021-06-05 06:33:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:24,197 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 06:33:24,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:24,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309950918] [2021-06-05 06:33:24,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309950918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:24,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763846536] [2021-06-05 06:33:24,197 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 06:33:24,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:33:24,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:24,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 06:33:24,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:24,375 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:33:24,375 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 06:33:24,377 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:24,383 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:24,383 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 06:33:24,387 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:24,428 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:24,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:24,436 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 06:33:24,437 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:24,443 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:33:24,444 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 06:33:24,445 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:24,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:24,498 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 06:33:24,498 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:133, output treesize:83 [2021-06-05 06:33:24,614 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 06:33:24,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763846536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:24,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:24,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:33:24,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040738618] [2021-06-05 06:33:24,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:24,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:24,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:24,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:24,616 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 06:33:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:24,902 INFO L93 Difference]: Finished difference Result 409 states and 1185 transitions. [2021-06-05 06:33:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:33:24,902 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 06:33:24,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:24,904 INFO L225 Difference]: With dead ends: 409 [2021-06-05 06:33:24,904 INFO L226 Difference]: Without dead ends: 394 [2021-06-05 06:33:24,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 419.5ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:33:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-06-05 06:33:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 247. [2021-06-05 06:33:24,915 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 06:33:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-05 06:33:24,916 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-05 06:33:24,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:24,916 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-05 06:33:24,916 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 06:33:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-05 06:33:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:24,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:24,917 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:25,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:25,135 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1613936552, now seen corresponding path program 5 times [2021-06-05 06:33:25,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:25,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104827606] [2021-06-05 06:33:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:25,167 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 06:33:25,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:25,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104827606] [2021-06-05 06:33:25,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104827606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:25,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390137365] [2021-06-05 06:33:25,168 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 06:33:25,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:33:25,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:25,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:25,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:25,275 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 06:33:25,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390137365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:25,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:25,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:33:25,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270479535] [2021-06-05 06:33:25,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:33:25,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:25,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:33:25,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:25,276 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 06:33:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:25,619 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-05 06:33:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:33:25,620 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 06:33:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:25,622 INFO L225 Difference]: With dead ends: 619 [2021-06-05 06:33:25,622 INFO L226 Difference]: Without dead ends: 619 [2021-06-05 06:33:25,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 185.7ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:33:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-05 06:33:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-05 06:33:25,628 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 06:33:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-05 06:33:25,629 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-05 06:33:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:25,629 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-05 06:33:25,630 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 06:33:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-05 06:33:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:25,630 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:25,630 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:25,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-06-05 06:33:25,845 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:25,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1704711900, now seen corresponding path program 6 times [2021-06-05 06:33:25,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:25,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846657049] [2021-06-05 06:33:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:25,875 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 06:33:25,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:25,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846657049] [2021-06-05 06:33:25,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846657049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:25,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880484589] [2021-06-05 06:33:25,876 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 06:33:25,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:33:25,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:25,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:25,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:25,995 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 06:33:25,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880484589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:25,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:25,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:25,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96275868] [2021-06-05 06:33:25,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:25,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:25,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:25,996 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 06:33:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:26,661 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-05 06:33:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:33:26,662 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 24 [2021-06-05 06:33:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:26,665 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 06:33:26,665 INFO L226 Difference]: Without dead ends: 1078 [2021-06-05 06:33:26,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 409.3ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:33:26,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-05 06:33:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-05 06:33:26,674 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 06:33:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-05 06:33:26,674 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-05 06:33:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:26,675 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-05 06:33:26,675 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 06:33:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-05 06:33:26,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:26,675 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:26,676 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:26,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:26,892 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2023303316, now seen corresponding path program 7 times [2021-06-05 06:33:26,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:26,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455379759] [2021-06-05 06:33:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:26,935 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 06:33:26,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:26,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455379759] [2021-06-05 06:33:26,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455379759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:26,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830528692] [2021-06-05 06:33:26,935 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 06:33:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:26,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:26,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:27,041 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 06:33:27,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830528692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:27,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:27,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:27,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240383851] [2021-06-05 06:33:27,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:27,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:27,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:27,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:27,043 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 06:33:27,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:27,592 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-05 06:33:27,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:33:27,592 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 06:33:27,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:27,596 INFO L225 Difference]: With dead ends: 951 [2021-06-05 06:33:27,596 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 06:33:27,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 356.5ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:33:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 06:33:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-05 06:33:27,603 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 06:33:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-05 06:33:27,604 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-05 06:33:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:27,604 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-05 06:33:27,604 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 06:33:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-05 06:33:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:27,605 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:27,605 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:27,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:27,820 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:27,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:27,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1087164644, now seen corresponding path program 1 times [2021-06-05 06:33:27,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:27,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760663684] [2021-06-05 06:33:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:27,855 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 06:33:27,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:27,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760663684] [2021-06-05 06:33:27,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760663684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:27,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114036609] [2021-06-05 06:33:27,855 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) [2021-06-05 06:33:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:27,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:33:27,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:27,951 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 06:33:27,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114036609] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:27,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:27,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:33:27,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996055019] [2021-06-05 06:33:27,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:33:27,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:33:27,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:33:27,953 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 06:33:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:28,038 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-05 06:33:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:33:28,038 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 06:33:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:28,048 INFO L225 Difference]: With dead ends: 669 [2021-06-05 06:33:28,048 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 06:33:28,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 06:33:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-05 06:33:28,055 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 06:33:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-05 06:33:28,056 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-05 06:33:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:28,057 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-05 06:33:28,057 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 06:33:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-05 06:33:28,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:28,058 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:28,058 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:28,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-06-05 06:33:28,274 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:28,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1524133352, now seen corresponding path program 8 times [2021-06-05 06:33:28,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:28,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527993653] [2021-06-05 06:33:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:28,315 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 06:33:28,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:28,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527993653] [2021-06-05 06:33:28,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527993653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:28,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123909513] [2021-06-05 06:33:28,315 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 06:33:28,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:28,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:28,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:28,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:28,417 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 06:33:28,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123909513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:28,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:28,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:33:28,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656222166] [2021-06-05 06:33:28,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:28,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:28,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:28,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:28,418 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 06:33:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:28,575 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-05 06:33:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:33:28,576 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 06:33:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:28,578 INFO L225 Difference]: With dead ends: 710 [2021-06-05 06:33:28,578 INFO L226 Difference]: Without dead ends: 672 [2021-06-05 06:33:28,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:33:28,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-05 06:33:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-05 06:33:28,585 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 06:33:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-05 06:33:28,587 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-05 06:33:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:28,587 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-05 06:33:28,587 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 06:33:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-05 06:33:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:28,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:28,588 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:28,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:28,804 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:28,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:28,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2064876612, now seen corresponding path program 2 times [2021-06-05 06:33:28,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:28,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597664300] [2021-06-05 06:33:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:28,832 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 06:33:28,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:28,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597664300] [2021-06-05 06:33:28,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597664300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:28,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250208500] [2021-06-05 06:33:28,832 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 06:33:28,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:28,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:28,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:33:28,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:28,911 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 06:33:28,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250208500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:28,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:28,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:33:28,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118996484] [2021-06-05 06:33:28,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:33:28,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:28,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:33:28,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:33:28,913 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 06:33:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:28,993 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-05 06:33:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:33:28,994 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 06:33:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:28,997 INFO L225 Difference]: With dead ends: 830 [2021-06-05 06:33:28,997 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 06:33:28,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 06:33:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-05 06:33:29,006 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 06:33:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-05 06:33:29,008 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-05 06:33:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:29,008 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-05 06:33:29,008 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 06:33:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-05 06:33:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:29,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:29,009 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:29,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-06-05 06:33:29,217 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:29,217 INFO L82 PathProgramCache]: Analyzing trace with hash 718195046, now seen corresponding path program 9 times [2021-06-05 06:33:29,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:29,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318478348] [2021-06-05 06:33:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:33:29,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:29,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318478348] [2021-06-05 06:33:29,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318478348] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:29,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536883685] [2021-06-05 06:33:29,247 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) [2021-06-05 06:33:29,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:33:29,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:29,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:33:29,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536883685] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:29,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:29,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:33:29,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689395916] [2021-06-05 06:33:29,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:33:29,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:29,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:33:29,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:33:29,348 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 06:33:29,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:29,615 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-05 06:33:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:33:29,616 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 06:33:29,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:29,619 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 06:33:29,619 INFO L226 Difference]: Without dead ends: 1196 [2021-06-05 06:33:29,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:33:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-05 06:33:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-05 06:33:29,630 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 06:33:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-05 06:33:29,631 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-05 06:33:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:29,632 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-05 06:33:29,632 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 06:33:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-05 06:33:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:29,633 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:29,633 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:29,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-05 06:33:29,853 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1503109140, now seen corresponding path program 10 times [2021-06-05 06:33:29,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:29,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824890346] [2021-06-05 06:33:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:29,892 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 06:33:29,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:29,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824890346] [2021-06-05 06:33:29,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824890346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:29,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557392525] [2021-06-05 06:33:29,892 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 06:33:29,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:33:29,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:29,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:29,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:29,993 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 06:33:29,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557392525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:29,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:29,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:33:29,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707300001] [2021-06-05 06:33:29,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:33:29,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:29,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:33:29,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:33:29,994 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 06:33:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:30,349 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-05 06:33:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:33:30,357 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 06:33:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:30,361 INFO L225 Difference]: With dead ends: 1492 [2021-06-05 06:33:30,361 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 06:33:30,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 233.8ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:33:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 06:33:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-05 06:33:30,374 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 06:33:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-05 06:33:30,376 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-05 06:33:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:30,376 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-05 06:33:30,376 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 06:33:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-05 06:33:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:30,377 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:30,377 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:30,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-06-05 06:33:30,589 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:30,589 INFO L82 PathProgramCache]: Analyzing trace with hash 420086484, now seen corresponding path program 11 times [2021-06-05 06:33:30,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:30,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169395406] [2021-06-05 06:33:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:30,621 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 06:33:30,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:30,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169395406] [2021-06-05 06:33:30,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169395406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:30,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033871240] [2021-06-05 06:33:30,621 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 06:33:30,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:30,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:30,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:30,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:30,721 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 06:33:30,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033871240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:30,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:30,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:33:30,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056157936] [2021-06-05 06:33:30,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:30,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:30,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:30,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:30,722 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 06:33:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:30,913 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-05 06:33:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:33:30,913 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 06:33:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:30,917 INFO L225 Difference]: With dead ends: 1258 [2021-06-05 06:33:30,917 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 06:33:30,917 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 143.9ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:33:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 06:33:30,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-05 06:33:30,929 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 06:33:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-05 06:33:30,930 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-05 06:33:30,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:30,931 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-05 06:33:30,931 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 06:33:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-05 06:33:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:30,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:30,932 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:31,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-06-05 06:33:31,148 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:31,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1891164602, now seen corresponding path program 12 times [2021-06-05 06:33:31,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:31,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916478575] [2021-06-05 06:33:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:31,175 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 06:33:31,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:31,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916478575] [2021-06-05 06:33:31,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916478575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:31,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243827944] [2021-06-05 06:33:31,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:33:31,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:33:31,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:31,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:31,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:31,285 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 06:33:31,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243827944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:31,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:31,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:33:31,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369213596] [2021-06-05 06:33:31,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:31,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:31,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:31,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:31,286 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 06:33:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:31,514 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-05 06:33:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:33:31,516 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 06:33:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:31,521 INFO L225 Difference]: With dead ends: 1329 [2021-06-05 06:33:31,521 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 06:33:31,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:33:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 06:33:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-05 06:33:31,536 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 06:33:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-05 06:33:31,538 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-05 06:33:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:31,538 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-05 06:33:31,538 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 06:33:31,538 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-05 06:33:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:31,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:31,539 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:31,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:31,749 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1458287998, now seen corresponding path program 13 times [2021-06-05 06:33:31,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:31,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120091090] [2021-06-05 06:33:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:31,782 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 06:33:31,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:31,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120091090] [2021-06-05 06:33:31,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120091090] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:31,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426880523] [2021-06-05 06:33:31,782 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 06:33:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:31,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:31,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:31,852 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 06:33:31,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426880523] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:31,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:31,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:33:31,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687823397] [2021-06-05 06:33:31,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:33:31,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:31,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:33:31,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:33:31,853 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 06:33:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:32,151 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-05 06:33:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:33:32,152 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 06:33:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:32,156 INFO L225 Difference]: With dead ends: 1548 [2021-06-05 06:33:32,156 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 06:33:32,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 170.6ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:33:32,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 06:33:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-05 06:33:32,173 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 06:33:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-05 06:33:32,174 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-05 06:33:32,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:32,175 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-05 06:33:32,175 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 06:33:32,175 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-05 06:33:32,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:32,176 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:32,176 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:32,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:32,389 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1186278808, now seen corresponding path program 14 times [2021-06-05 06:33:32,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:32,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107958368] [2021-06-05 06:33:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:32,424 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 06:33:32,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:32,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107958368] [2021-06-05 06:33:32,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107958368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:32,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512204736] [2021-06-05 06:33:32,424 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 06:33:32,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:32,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:32,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:32,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:32,528 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 06:33:32,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512204736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:32,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:32,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:32,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168325978] [2021-06-05 06:33:32,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:32,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:32,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:32,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:32,529 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 06:33:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:33,184 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-05 06:33:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:33:33,185 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 06:33:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:33,193 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 06:33:33,193 INFO L226 Difference]: Without dead ends: 2734 [2021-06-05 06:33:33,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 389.8ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:33:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-05 06:33:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-05 06:33:33,215 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 06:33:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-05 06:33:33,217 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-05 06:33:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:33,217 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-05 06:33:33,217 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 06:33:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-05 06:33:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:33,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:33,218 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:33,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:33,425 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:33,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:33,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1753230888, now seen corresponding path program 15 times [2021-06-05 06:33:33,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:33,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675335576] [2021-06-05 06:33:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:33,454 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 06:33:33,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:33,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675335576] [2021-06-05 06:33:33,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675335576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:33,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702099255] [2021-06-05 06:33:33,455 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 06:33:33,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:33:33,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:33,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:33,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:33,569 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 06:33:33,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702099255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:33,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:33,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:33,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145387625] [2021-06-05 06:33:33,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:33,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:33,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:33,570 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 06:33:34,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:34,172 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-05 06:33:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:33:34,172 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 06:33:34,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:34,177 INFO L225 Difference]: With dead ends: 2693 [2021-06-05 06:33:34,177 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 06:33:34,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 378.9ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:33:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 06:33:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-05 06:33:34,197 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 06:33:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-05 06:33:34,199 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-05 06:33:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:34,199 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-05 06:33:34,199 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 06:33:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-05 06:33:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:34,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:34,201 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:34,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-06-05 06:33:34,416 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash 580885030, now seen corresponding path program 16 times [2021-06-05 06:33:34,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:34,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693311647] [2021-06-05 06:33:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:34,450 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 06:33:34,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:34,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693311647] [2021-06-05 06:33:34,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693311647] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:34,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478320695] [2021-06-05 06:33:34,450 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 06:33:34,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:33:34,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:34,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:34,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:34,541 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 06:33:34,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478320695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:34,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:34,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:33:34,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416172784] [2021-06-05 06:33:34,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:33:34,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:34,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:33:34,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:34,542 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 06:33:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:35,067 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-05 06:33:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:33:35,067 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 06:33:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:35,072 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 06:33:35,072 INFO L226 Difference]: Without dead ends: 2677 [2021-06-05 06:33:35,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 307.6ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:33:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-05 06:33:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-05 06:33:35,092 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 06:33:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-05 06:33:35,094 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-05 06:33:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:35,094 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-05 06:33:35,094 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 06:33:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-05 06:33:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:35,096 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:35,096 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:35,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-05 06:33:35,311 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash 662261118, now seen corresponding path program 17 times [2021-06-05 06:33:35,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:35,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670665056] [2021-06-05 06:33:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:35,353 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 06:33:35,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:35,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670665056] [2021-06-05 06:33:35,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670665056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:35,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110167679] [2021-06-05 06:33:35,353 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 06:33:35,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:33:35,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:35,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:35,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:35,450 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 06:33:35,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110167679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:35,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:35,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:33:35,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024947526] [2021-06-05 06:33:35,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:33:35,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:35,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:33:35,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:35,451 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 06:33:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:35,926 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-05 06:33:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:33:35,927 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 06:33:35,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:35,931 INFO L225 Difference]: With dead ends: 2474 [2021-06-05 06:33:35,931 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 06:33:35,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 284.3ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:33:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 06:33:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-05 06:33:35,950 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 06:33:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-05 06:33:35,951 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-05 06:33:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:35,952 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-05 06:33:35,952 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 06:33:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-05 06:33:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:35,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:35,953 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:36,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 06:33:36,165 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1592918334, now seen corresponding path program 18 times [2021-06-05 06:33:36,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:36,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119329389] [2021-06-05 06:33:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:36,198 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 06:33:36,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:36,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119329389] [2021-06-05 06:33:36,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119329389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:36,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416543400] [2021-06-05 06:33:36,198 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 06:33:36,222 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:33:36,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:36,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:36,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:36,292 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 06:33:36,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416543400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:36,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:36,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:36,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15604039] [2021-06-05 06:33:36,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:36,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:36,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:36,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:36,294 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 06:33:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:36,850 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-05 06:33:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:33:36,850 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 06:33:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:36,854 INFO L225 Difference]: With dead ends: 2514 [2021-06-05 06:33:36,854 INFO L226 Difference]: Without dead ends: 2514 [2021-06-05 06:33:36,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 323.2ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:33:36,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-05 06:33:36,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-05 06:33:36,873 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 06:33:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-05 06:33:36,874 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-05 06:33:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:36,875 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-05 06:33:36,875 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 06:33:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-05 06:33:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:36,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:36,876 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:37,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 06:33:37,093 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:37,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1059009808, now seen corresponding path program 19 times [2021-06-05 06:33:37,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:37,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929236212] [2021-06-05 06:33:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:37,123 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 06:33:37,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:37,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929236212] [2021-06-05 06:33:37,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929236212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:37,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682256341] [2021-06-05 06:33:37,123 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 06:33:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:37,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:37,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:37,211 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 06:33:37,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682256341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:37,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:37,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:37,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254343737] [2021-06-05 06:33:37,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:37,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:37,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:37,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:37,213 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 06:33:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:37,737 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-05 06:33:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:33:37,737 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 06:33:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:37,755 INFO L225 Difference]: With dead ends: 2332 [2021-06-05 06:33:37,755 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 06:33:37,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 299.8ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:33:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 06:33:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-05 06:33:37,772 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 06:33:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-05 06:33:37,774 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-05 06:33:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:37,774 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-05 06:33:37,774 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 06:33:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-05 06:33:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:37,776 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:37,776 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:37,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 06:33:37,991 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1971295360, now seen corresponding path program 3 times [2021-06-05 06:33:37,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:37,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299670163] [2021-06-05 06:33:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:38,012 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 06:33:38,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:38,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299670163] [2021-06-05 06:33:38,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299670163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:38,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92528285] [2021-06-05 06:33:38,013 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 06:33:38,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:33:38,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:38,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:33:38,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:38,077 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 06:33:38,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92528285] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:38,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:38,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:33:38,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211700846] [2021-06-05 06:33:38,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:33:38,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:38,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:33:38,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:33:38,078 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 06:33:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:38,148 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-05 06:33:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:33:38,148 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 06:33:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:38,150 INFO L225 Difference]: With dead ends: 929 [2021-06-05 06:33:38,150 INFO L226 Difference]: Without dead ends: 929 [2021-06-05 06:33:38,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-05 06:33:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-05 06:33:38,159 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 06:33:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-05 06:33:38,161 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-05 06:33:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:38,161 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-05 06:33:38,161 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 06:33:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-05 06:33:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:38,162 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:38,162 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:38,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:38,378 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:38,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1041095616, now seen corresponding path program 20 times [2021-06-05 06:33:38,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:38,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364122435] [2021-06-05 06:33:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:38,405 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 06:33:38,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:38,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364122435] [2021-06-05 06:33:38,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364122435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:38,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225445877] [2021-06-05 06:33:38,406 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 06:33:38,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:38,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:38,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:38,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:38,475 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 06:33:38,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225445877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:38,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:38,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:33:38,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357068264] [2021-06-05 06:33:38,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:33:38,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:38,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:33:38,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:33:38,476 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 06:33:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:38,713 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-05 06:33:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:33:38,714 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 06:33:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:38,716 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 06:33:38,716 INFO L226 Difference]: Without dead ends: 1555 [2021-06-05 06:33:38,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 140.4ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:33:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-05 06:33:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-05 06:33:38,728 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 06:33:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-05 06:33:38,730 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-05 06:33:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:38,730 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-05 06:33:38,730 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 06:33:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-05 06:33:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:38,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:38,732 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:38,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:38,945 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:38,945 INFO L82 PathProgramCache]: Analyzing trace with hash 861583836, now seen corresponding path program 21 times [2021-06-05 06:33:38,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:38,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102292528] [2021-06-05 06:33:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:38,972 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 06:33:38,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:38,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102292528] [2021-06-05 06:33:38,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102292528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:38,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930972189] [2021-06-05 06:33:38,973 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 06:33:38,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:33:38,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:38,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:38,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:39,036 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 06:33:39,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930972189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:39,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:39,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:33:39,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809736755] [2021-06-05 06:33:39,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:33:39,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:39,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:33:39,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:33:39,037 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 06:33:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:39,262 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-05 06:33:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:33:39,262 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 06:33:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:39,264 INFO L225 Difference]: With dead ends: 1605 [2021-06-05 06:33:39,264 INFO L226 Difference]: Without dead ends: 1605 [2021-06-05 06:33:39,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:33:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-05 06:33:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-05 06:33:39,279 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 06:33:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-05 06:33:39,281 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-05 06:33:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:39,281 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-05 06:33:39,281 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 06:33:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-05 06:33:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:39,283 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:39,283 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:39,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:39,493 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:39,493 INFO L82 PathProgramCache]: Analyzing trace with hash 816762694, now seen corresponding path program 22 times [2021-06-05 06:33:39,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:39,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608739321] [2021-06-05 06:33:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:39,513 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 06:33:39,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:39,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608739321] [2021-06-05 06:33:39,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608739321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:39,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860634905] [2021-06-05 06:33:39,515 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 06:33:39,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:33:39,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:39,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:39,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:39,584 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 06:33:39,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860634905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:39,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:39,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:33:39,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993862179] [2021-06-05 06:33:39,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:33:39,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:33:39,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:33:39,585 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 06:33:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:39,741 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-05 06:33:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:33:39,741 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 06:33:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:39,743 INFO L225 Difference]: With dead ends: 1524 [2021-06-05 06:33:39,743 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 06:33:39,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 87.5ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:33:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 06:33:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-05 06:33:39,755 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 06:33:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-05 06:33:39,757 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-05 06:33:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:39,757 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-05 06:33:39,757 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 06:33:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-05 06:33:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:39,758 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:39,758 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:39,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-06-05 06:33:39,974 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:39,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1414099352, now seen corresponding path program 23 times [2021-06-05 06:33:39,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:39,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732687177] [2021-06-05 06:33:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:39,998 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 06:33:39,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:39,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732687177] [2021-06-05 06:33:39,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732687177] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:39,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791780507] [2021-06-05 06:33:39,999 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 06:33:40,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:33:40,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:40,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:40,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:40,059 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 06:33:40,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791780507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:40,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:40,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:33:40,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137336868] [2021-06-05 06:33:40,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:33:40,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:40,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:33:40,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:33:40,060 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 06:33:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:40,255 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-05 06:33:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:33:40,255 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 06:33:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:40,269 INFO L225 Difference]: With dead ends: 1508 [2021-06-05 06:33:40,269 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 06:33:40,270 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:33:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 06:33:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-05 06:33:40,281 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 06:33:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-05 06:33:40,283 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-05 06:33:40,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:40,283 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-05 06:33:40,283 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 06:33:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-05 06:33:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:40,284 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:40,284 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:40,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:40,500 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:40,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:40,500 INFO L82 PathProgramCache]: Analyzing trace with hash 887679068, now seen corresponding path program 24 times [2021-06-05 06:33:40,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:40,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108714230] [2021-06-05 06:33:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:40,528 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 06:33:40,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:40,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108714230] [2021-06-05 06:33:40,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108714230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:40,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888679573] [2021-06-05 06:33:40,529 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 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 06:33:40,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:33:40,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:40,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:40,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:40,642 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 06:33:40,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888679573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:40,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:40,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:40,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000952694] [2021-06-05 06:33:40,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:40,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:40,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:40,644 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 06:33:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:41,088 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-05 06:33:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:33:41,088 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 06:33:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:41,091 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 06:33:41,091 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 06:33:41,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 288.4ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:33:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 06:33:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-05 06:33:41,109 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 06:33:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-05 06:33:41,111 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-05 06:33:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:41,111 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-05 06:33:41,111 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 06:33:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-05 06:33:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:41,112 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:41,112 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:41,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-06-05 06:33:41,328 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1454631148, now seen corresponding path program 25 times [2021-06-05 06:33:41,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:41,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028636785] [2021-06-05 06:33:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:41,356 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 06:33:41,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:41,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028636785] [2021-06-05 06:33:41,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028636785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:41,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746765656] [2021-06-05 06:33:41,357 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 06:33:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:41,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:41,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:41,450 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 06:33:41,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746765656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:41,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:41,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:41,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376323980] [2021-06-05 06:33:41,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:41,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:41,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:41,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:41,451 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 06:33:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:41,841 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-05 06:33:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:33:41,841 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 06:33:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:41,844 INFO L225 Difference]: With dead ends: 2335 [2021-06-05 06:33:41,844 INFO L226 Difference]: Without dead ends: 2335 [2021-06-05 06:33:41,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 261.6ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:33:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-05 06:33:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-05 06:33:41,859 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 06:33:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:33:41,860 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:33:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:41,861 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:33:41,861 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 06:33:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:33:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:41,862 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:41,862 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:42,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:42,071 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:42,071 INFO L82 PathProgramCache]: Analyzing trace with hash 282285290, now seen corresponding path program 26 times [2021-06-05 06:33:42,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:42,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552614623] [2021-06-05 06:33:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:42,104 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 06:33:42,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:42,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552614623] [2021-06-05 06:33:42,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552614623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:42,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392163123] [2021-06-05 06:33:42,105 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 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 06:33:42,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:42,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:42,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:42,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:42,201 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 06:33:42,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392163123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:42,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:42,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:33:42,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437308276] [2021-06-05 06:33:42,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:33:42,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:42,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:33:42,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:42,202 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 06:33:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:42,552 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-05 06:33:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:33:42,554 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 06:33:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:42,557 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 06:33:42,557 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 06:33:42,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 233.2ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:33:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 06:33:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-05 06:33:42,572 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 06:33:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:33:42,573 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:33:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:42,574 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:33:42,574 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 06:33:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:33:42,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:42,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:42,575 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:42,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 06:33:42,783 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash 363661378, now seen corresponding path program 27 times [2021-06-05 06:33:42,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:42,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734825344] [2021-06-05 06:33:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:42,813 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 06:33:42,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:42,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734825344] [2021-06-05 06:33:42,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734825344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:42,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836184664] [2021-06-05 06:33:42,813 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 06:33:42,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:33:42,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:42,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:42,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:42,891 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 06:33:42,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836184664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:42,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:42,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:33:42,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286006644] [2021-06-05 06:33:42,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:33:42,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:42,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:33:42,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:42,892 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 06:33:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:43,177 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-05 06:33:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:33:43,177 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 06:33:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:43,185 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 06:33:43,186 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 06:33:43,187 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 179.4ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:33:43,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 06:33:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-05 06:33:43,202 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 06:33:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:33:43,204 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:33:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:43,211 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:33:43,211 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 06:33:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:33:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:43,212 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:43,213 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:43,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:43,424 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1294318594, now seen corresponding path program 28 times [2021-06-05 06:33:43,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:43,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390151414] [2021-06-05 06:33:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:43,454 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 06:33:43,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:43,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390151414] [2021-06-05 06:33:43,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390151414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:43,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733591715] [2021-06-05 06:33:43,455 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 06:33:43,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:33:43,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:43,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:43,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:43,543 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 06:33:43,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733591715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:43,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:43,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:43,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098802159] [2021-06-05 06:33:43,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:43,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:43,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:43,544 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 06:33:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:43,886 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-05 06:33:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:33:43,886 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 06:33:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:43,888 INFO L225 Difference]: With dead ends: 2199 [2021-06-05 06:33:43,889 INFO L226 Difference]: Without dead ends: 2199 [2021-06-05 06:33:43,889 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 213.9ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:33:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-05 06:33:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-05 06:33:43,903 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 06:33:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:33:43,905 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:33:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:43,905 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:33:43,905 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 06:33:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:33:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:43,906 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:43,906 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:44,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 06:33:44,107 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:44,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1357609548, now seen corresponding path program 29 times [2021-06-05 06:33:44,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:44,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526342360] [2021-06-05 06:33:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:44,141 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 06:33:44,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:44,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526342360] [2021-06-05 06:33:44,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526342360] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:44,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314849136] [2021-06-05 06:33:44,141 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 06:33:44,165 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:33:44,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:44,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:44,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:44,223 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 06:33:44,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314849136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:44,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:44,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:44,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765176886] [2021-06-05 06:33:44,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:44,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:44,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:44,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:44,224 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 06:33:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:44,513 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-05 06:33:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:33:44,513 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 06:33:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:44,516 INFO L225 Difference]: With dead ends: 2156 [2021-06-05 06:33:44,516 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 06:33:44,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 197.5ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:33:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 06:33:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-05 06:33:44,539 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 06:33:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:33:44,540 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:33:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:44,540 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:33:44,540 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 06:33:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:33:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:44,542 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:44,542 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:44,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-06-05 06:33:44,758 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash -354181564, now seen corresponding path program 30 times [2021-06-05 06:33:44,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:44,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143833099] [2021-06-05 06:33:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:44,784 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 06:33:44,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:44,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143833099] [2021-06-05 06:33:44,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143833099] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:44,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850256461] [2021-06-05 06:33:44,785 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 06:33:44,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:33:44,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:44,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:44,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:44,868 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 06:33:44,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850256461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:44,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:44,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:33:44,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146934208] [2021-06-05 06:33:44,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:33:44,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:33:44,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:33:44,869 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 06:33:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:45,155 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-05 06:33:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:33:45,155 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 06:33:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:45,157 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 06:33:45,157 INFO L226 Difference]: Without dead ends: 2097 [2021-06-05 06:33:45,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 174.9ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:33:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-05 06:33:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-05 06:33:45,172 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 06:33:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-05 06:33:45,173 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-05 06:33:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:45,173 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-05 06:33:45,173 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 06:33:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-05 06:33:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:45,175 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:45,175 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:45,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:45,375 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:45,376 INFO L82 PathProgramCache]: Analyzing trace with hash -272805476, now seen corresponding path program 31 times [2021-06-05 06:33:45,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:45,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958448472] [2021-06-05 06:33:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:45,404 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 06:33:45,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:45,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958448472] [2021-06-05 06:33:45,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958448472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:45,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853624649] [2021-06-05 06:33:45,404 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 06:33:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:45,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:45,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:45,480 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 06:33:45,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853624649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:45,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:45,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:33:45,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200830599] [2021-06-05 06:33:45,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:33:45,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:45,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:33:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:33:45,482 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 06:33:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:45,715 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-05 06:33:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:33:45,715 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 06:33:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:45,717 INFO L225 Difference]: With dead ends: 1963 [2021-06-05 06:33:45,717 INFO L226 Difference]: Without dead ends: 1959 [2021-06-05 06:33:45,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 140.4ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:33:45,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-05 06:33:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-05 06:33:45,731 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 06:33:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-05 06:33:45,733 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-05 06:33:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:45,733 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-05 06:33:45,733 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 06:33:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-05 06:33:45,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:45,734 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:45,734 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:45,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-06-05 06:33:45,941 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:45,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:45,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1787897448, now seen corresponding path program 32 times [2021-06-05 06:33:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:45,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158391157] [2021-06-05 06:33:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:45,969 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 06:33:45,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:45,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158391157] [2021-06-05 06:33:45,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158391157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:45,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625613272] [2021-06-05 06:33:45,969 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 06:33:45,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:33:45,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:45,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:45,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:46,045 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 06:33:46,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625613272] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:46,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:46,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:33:46,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7996165] [2021-06-05 06:33:46,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:33:46,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:46,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:33:46,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:33:46,048 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 06:33:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:46,227 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-05 06:33:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:33:46,228 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 06:33:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:46,229 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 06:33:46,230 INFO L226 Difference]: Without dead ends: 1716 [2021-06-05 06:33:46,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:33:46,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-05 06:33:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-05 06:33:46,241 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 06:33:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-05 06:33:46,243 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-05 06:33:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:46,243 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-05 06:33:46,243 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 06:33:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-05 06:33:46,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:46,245 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:46,245 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:46,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:46,453 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:46,453 INFO L82 PathProgramCache]: Analyzing trace with hash -190770732, now seen corresponding path program 33 times [2021-06-05 06:33:46,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:46,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621350334] [2021-06-05 06:33:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:46,483 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 06:33:46,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:46,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621350334] [2021-06-05 06:33:46,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621350334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:46,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386173382] [2021-06-05 06:33:46,483 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 06:33:46,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:33:46,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:46,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:46,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:46,569 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 06:33:46,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386173382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:46,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:46,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:46,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856981825] [2021-06-05 06:33:46,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:46,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:46,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:46,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:46,570 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 06:33:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:46,847 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-05 06:33:46,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:33:46,847 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 06:33:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:46,849 INFO L225 Difference]: With dead ends: 1821 [2021-06-05 06:33:46,849 INFO L226 Difference]: Without dead ends: 1821 [2021-06-05 06:33:46,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:33:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-05 06:33:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-05 06:33:46,863 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 06:33:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-05 06:33:46,865 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-05 06:33:46,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:46,865 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-05 06:33:46,865 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 06:33:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-05 06:33:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:46,867 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:46,867 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:47,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-06-05 06:33:47,081 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:47,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:47,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1452268422, now seen corresponding path program 34 times [2021-06-05 06:33:47,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:47,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591790389] [2021-06-05 06:33:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:47,107 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 06:33:47,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:47,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591790389] [2021-06-05 06:33:47,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591790389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:47,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110625756] [2021-06-05 06:33:47,108 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 06:33:47,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:33:47,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:47,200 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 06:33:47,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110625756] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:47,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:47,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:33:47,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768954891] [2021-06-05 06:33:47,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:33:47,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:33:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:33:47,201 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 06:33:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:47,442 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-05 06:33:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:33:47,442 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 06:33:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:47,444 INFO L225 Difference]: With dead ends: 1790 [2021-06-05 06:33:47,444 INFO L226 Difference]: Without dead ends: 1786 [2021-06-05 06:33:47,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 153.8ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:33:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-05 06:33:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-05 06:33:47,457 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 06:33:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-05 06:33:47,458 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-05 06:33:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:47,459 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-05 06:33:47,459 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 06:33:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-05 06:33:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:33:47,460 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:47,460 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:47,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-05 06:33:47,660 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:47,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:47,661 INFO L82 PathProgramCache]: Analyzing trace with hash 184811244, now seen corresponding path program 35 times [2021-06-05 06:33:47,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:47,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396574307] [2021-06-05 06:33:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:47,690 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 06:33:47,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:47,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396574307] [2021-06-05 06:33:47,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396574307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:47,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985142880] [2021-06-05 06:33:47,690 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 06:33:47,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:33:47,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:47,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:33:47,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:47,761 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 06:33:47,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985142880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:47,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:47,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:33:47,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801081329] [2021-06-05 06:33:47,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:33:47,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:47,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:33:47,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:33:47,762 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 06:33:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:47,903 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-05 06:33:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:33:47,903 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 06:33:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:47,905 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 06:33:47,905 INFO L226 Difference]: Without dead ends: 1637 [2021-06-05 06:33:47,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:33:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-05 06:33:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-05 06:33:47,917 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 06:33:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-05 06:33:47,919 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-05 06:33:47,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:47,919 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-05 06:33:47,919 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 06:33:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-05 06:33:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:33:47,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:47,921 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:48,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:48,137 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:48,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:48,137 INFO L82 PathProgramCache]: Analyzing trace with hash -998684486, now seen corresponding path program 4 times [2021-06-05 06:33:48,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:48,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318704571] [2021-06-05 06:33:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:33:48,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:48,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318704571] [2021-06-05 06:33:48,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318704571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:48,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061031830] [2021-06-05 06:33:48,702 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 06:33:48,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:33:48,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:48,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:33:48,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:49,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:49,119 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:49,127 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:49,133 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,138 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 21 treesize of output 13 [2021-06-05 06:33:49,139 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:49,148 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:49,154 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,159 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:33:49,160 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:49,166 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:33:49,172 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:49,182 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:33:49,187 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:33:49,192 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,197 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:33:49,198 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:49,203 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:49,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:49,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:49,207 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:49,273 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:33:49,289 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 06:33:49,289 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:33:49,340 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 06:33:49,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061031830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:49,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:49,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:33:49,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226169001] [2021-06-05 06:33:49,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:33:49,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:49,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:33:49,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:33:49,341 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 06:33:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:50,126 INFO L93 Difference]: Finished difference Result 1531 states and 5001 transitions. [2021-06-05 06:33:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:33:50,126 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 06:33:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:50,128 INFO L225 Difference]: With dead ends: 1531 [2021-06-05 06:33:50,128 INFO L226 Difference]: Without dead ends: 1516 [2021-06-05 06:33:50,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1163.8ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:33:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-06-05 06:33:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1141. [2021-06-05 06:33:50,139 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 06:33:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-05 06:33:50,141 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-05 06:33:50,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:50,141 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-05 06:33:50,141 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 06:33:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-05 06:33:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:33:50,143 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:50,143 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:50,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-05 06:33:50,343 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:50,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:50,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1267884794, now seen corresponding path program 5 times [2021-06-05 06:33:50,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:50,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593302346] [2021-06-05 06:33:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:50,887 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 06:33:50,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:50,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593302346] [2021-06-05 06:33:50,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593302346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:50,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166119533] [2021-06-05 06:33:50,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:33:50,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:33:50,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:50,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:33:50,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:51,301 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-05 06:33:51,340 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_3], 2=[A, v_prenex_5]} [2021-06-05 06:33:51,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:51,344 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 06:33:51,345 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:51,439 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 06:33:51,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:51,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:51,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:51,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:51,445 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:51,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:51,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:51,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:33:51,453 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:51,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:51,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:51,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:51,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:51,501 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:51,534 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:51,546 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 06:33:51,546 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 06:33:51,602 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 06:33:51,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166119533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:51,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:51,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:33:51,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721371739] [2021-06-05 06:33:51,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:33:51,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:51,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:33:51,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:33:51,603 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 06:33:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:52,415 INFO L93 Difference]: Finished difference Result 1509 states and 4945 transitions. [2021-06-05 06:33:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:33:52,415 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 06:33:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:52,417 INFO L225 Difference]: With dead ends: 1509 [2021-06-05 06:33:52,417 INFO L226 Difference]: Without dead ends: 1494 [2021-06-05 06:33:52,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1273.4ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:33:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-06-05 06:33:52,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1150. [2021-06-05 06:33:52,430 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 06:33:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3857 transitions. [2021-06-05 06:33:52,432 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3857 transitions. Word has length 26 [2021-06-05 06:33:52,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:52,432 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 3857 transitions. [2021-06-05 06:33:52,432 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 06:33:52,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3857 transitions. [2021-06-05 06:33:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:33:52,434 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:52,434 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:52,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:33:52,650 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1435653194, now seen corresponding path program 36 times [2021-06-05 06:33:52,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:52,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087888922] [2021-06-05 06:33:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:53,080 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 06:33:53,236 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-05 06:33:53,358 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 06:33:53,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:53,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087888922] [2021-06-05 06:33:53,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087888922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:53,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864704250] [2021-06-05 06:33:53,359 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 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 06:33:53,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:33:53,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:53,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:33:53,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:53,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:33:53,923 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:33:53,931 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:33:53,940 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:33:53,948 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:33:53,957 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:33:53,965 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:33:53,973 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,980 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 33 treesize of output 13 [2021-06-05 06:33:53,982 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:33:53,989 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:53,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:53,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:53,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:33:53,997 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:54,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,004 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:33:54,005 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:54,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,014 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 41 treesize of output 16 [2021-06-05 06:33:54,014 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,021 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 30 treesize of output 16 [2021-06-05 06:33:54,022 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:54,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:33:54,030 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:54,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:54,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:33:54,034 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 41 treesize of output 13 [2021-06-05 06:33:54,035 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:54,057 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-05 06:33:54,058 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 06:33:54,058 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:33:54,086 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 06:33:54,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864704250] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:54,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:54,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:33:54,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806305891] [2021-06-05 06:33:54,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:33:54,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:33:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:33:54,087 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 06:33:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:33:55,621 INFO L93 Difference]: Finished difference Result 1607 states and 5192 transitions. [2021-06-05 06:33:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:33:55,621 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 06:33:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:33:55,623 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 06:33:55,623 INFO L226 Difference]: Without dead ends: 1592 [2021-06-05 06:33:55,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1926.5ms TimeCoverageRelationStatistics Valid=247, Invalid=1159, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:33:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-05 06:33:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1180. [2021-06-05 06:33:55,635 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 06:33:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3939 transitions. [2021-06-05 06:33:55,637 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3939 transitions. Word has length 26 [2021-06-05 06:33:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:33:55,638 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3939 transitions. [2021-06-05 06:33:55,638 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 06:33:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3939 transitions. [2021-06-05 06:33:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:33:55,639 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:33:55,639 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:33:55,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-06-05 06:33:55,840 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:33:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:33:55,840 INFO L82 PathProgramCache]: Analyzing trace with hash -630606018, now seen corresponding path program 6 times [2021-06-05 06:33:55,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:33:55,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187076275] [2021-06-05 06:33:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:33:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:33:56,189 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-06-05 06:33:56,379 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2021-06-05 06:33:56,610 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 06:33:56,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:33:56,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187076275] [2021-06-05 06:33:56,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187076275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:56,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405185112] [2021-06-05 06:33:56,611 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 06:33:56,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:33:56,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:33:56,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:33:56,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:33:56,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:56,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:56,876 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,885 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:56,885 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 40 treesize of output 22 [2021-06-05 06:33:56,885 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,896 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:56,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:56,900 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,911 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:33:56,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2021-06-05 06:33:56,912 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,923 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:33:56,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:56,925 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,934 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:56,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:56,935 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,945 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:56,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:56,945 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,955 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:56,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:56,955 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,964 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:56,965 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 40 treesize of output 24 [2021-06-05 06:33:56,965 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,974 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:56,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:56,975 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,984 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:56,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:56,985 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:56,996 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:56,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 06:33:56,998 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:57,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,009 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:57,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:57,014 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:57,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:57,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:57,028 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:57,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,039 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:33:57,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:33:57,041 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:57,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:33:57,047 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:33:57,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:33:57,048 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:33:57,123 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:33:57,125 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:33:57,126 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:865, output treesize:221 [2021-06-05 06:33:57,359 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 06:33:57,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405185112] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:33:57,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:33:57,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:33:57,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756465617] [2021-06-05 06:33:57,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:33:57,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:33:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:33:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:33:57,360 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 06:33:58,695 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-06-05 06:33:58,838 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 06:33:59,088 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2021-06-05 06:33:59,233 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-06-05 06:33:59,463 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2021-06-05 06:33:59,623 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 06:34:00,139 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-06-05 06:34:00,393 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2021-06-05 06:34:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:00,503 INFO L93 Difference]: Finished difference Result 1843 states and 5867 transitions. [2021-06-05 06:34:00,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:34:00,503 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 06:34:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:00,505 INFO L225 Difference]: With dead ends: 1843 [2021-06-05 06:34:00,505 INFO L226 Difference]: Without dead ends: 1828 [2021-06-05 06:34:00,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 3404.6ms TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:34:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-06-05 06:34:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1198. [2021-06-05 06:34:00,519 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 06:34:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4006 transitions. [2021-06-05 06:34:00,521 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4006 transitions. Word has length 26 [2021-06-05 06:34:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:00,521 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 4006 transitions. [2021-06-05 06:34:00,521 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 06:34:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4006 transitions. [2021-06-05 06:34:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:00,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:00,523 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:00,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:34:00,723 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:00,724 INFO L82 PathProgramCache]: Analyzing trace with hash 919775546, now seen corresponding path program 37 times [2021-06-05 06:34:00,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:00,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372480229] [2021-06-05 06:34:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:01,112 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2021-06-05 06:34:01,286 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 06:34:01,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:01,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372480229] [2021-06-05 06:34:01,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372480229] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:01,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638712082] [2021-06-05 06:34:01,286 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 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 06:34:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:01,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:34:01,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:01,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:01,797 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:01,805 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:01,813 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:01,821 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:01,829 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:01,837 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:01,846 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:34:01,855 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:01,862 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:01,870 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:01,876 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:34:01,883 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:01,890 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:34:01,897 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:01,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:01,901 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 35 treesize of output 19 [2021-06-05 06:34:01,902 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:01,923 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-05 06:34:01,924 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 06:34:01,924 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:34:01,952 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 06:34:01,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638712082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:01,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:01,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:34:01,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78472643] [2021-06-05 06:34:01,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:34:01,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:34:01,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:34:01,953 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 06:34:03,426 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2021-06-05 06:34:03,546 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2021-06-05 06:34:04,037 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2021-06-05 06:34:04,455 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2021-06-05 06:34:04,913 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-05 06:34:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:05,227 INFO L93 Difference]: Finished difference Result 1877 states and 5988 transitions. [2021-06-05 06:34:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:34:05,228 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 06:34:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:05,230 INFO L225 Difference]: With dead ends: 1877 [2021-06-05 06:34:05,230 INFO L226 Difference]: Without dead ends: 1862 [2021-06-05 06:34:05,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 3261.6ms TimeCoverageRelationStatistics Valid=480, Invalid=2276, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:34:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-06-05 06:34:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1206. [2021-06-05 06:34:05,243 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 06:34:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 4036 transitions. [2021-06-05 06:34:05,245 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 4036 transitions. Word has length 26 [2021-06-05 06:34:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:05,245 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 4036 transitions. [2021-06-05 06:34:05,245 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 06:34:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 4036 transitions. [2021-06-05 06:34:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:05,246 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:05,246 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:05,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:34:05,453 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:05,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:05,453 INFO L82 PathProgramCache]: Analyzing trace with hash -56543298, now seen corresponding path program 38 times [2021-06-05 06:34:05,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:05,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006272717] [2021-06-05 06:34:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:05,974 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 06:34:05,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:05,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006272717] [2021-06-05 06:34:05,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006272717] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:05,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603883879] [2021-06-05 06:34:05,974 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 06:34:05,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:34:05,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:05,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:34:05,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,572 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-05 06:34:06,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:06,574 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,599 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-05 06:34:06,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:06,609 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,634 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:34:06,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:06,645 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,679 INFO L354 Elim1Store]: treesize reduction 9, result has 66.7 percent of original size [2021-06-05 06:34:06,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:06,683 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,700 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:34:06,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:06,700 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,717 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:34:06,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:06,717 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,742 INFO L354 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2021-06-05 06:34:06,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:06,744 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,759 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:34:06,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:34:06,760 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,784 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:34:06,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:34:06,789 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,815 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:34:06,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:06,819 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,835 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:34:06,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:06,835 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,857 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:34:06,857 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 41 treesize of output 28 [2021-06-05 06:34:06,858 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:06,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-05 06:34:06,892 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,911 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:34:06,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:34:06,912 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,925 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:34:06,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:06,926 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:06,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:06,937 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:34:06,937 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 39 treesize of output 1 [2021-06-05 06:34:06,938 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:07,055 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-06-05 06:34:07,056 INFO L628 ElimStorePlain]: treesize reduction 126, result has 51.4 percent of original size [2021-06-05 06:34:07,064 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 06:34:07,064 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:148 [2021-06-05 06:34:07,212 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 06:34:07,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603883879] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:07,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:07,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 06:34:07,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284373583] [2021-06-05 06:34:07,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:34:07,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:07,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:34:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:34:07,213 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 06:34:08,786 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2021-06-05 06:34:09,224 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2021-06-05 06:34:09,717 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-06-05 06:34:09,852 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-06-05 06:34:09,983 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-06-05 06:34:10,291 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 06:34:10,584 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-06-05 06:34:10,737 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2021-06-05 06:34:10,966 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-05 06:34:11,225 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-05 06:34:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:11,457 INFO L93 Difference]: Finished difference Result 2051 states and 6324 transitions. [2021-06-05 06:34:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:34:11,457 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 06:34:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:11,460 INFO L225 Difference]: With dead ends: 2051 [2021-06-05 06:34:11,460 INFO L226 Difference]: Without dead ends: 2006 [2021-06-05 06:34:11,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 4424.5ms TimeCoverageRelationStatistics Valid=531, Invalid=3129, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:34:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-06-05 06:34:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1381. [2021-06-05 06:34:11,480 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 06:34:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 4580 transitions. [2021-06-05 06:34:11,482 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 4580 transitions. Word has length 26 [2021-06-05 06:34:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:11,482 INFO L482 AbstractCegarLoop]: Abstraction has 1381 states and 4580 transitions. [2021-06-05 06:34:11,482 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 06:34:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 4580 transitions. [2021-06-05 06:34:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:11,484 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:11,484 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:11,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2021-06-05 06:34:11,690 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2141610526, now seen corresponding path program 7 times [2021-06-05 06:34:11,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:11,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473102859] [2021-06-05 06:34:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:12,196 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 06:34:12,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:12,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473102859] [2021-06-05 06:34:12,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473102859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:12,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746923769] [2021-06-05 06:34:12,196 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 06:34:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:12,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:34:12,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:12,584 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:12,589 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:12,595 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:12,606 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:12,612 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:12,619 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:34:12,624 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:12,630 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:12,635 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,639 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:34:12,640 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,645 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 28 treesize of output 16 [2021-06-05 06:34:12,645 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:12,650 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:12,657 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:12,662 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:12,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:12,665 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:34:12,665 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:12,730 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:34:12,732 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 06:34:12,732 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:34:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:34:12,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746923769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:12,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:12,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:34:12,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034295142] [2021-06-05 06:34:12,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:34:12,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:12,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:34:12,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:34:12,781 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 06:34:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:14,562 INFO L93 Difference]: Finished difference Result 1960 states and 6315 transitions. [2021-06-05 06:34:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:34:14,563 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 06:34:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:14,565 INFO L225 Difference]: With dead ends: 1960 [2021-06-05 06:34:14,565 INFO L226 Difference]: Without dead ends: 1945 [2021-06-05 06:34:14,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 2030.2ms TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:34:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2021-06-05 06:34:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1425. [2021-06-05 06:34:14,580 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 06:34:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 4728 transitions. [2021-06-05 06:34:14,583 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 4728 transitions. Word has length 26 [2021-06-05 06:34:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:14,583 INFO L482 AbstractCegarLoop]: Abstraction has 1425 states and 4728 transitions. [2021-06-05 06:34:14,583 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 06:34:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 4728 transitions. [2021-06-05 06:34:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:14,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:14,585 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:14,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:34:14,796 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:14,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:14,796 INFO L82 PathProgramCache]: Analyzing trace with hash 124958754, now seen corresponding path program 8 times [2021-06-05 06:34:14,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:14,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721770576] [2021-06-05 06:34:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:15,286 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 06:34:15,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:15,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721770576] [2021-06-05 06:34:15,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721770576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:15,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126707554] [2021-06-05 06:34:15,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:34:15,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:34:15,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:15,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:34:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:15,650 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 06:34:15,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:15,716 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:15,717 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 43 treesize of output 41 [2021-06-05 06:34:15,718 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:15,858 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-05 06:34:15,859 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:15,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:15,882 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:34:15,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:15,885 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:16,013 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-05 06:34:16,013 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:16,035 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:34:16,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:16,037 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:16,167 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 06:34:16,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:16,190 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:34:16,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2021-06-05 06:34:16,194 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:16,319 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 06:34:16,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:16,336 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,337 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 24 treesize of output 34 [2021-06-05 06:34:16,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:16,472 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:34:16,473 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:16,488 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:16,491 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:16,607 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:34:16,608 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:16,625 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:34:16,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:16,626 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:16,743 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 06:34:16,743 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:16,759 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:34:16,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:16,761 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:16,873 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:34:16,873 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:16,889 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 06:34:16,889 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:445, output treesize:479 [2021-06-05 06:34:17,135 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-06-05 06:34:17,328 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-06-05 06:34:17,439 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 06:34:17,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126707554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:17,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:17,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:34:17,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803898835] [2021-06-05 06:34:17,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:34:17,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:17,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:34:17,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:34:17,440 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 06:34:18,442 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2021-06-05 06:34:18,790 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2021-06-05 06:34:19,154 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 56 [2021-06-05 06:34:19,447 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2021-06-05 06:34:19,780 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:34:20,219 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-05 06:34:20,601 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-06-05 06:34:20,735 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-05 06:34:21,050 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2021-06-05 06:34:21,364 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 06:34:21,794 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-06-05 06:34:22,102 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44 [2021-06-05 06:34:22,622 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-06-05 06:34:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:22,681 INFO L93 Difference]: Finished difference Result 2026 states and 6474 transitions. [2021-06-05 06:34:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:34:22,681 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 06:34:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:22,684 INFO L225 Difference]: With dead ends: 2026 [2021-06-05 06:34:22,684 INFO L226 Difference]: Without dead ends: 2011 [2021-06-05 06:34:22,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 5702.4ms TimeCoverageRelationStatistics Valid=321, Invalid=1749, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:34:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2021-06-05 06:34:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1444. [2021-06-05 06:34:22,700 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 06:34:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4797 transitions. [2021-06-05 06:34:22,702 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4797 transitions. Word has length 26 [2021-06-05 06:34:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:22,702 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4797 transitions. [2021-06-05 06:34:22,702 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 06:34:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4797 transitions. [2021-06-05 06:34:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:22,704 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:22,704 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:22,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable451 [2021-06-05 06:34:22,909 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:22,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1506197498, now seen corresponding path program 9 times [2021-06-05 06:34:22,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:22,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564614780] [2021-06-05 06:34:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:23,369 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 06:34:23,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:23,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564614780] [2021-06-05 06:34:23,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564614780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:23,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322546772] [2021-06-05 06:34:23,369 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 06:34:23,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:34:23,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:23,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:34:23,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:23,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:23,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:23,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:23,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:23,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:23,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:23,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:23,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:23,939 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:24,069 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-06-05 06:34:24,069 INFO L628 ElimStorePlain]: treesize reduction 93, result has 59.6 percent of original size [2021-06-05 06:34:24,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:24,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:24,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:24,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:24,076 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:24,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:24,080 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 06:34:24,081 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:24,123 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:24,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:24,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:24,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:24,128 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:24,166 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:24,166 INFO L518 ElimStorePlain]: Eliminatee v_prenex_26 vanished before elimination [2021-06-05 06:34:24,168 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 06:34:24,168 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:285, output treesize:51 [2021-06-05 06:34:24,220 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 06:34:24,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322546772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:24,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:24,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:34:24,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198242086] [2021-06-05 06:34:24,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:34:24,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:34:24,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:34:24,221 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 06:34:24,831 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2021-06-05 06:34:25,208 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-05 06:34:25,398 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2021-06-05 06:34:25,764 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2021-06-05 06:34:26,074 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-05 06:34:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:26,153 INFO L93 Difference]: Finished difference Result 2027 states and 6512 transitions. [2021-06-05 06:34:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:34:26,153 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 06:34:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:26,156 INFO L225 Difference]: With dead ends: 2027 [2021-06-05 06:34:26,156 INFO L226 Difference]: Without dead ends: 2012 [2021-06-05 06:34:26,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2193.7ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:34:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2021-06-05 06:34:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1454. [2021-06-05 06:34:26,171 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 06:34:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 4834 transitions. [2021-06-05 06:34:26,173 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 4834 transitions. Word has length 26 [2021-06-05 06:34:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:26,173 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 4834 transitions. [2021-06-05 06:34:26,173 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 06:34:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 4834 transitions. [2021-06-05 06:34:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:26,175 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:26,175 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:26,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:34:26,375 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 247191222, now seen corresponding path program 10 times [2021-06-05 06:34:26,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:26,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478114699] [2021-06-05 06:34:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:26,793 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 06:34:26,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:26,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478114699] [2021-06-05 06:34:26,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478114699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:26,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864218855] [2021-06-05 06:34:26,794 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 06:34:26,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:34:26,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:26,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:34:26,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:27,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,061 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:27,062 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,074 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:27,074 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 06:34:27,077 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,090 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:34:27,090 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 06:34:27,092 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,103 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:27,103 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,113 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:34:27,114 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,126 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:27,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:27,128 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,137 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:34:27,138 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,150 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:27,150 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 06:34:27,154 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,165 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:27,166 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,179 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:27,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:27,182 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,193 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,193 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 06:34:27,193 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,204 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,204 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 06:34:27,204 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,217 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:34:27,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-05 06:34:27,218 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,228 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:34:27,228 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 06:34:27,229 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:27,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:27,242 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:27,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:27,256 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:34:27,256 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 37 treesize of output 20 [2021-06-05 06:34:27,257 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:27,322 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:27,323 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:34:27,323 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 06:34:27,530 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 06:34:27,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864218855] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:27,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:27,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:34:27,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647879745] [2021-06-05 06:34:27,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:34:27,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:27,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:34:27,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:34:27,531 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 06:34:29,362 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-06-05 06:34:29,633 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-06-05 06:34:29,841 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-06-05 06:34:30,056 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-06-05 06:34:30,186 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:34:30,371 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2021-06-05 06:34:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:30,488 INFO L93 Difference]: Finished difference Result 2385 states and 7601 transitions. [2021-06-05 06:34:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:34:30,488 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 06:34:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:30,491 INFO L225 Difference]: With dead ends: 2385 [2021-06-05 06:34:30,491 INFO L226 Difference]: Without dead ends: 2355 [2021-06-05 06:34:30,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 3035.1ms TimeCoverageRelationStatistics Valid=381, Invalid=1781, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:34:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-06-05 06:34:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1467. [2021-06-05 06:34:30,509 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 06:34:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 4888 transitions. [2021-06-05 06:34:30,520 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 4888 transitions. Word has length 26 [2021-06-05 06:34:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:30,520 INFO L482 AbstractCegarLoop]: Abstraction has 1467 states and 4888 transitions. [2021-06-05 06:34:30,521 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 06:34:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 4888 transitions. [2021-06-05 06:34:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:30,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:30,523 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:30,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable499 [2021-06-05 06:34:30,723 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:30,723 INFO L82 PathProgramCache]: Analyzing trace with hash 317421942, now seen corresponding path program 11 times [2021-06-05 06:34:30,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:30,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501898243] [2021-06-05 06:34:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:31,186 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 06:34:31,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:31,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501898243] [2021-06-05 06:34:31,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501898243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:31,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212064674] [2021-06-05 06:34:31,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:34:31,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:34:31,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:31,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:34:31,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:31,556 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 06:34:31,738 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 51 [2021-06-05 06:34:31,799 INFO L446 ElimStorePlain]: Different costs {1=[A, v_prenex_37], 2=[v_prenex_39, v_prenex_38]} [2021-06-05 06:34:31,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:31,803 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 06:34:31,805 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:31,902 INFO L628 ElimStorePlain]: treesize reduction 54, result has 72.0 percent of original size [2021-06-05 06:34:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:31,906 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 06:34:31,907 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:31,949 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:31,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:31,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:31,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:31,953 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:31,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:31,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:31,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:31,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:31,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:31,997 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:31,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:31,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:32,000 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 28 treesize of output 16 [2021-06-05 06:34:32,000 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:32,030 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:32,032 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 06:34:32,032 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:205, output treesize:51 [2021-06-05 06:34:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:34:32,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212064674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:32,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:32,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:34:32,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036970538] [2021-06-05 06:34:32,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:34:32,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:32,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:34:32,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:34:32,087 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 06:34:32,643 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-06-05 06:34:33,139 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2021-06-05 06:34:33,383 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-05 06:34:33,834 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-06-05 06:34:34,201 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-06-05 06:34:34,386 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-06-05 06:34:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:34,536 INFO L93 Difference]: Finished difference Result 1957 states and 6396 transitions. [2021-06-05 06:34:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:34:34,536 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 06:34:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:34,539 INFO L225 Difference]: With dead ends: 1957 [2021-06-05 06:34:34,539 INFO L226 Difference]: Without dead ends: 1942 [2021-06-05 06:34:34,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2785.7ms TimeCoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:34:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-06-05 06:34:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1470. [2021-06-05 06:34:34,554 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 06:34:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4900 transitions. [2021-06-05 06:34:34,557 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4900 transitions. Word has length 26 [2021-06-05 06:34:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:34,557 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4900 transitions. [2021-06-05 06:34:34,557 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 06:34:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4900 transitions. [2021-06-05 06:34:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:34,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:34,559 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:34,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable524 [2021-06-05 06:34:34,759 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1300110838, now seen corresponding path program 12 times [2021-06-05 06:34:34,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:34,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024285463] [2021-06-05 06:34:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:35,036 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-06-05 06:34:35,176 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-06-05 06:34:35,234 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 06:34:35,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:35,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024285463] [2021-06-05 06:34:35,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024285463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:35,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231515294] [2021-06-05 06:34:35,234 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 06:34:35,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:34:35,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:35,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:34:35,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:35,554 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-05 06:34:35,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:35,612 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:34:35,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:35,613 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:35,715 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:34:35,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:35,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:35,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:35,726 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 26 treesize of output 24 [2021-06-05 06:34:35,727 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:35,828 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:34:35,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:35,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:35,839 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:35,839 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 33 treesize of output 27 [2021-06-05 06:34:35,841 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:35,951 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:34:35,951 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:35,962 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:34:35,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:35,966 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:36,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:36,072 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:34:36,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:36,073 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:36,166 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:36,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:34:36,180 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:36,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:36,276 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:36,277 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:36,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:36,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:36,377 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:36,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:36,461 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 06:34:36,461 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 06:34:36,639 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 06:34:36,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231515294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:36,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:36,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:34:36,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531354603] [2021-06-05 06:34:36,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:34:36,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:36,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:34:36,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:34:36,640 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 06:34:36,949 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2021-06-05 06:34:37,334 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2021-06-05 06:34:37,905 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:34:38,177 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-06-05 06:34:38,361 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-06-05 06:34:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:38,629 INFO L93 Difference]: Finished difference Result 2349 states and 7518 transitions. [2021-06-05 06:34:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:34:38,630 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 06:34:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:38,633 INFO L225 Difference]: With dead ends: 2349 [2021-06-05 06:34:38,633 INFO L226 Difference]: Without dead ends: 2319 [2021-06-05 06:34:38,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2292.2ms TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:34:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2021-06-05 06:34:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1476. [2021-06-05 06:34:38,649 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 06:34:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4927 transitions. [2021-06-05 06:34:38,651 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4927 transitions. Word has length 26 [2021-06-05 06:34:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:38,652 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 4927 transitions. [2021-06-05 06:34:38,652 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 06:34:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4927 transitions. [2021-06-05 06:34:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:38,654 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:38,654 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:38,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:34:38,854 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:38,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1219202938, now seen corresponding path program 39 times [2021-06-05 06:34:38,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:38,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173772330] [2021-06-05 06:34:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:34:39,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:39,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173772330] [2021-06-05 06:34:39,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173772330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:39,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667858364] [2021-06-05 06:34:39,203 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 06:34:39,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:34:39,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:39,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:34:39,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:39,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:39,545 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,555 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,565 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,573 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 47 treesize of output 13 [2021-06-05 06:34:39,574 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,582 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 38 treesize of output 16 [2021-06-05 06:34:39,583 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 19 [2021-06-05 06:34:39,592 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,601 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,610 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,619 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,628 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,638 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,646 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2021-06-05 06:34:39,647 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,656 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 34 treesize of output 13 [2021-06-05 06:34:39,656 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:39,666 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,675 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:39,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:39,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:39,681 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:39,718 INFO L628 ElimStorePlain]: treesize reduction 48, result has 49.5 percent of original size [2021-06-05 06:34:39,719 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:34:39,719 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:921, output treesize:47 [2021-06-05 06:34:39,791 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 06:34:39,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667858364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:39,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:39,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-06-05 06:34:39,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858204740] [2021-06-05 06:34:39,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 06:34:39,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:39,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 06:34:39,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:34:39,792 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 06:34:40,305 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 06:34:40,717 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-05 06:34:40,878 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2021-06-05 06:34:41,414 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-06-05 06:34:41,811 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-05 06:34:42,020 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-06-05 06:34:43,181 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-06-05 06:34:43,342 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-06-05 06:34:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:43,626 INFO L93 Difference]: Finished difference Result 3196 states and 9983 transitions. [2021-06-05 06:34:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:34:43,626 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 06:34:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:43,630 INFO L225 Difference]: With dead ends: 3196 [2021-06-05 06:34:43,630 INFO L226 Difference]: Without dead ends: 3109 [2021-06-05 06:34:43,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 3646.5ms TimeCoverageRelationStatistics Valid=620, Invalid=3286, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:34:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-06-05 06:34:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 1509. [2021-06-05 06:34:43,651 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 06:34:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 5042 transitions. [2021-06-05 06:34:43,654 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 5042 transitions. Word has length 26 [2021-06-05 06:34:43,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:43,654 INFO L482 AbstractCegarLoop]: Abstraction has 1509 states and 5042 transitions. [2021-06-05 06:34:43,654 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 06:34:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 5042 transitions. [2021-06-05 06:34:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:43,656 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:43,656 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:43,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable549 [2021-06-05 06:34:43,857 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:43,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1873451990, now seen corresponding path program 40 times [2021-06-05 06:34:43,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:43,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247431837] [2021-06-05 06:34:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:44,151 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-06-05 06:34:44,402 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 06:34:44,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:44,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247431837] [2021-06-05 06:34:44,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247431837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:44,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313493437] [2021-06-05 06:34:44,402 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 06:34:44,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:34:44,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:44,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:34:44,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:44,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:44,956 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:44,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:44,964 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:44,972 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-05 06:34:44,980 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:44,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:44,988 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:44,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:44,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:45,004 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:45,013 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,021 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 43 treesize of output 19 [2021-06-05 06:34:45,021 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:45,030 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:45,038 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:45,045 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,052 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 41 treesize of output 19 [2021-06-05 06:34:45,053 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,059 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 32 treesize of output 13 [2021-06-05 06:34:45,062 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:45,070 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:34:45,076 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:45,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:45,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:45,081 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:45,110 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-05 06:34:45,111 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 06:34:45,111 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:31 [2021-06-05 06:34:45,144 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 06:34:45,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313493437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:45,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:45,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:34:45,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673933845] [2021-06-05 06:34:45,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:34:45,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:45,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:34:45,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:34:45,144 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 06:34:45,909 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-05 06:34:46,057 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2021-06-05 06:34:46,480 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 06:34:46,911 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-06-05 06:34:47,609 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2021-06-05 06:34:47,747 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-05 06:34:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:47,962 INFO L93 Difference]: Finished difference Result 2965 states and 9388 transitions. [2021-06-05 06:34:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:34:47,962 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 06:34:47,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:47,966 INFO L225 Difference]: With dead ends: 2965 [2021-06-05 06:34:47,966 INFO L226 Difference]: Without dead ends: 2920 [2021-06-05 06:34:47,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 2995.7ms TimeCoverageRelationStatistics Valid=535, Invalid=2435, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:34:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2021-06-05 06:34:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1512. [2021-06-05 06:34:47,985 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 06:34:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5055 transitions. [2021-06-05 06:34:47,987 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5055 transitions. Word has length 26 [2021-06-05 06:34:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:47,988 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5055 transitions. [2021-06-05 06:34:47,988 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 06:34:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5055 transitions. [2021-06-05 06:34:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:47,990 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:47,990 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:48,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable568 [2021-06-05 06:34:48,190 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash -39803338, now seen corresponding path program 41 times [2021-06-05 06:34:48,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:48,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167279621] [2021-06-05 06:34:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:48,615 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 06:34:48,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:48,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167279621] [2021-06-05 06:34:48,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167279621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:48,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916273052] [2021-06-05 06:34:48,615 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) [2021-06-05 06:34:48,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:34:48,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:34:48,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:34:48,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:49,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,119 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 06:34:49,119 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2021-06-05 06:34:49,120 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,145 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 06:34:49,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:49,148 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:49,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:49,177 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,200 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 06:34:49,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:49,202 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,219 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:49,219 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,242 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 06:34:49,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 25 [2021-06-05 06:34:49,245 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,268 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-05 06:34:49,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2021-06-05 06:34:49,269 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,285 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:49,285 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,300 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:34:49,301 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,327 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:49,328 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,343 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,343 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 34 treesize of output 1 [2021-06-05 06:34:49,343 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,365 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 06:34:49,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:49,367 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,381 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:49,382 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,396 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:34:49,397 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,419 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:49,420 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:49,430 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:34:49,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:34:49,431 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:49,525 INFO L628 ElimStorePlain]: treesize reduction 69, result has 64.2 percent of original size [2021-06-05 06:34:49,527 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 06:34:49,527 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133 [2021-06-05 06:34:49,652 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 06:34:49,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916273052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:49,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:49,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:34:49,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594081233] [2021-06-05 06:34:49,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:34:49,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:49,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:34:49,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:34:49,653 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 06:34:50,093 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-05 06:34:50,585 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-06-05 06:34:50,795 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-06-05 06:34:51,290 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 06:34:51,510 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-06-05 06:34:51,847 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-06-05 06:34:52,320 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-06-05 06:34:52,770 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2021-06-05 06:34:53,002 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-06-05 06:34:53,153 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2021-06-05 06:34:53,388 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2021-06-05 06:34:53,593 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2021-06-05 06:34:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:54,130 INFO L93 Difference]: Finished difference Result 3428 states and 10667 transitions. [2021-06-05 06:34:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:34:54,131 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 06:34:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:54,135 INFO L225 Difference]: With dead ends: 3428 [2021-06-05 06:34:54,135 INFO L226 Difference]: Without dead ends: 3368 [2021-06-05 06:34:54,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 4253.5ms TimeCoverageRelationStatistics Valid=833, Invalid=3457, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:34:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2021-06-05 06:34:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1525. [2021-06-05 06:34:54,157 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 06:34:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 5115 transitions. [2021-06-05 06:34:54,159 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 5115 transitions. Word has length 26 [2021-06-05 06:34:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:54,159 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 5115 transitions. [2021-06-05 06:34:54,159 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 06:34:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 5115 transitions. [2021-06-05 06:34:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:54,161 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:54,161 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:54,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable682 [2021-06-05 06:34:54,362 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:54,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1882815202, now seen corresponding path program 13 times [2021-06-05 06:34:54,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:54,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119898051] [2021-06-05 06:34:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:54,665 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2021-06-05 06:34:54,832 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-06-05 06:34:54,991 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-06-05 06:34:55,101 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 06:34:55,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:55,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119898051] [2021-06-05 06:34:55,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119898051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:55,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750890883] [2021-06-05 06:34:55,102 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 06:34:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:55,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:34:55,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:55,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:55,464 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:34:55,471 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:55,476 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,481 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:34:55,482 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:55,487 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:34:55,492 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:55,497 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:55,502 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:55,507 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:55,513 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:55,518 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:55,523 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:34:55,528 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:55,532 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:55,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:34:55,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:34:55,536 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:55,603 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:34:55,604 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 06:34:55,604 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:34:55,650 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 06:34:55,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750890883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:55,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:55,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:34:55,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776315341] [2021-06-05 06:34:55,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:34:55,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:55,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:34:55,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:34:55,651 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 06:34:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:34:56,424 INFO L93 Difference]: Finished difference Result 1908 states and 6274 transitions. [2021-06-05 06:34:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:34:56,424 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 06:34:56,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:34:56,426 INFO L225 Difference]: With dead ends: 1908 [2021-06-05 06:34:56,426 INFO L226 Difference]: Without dead ends: 1893 [2021-06-05 06:34:56,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1370.2ms TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:34:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2021-06-05 06:34:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1533. [2021-06-05 06:34:56,441 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 06:34:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 5136 transitions. [2021-06-05 06:34:56,443 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 5136 transitions. Word has length 26 [2021-06-05 06:34:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:34:56,443 INFO L482 AbstractCegarLoop]: Abstraction has 1533 states and 5136 transitions. [2021-06-05 06:34:56,444 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 06:34:56,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 5136 transitions. [2021-06-05 06:34:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:34:56,446 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:34:56,446 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:34:56,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable795 [2021-06-05 06:34:56,646 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:34:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:34:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash 950706158, now seen corresponding path program 14 times [2021-06-05 06:34:56,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:34:56,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443730478] [2021-06-05 06:34:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:34:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:34:57,200 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 06:34:57,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:34:57,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443730478] [2021-06-05 06:34:57,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443730478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:57,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201908565] [2021-06-05 06:34:57,201 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 06:34:57,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:34:57,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:34:57,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:34:57,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:34:57,558 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 06:34:57,626 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 06:34:57,644 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:57,644 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 33 treesize of output 35 [2021-06-05 06:34:57,645 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:57,793 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-06-05 06:34:57,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:57,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:57,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:57,814 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:57,954 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-05 06:34:57,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:57,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:57,975 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:34:57,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:34:57,979 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:58,119 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:34:58,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:58,139 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:34:58,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 30 [2021-06-05 06:34:58,143 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:58,268 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-05 06:34:58,268 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:58,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:58,287 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:34:58,287 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 26 [2021-06-05 06:34:58,288 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:58,411 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 06:34:58,411 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:58,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:58,426 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:58,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-06-05 06:34:58,430 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:58,549 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:34:58,549 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:58,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:58,566 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:34:58,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:34:58,567 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:58,684 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:34:58,684 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:58,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:34:58,703 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:34:58,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 30 [2021-06-05 06:34:58,704 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:34:58,823 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 06:34:58,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:34:58,837 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 06:34:58,837 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:391, output treesize:457 [2021-06-05 06:34:59,130 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-06-05 06:34:59,323 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-06-05 06:34:59,412 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 06:34:59,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201908565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:34:59,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:34:59,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:34:59,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269907555] [2021-06-05 06:34:59,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:34:59,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:34:59,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:34:59,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:34:59,413 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 06:35:00,332 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 45 [2021-06-05 06:35:00,739 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:35:01,279 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2021-06-05 06:35:01,449 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:35:01,856 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-06-05 06:35:02,268 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2021-06-05 06:35:02,648 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-05 06:35:02,865 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-06-05 06:35:03,315 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-06-05 06:35:03,528 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2021-06-05 06:35:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:03,585 INFO L93 Difference]: Finished difference Result 2211 states and 7083 transitions. [2021-06-05 06:35:03,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:35:03,585 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 06:35:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:03,588 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 06:35:03,588 INFO L226 Difference]: Without dead ends: 2181 [2021-06-05 06:35:03,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 4743.9ms TimeCoverageRelationStatistics Valid=256, Invalid=1384, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:35:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-06-05 06:35:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 1518. [2021-06-05 06:35:03,605 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 06:35:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 5084 transitions. [2021-06-05 06:35:03,608 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 5084 transitions. Word has length 26 [2021-06-05 06:35:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:03,608 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 5084 transitions. [2021-06-05 06:35:03,608 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 06:35:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 5084 transitions. [2021-06-05 06:35:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:03,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:03,610 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:03,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable825,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:03,825 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:03,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1721464722, now seen corresponding path program 15 times [2021-06-05 06:35:03,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:03,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330046096] [2021-06-05 06:35:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:04,029 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2021-06-05 06:35:04,276 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2021-06-05 06:35:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:35:04,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:04,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330046096] [2021-06-05 06:35:04,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330046096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:04,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332274129] [2021-06-05 06:35:04,431 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 06:35:04,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:35:04,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:04,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:35:04,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:04,765 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:04,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,783 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:04,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:35:04,786 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,804 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:35:04,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:04,805 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,821 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:35:04,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:04,823 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,837 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:04,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:04,842 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,856 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:04,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:04,857 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,866 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,866 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:35:04,867 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,875 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,876 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:35:04,876 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,894 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:04,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:35:04,898 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,917 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:04,917 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 21 treesize of output 25 [2021-06-05 06:35:04,920 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,929 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:04,929 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,937 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:04,938 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,946 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,946 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:35:04,946 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,955 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:35:04,955 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,964 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:04,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:04,965 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:04,979 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:04,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:04,980 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:05,080 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:05,101 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 06:35:05,101 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:737, output treesize:430 [2021-06-05 06:35:05,310 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-06-05 06:35:05,522 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 06:35:05,630 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 06:35:05,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332274129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:05,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:05,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 06:35:05,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147339728] [2021-06-05 06:35:05,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:35:05,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:05,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:35:05,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:35:05,631 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 06:35:06,613 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-06-05 06:35:06,760 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2021-06-05 06:35:06,947 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2021-06-05 06:35:07,184 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2021-06-05 06:35:07,334 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2021-06-05 06:35:07,548 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 06:35:08,032 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2021-06-05 06:35:08,290 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2021-06-05 06:35:08,568 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-06-05 06:35:08,732 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2021-06-05 06:35:08,966 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 47 [2021-06-05 06:35:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:09,039 INFO L93 Difference]: Finished difference Result 2207 states and 7076 transitions. [2021-06-05 06:35:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:35:09,039 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 06:35:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:09,042 INFO L225 Difference]: With dead ends: 2207 [2021-06-05 06:35:09,042 INFO L226 Difference]: Without dead ends: 2192 [2021-06-05 06:35:09,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 3841.5ms TimeCoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:35:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-06-05 06:35:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1522. [2021-06-05 06:35:09,058 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 06:35:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 5105 transitions. [2021-06-05 06:35:09,061 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 5105 transitions. Word has length 26 [2021-06-05 06:35:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:09,061 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 5105 transitions. [2021-06-05 06:35:09,061 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 06:35:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 5105 transitions. [2021-06-05 06:35:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:09,063 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:09,063 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:09,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable856,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:09,264 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1741432748, now seen corresponding path program 16 times [2021-06-05 06:35:09,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:09,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939775651] [2021-06-05 06:35:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:09,687 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 06:35:09,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:09,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939775651] [2021-06-05 06:35:09,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939775651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:09,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210002051] [2021-06-05 06:35:09,687 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 06:35:09,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:35:09,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:09,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:35:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:09,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:09,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:09,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:09,983 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:09,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:09,994 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:09,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:09,994 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:09,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,004 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:10,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:10,008 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:10,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:10,019 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,027 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:10,028 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,036 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:10,037 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,044 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,045 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 28 treesize of output 16 [2021-06-05 06:35:10,045 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,053 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,053 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 31 treesize of output 19 [2021-06-05 06:35:10,054 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,064 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:10,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:10,067 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,078 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:10,078 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 28 treesize of output 20 [2021-06-05 06:35:10,079 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,090 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:10,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:10,092 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,100 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:35:10,100 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,110 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:10,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:10,111 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,126 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:10,127 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,135 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:10,136 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:10,141 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:10,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:10,142 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:10,229 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:10,235 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 06:35:10,235 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:705, output treesize:180 [2021-06-05 06:35:10,386 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-06-05 06:35:10,474 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 06:35:10,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210002051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:10,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:10,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:35:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615226423] [2021-06-05 06:35:10,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:35:10,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:35:10,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:35:10,475 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 06:35:11,205 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-06-05 06:35:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:11,242 INFO L93 Difference]: Finished difference Result 2055 states and 6709 transitions. [2021-06-05 06:35:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:35:11,242 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 06:35:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:11,245 INFO L225 Difference]: With dead ends: 2055 [2021-06-05 06:35:11,245 INFO L226 Difference]: Without dead ends: 2040 [2021-06-05 06:35:11,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1169.5ms TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:35:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-06-05 06:35:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1529. [2021-06-05 06:35:11,261 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 06:35:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5128 transitions. [2021-06-05 06:35:11,263 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5128 transitions. Word has length 26 [2021-06-05 06:35:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:11,263 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5128 transitions. [2021-06-05 06:35:11,263 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 06:35:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5128 transitions. [2021-06-05 06:35:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:11,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:11,265 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:11,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable911,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:11,466 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1484642536, now seen corresponding path program 17 times [2021-06-05 06:35:11,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:11,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692251283] [2021-06-05 06:35:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:11,874 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 06:35:11,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:11,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692251283] [2021-06-05 06:35:11,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692251283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:11,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687241743] [2021-06-05 06:35:11,874 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 06:35:11,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:35:11,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:11,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:35:11,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:12,210 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 06:35:12,428 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-06-05 06:35:12,490 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_76], 2=[A, v_prenex_75]} [2021-06-05 06:35:12,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:12,494 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 06:35:12,495 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:12,590 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 06:35:12,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:12,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:12,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:12,594 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:12,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:12,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:12,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:12,637 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 06:35:12,638 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:12,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:12,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:35:12,642 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:12,674 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:12,676 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 06:35:12,676 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 06:35:12,728 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 06:35:12,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687241743] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:12,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:12,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:35:12,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534381182] [2021-06-05 06:35:12,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:35:12,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:12,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:35:12,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:35:12,729 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 06:35:13,777 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:35:14,100 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-06-05 06:35:14,271 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2021-06-05 06:35:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:14,402 INFO L93 Difference]: Finished difference Result 2067 states and 6781 transitions. [2021-06-05 06:35:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:35:14,402 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 06:35:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:14,404 INFO L225 Difference]: With dead ends: 2067 [2021-06-05 06:35:14,404 INFO L226 Difference]: Without dead ends: 2052 [2021-06-05 06:35:14,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2110.3ms TimeCoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:35:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2021-06-05 06:35:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1532. [2021-06-05 06:35:14,427 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 06:35:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5140 transitions. [2021-06-05 06:35:14,430 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5140 transitions. Word has length 26 [2021-06-05 06:35:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:14,430 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5140 transitions. [2021-06-05 06:35:14,430 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 06:35:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5140 transitions. [2021-06-05 06:35:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:14,432 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:14,432 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:14,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable952 [2021-06-05 06:35:14,632 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:14,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:14,633 INFO L82 PathProgramCache]: Analyzing trace with hash -808425550, now seen corresponding path program 18 times [2021-06-05 06:35:14,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:14,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724250161] [2021-06-05 06:35:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:35:15,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:15,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724250161] [2021-06-05 06:35:15,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724250161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:15,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734228109] [2021-06-05 06:35:15,042 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 06:35:15,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:35:15,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:15,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:35:15,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:15,482 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:35:15,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:15,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:15,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:35:15,656 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:15,904 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2021-06-05 06:35:15,905 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.8 percent of original size [2021-06-05 06:35:15,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:15,927 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:15,927 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:35:15,928 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:16,049 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 06:35:16,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:16,066 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:16,073 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:16,189 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-05 06:35:16,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:16,206 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:16,211 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:16,441 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2021-06-05 06:35:16,442 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.1 percent of original size [2021-06-05 06:35:16,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:16,460 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:35:16,460 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 21 treesize of output 21 [2021-06-05 06:35:16,461 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:16,572 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 06:35:16,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:16,593 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:16,593 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 26 treesize of output 28 [2021-06-05 06:35:16,594 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:16,706 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 06:35:16,706 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:16,726 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:16,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:35:16,729 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:16,831 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:35:16,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:16,849 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:35:16,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:16,850 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:16,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:16,982 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 06:35:16,982 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:365, output treesize:256 [2021-06-05 06:35:17,159 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 06:35:17,267 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 06:35:17,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734228109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:17,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:17,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:35:17,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183693244] [2021-06-05 06:35:17,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:35:17,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:17,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:35:17,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:35:17,268 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 06:35:17,890 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-06-05 06:35:18,155 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 06:35:18,710 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 122 [2021-06-05 06:35:18,951 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2021-06-05 06:35:19,281 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 06:35:19,789 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2021-06-05 06:35:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:19,852 INFO L93 Difference]: Finished difference Result 2080 states and 6806 transitions. [2021-06-05 06:35:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:35:19,853 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 06:35:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:19,855 INFO L225 Difference]: With dead ends: 2080 [2021-06-05 06:35:19,855 INFO L226 Difference]: Without dead ends: 2065 [2021-06-05 06:35:19,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3063.8ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:35:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-06-05 06:35:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1529. [2021-06-05 06:35:19,879 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 06:35:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5128 transitions. [2021-06-05 06:35:19,882 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5128 transitions. Word has length 26 [2021-06-05 06:35:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:19,882 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5128 transitions. [2021-06-05 06:35:19,882 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 06:35:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5128 transitions. [2021-06-05 06:35:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:19,884 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:19,884 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:20,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable962,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:20,097 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2091148486, now seen corresponding path program 19 times [2021-06-05 06:35:20,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:20,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979635325] [2021-06-05 06:35:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:20,493 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 06:35:20,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:20,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979635325] [2021-06-05 06:35:20,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979635325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:20,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015477408] [2021-06-05 06:35:20,493 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 06:35:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:20,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:35:20,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:20,861 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,866 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 06:35:20,866 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:35:20,871 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,876 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 06:35:20,877 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:20,882 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,887 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:35:20,887 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:35:20,892 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,897 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 36 treesize of output 19 [2021-06-05 06:35:20,898 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:20,903 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:35:20,910 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:35:20,920 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,926 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 06:35:20,926 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,931 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 33 treesize of output 19 [2021-06-05 06:35:20,932 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,936 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 06:35:20,937 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:20,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:20,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:20,940 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 28 treesize of output 16 [2021-06-05 06:35:20,940 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:21,006 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:35:21,007 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 06:35:21,007 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:35:21,051 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 06:35:21,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015477408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:21,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:21,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:35:21,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725450797] [2021-06-05 06:35:21,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:35:21,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:21,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:35:21,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:35:21,052 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 06:35:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:21,768 INFO L93 Difference]: Finished difference Result 1986 states and 6507 transitions. [2021-06-05 06:35:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:35:21,768 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 06:35:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:21,771 INFO L225 Difference]: With dead ends: 1986 [2021-06-05 06:35:21,771 INFO L226 Difference]: Without dead ends: 1965 [2021-06-05 06:35:21,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1055.5ms TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:35:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-06-05 06:35:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1570. [2021-06-05 06:35:21,787 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 06:35:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 5260 transitions. [2021-06-05 06:35:21,790 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 5260 transitions. Word has length 26 [2021-06-05 06:35:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:21,790 INFO L482 AbstractCegarLoop]: Abstraction has 1570 states and 5260 transitions. [2021-06-05 06:35:21,790 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 06:35:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 5260 transitions. [2021-06-05 06:35:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:21,792 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:21,792 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:21,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable994 [2021-06-05 06:35:21,993 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:21,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2036009718, now seen corresponding path program 20 times [2021-06-05 06:35:21,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:21,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67785027] [2021-06-05 06:35:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:22,376 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 06:35:22,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:22,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67785027] [2021-06-05 06:35:22,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67785027] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:22,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138097946] [2021-06-05 06:35:22,377 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 06:35:22,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:35:22,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:22,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:35:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:22,706 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,706 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 28 treesize of output 16 [2021-06-05 06:35:22,707 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:22,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:35:22,724 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,732 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,732 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 19 [2021-06-05 06:35:22,733 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,749 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:35:22,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:22,750 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,767 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:22,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:22,771 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,779 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:22,780 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,797 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:22,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:22,799 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,807 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:22,808 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,825 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:35:22,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:35:22,828 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,843 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:35:22,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:35:22,844 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,853 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:22,853 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,861 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:35:22,862 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,870 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:35:22,871 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,885 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:22,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:22,887 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:22,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:22,901 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:22,906 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:35:22,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:22,907 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:23,005 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:23,017 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 06:35:23,017 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:737, output treesize:407 [2021-06-05 06:35:23,227 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-05 06:35:23,436 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 06:35:23,542 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 06:35:23,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138097946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:23,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:23,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 06:35:23,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413966949] [2021-06-05 06:35:23,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:35:23,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:23,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:35:23,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:35:23,543 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 06:35:24,495 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2021-06-05 06:35:24,650 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:35:25,117 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-06-05 06:35:25,796 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2021-06-05 06:35:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:25,862 INFO L93 Difference]: Finished difference Result 2168 states and 6948 transitions. [2021-06-05 06:35:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:35:25,862 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 06:35:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:25,865 INFO L225 Difference]: With dead ends: 2168 [2021-06-05 06:35:25,865 INFO L226 Difference]: Without dead ends: 2143 [2021-06-05 06:35:25,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2766.8ms TimeCoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:35:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2021-06-05 06:35:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1584. [2021-06-05 06:35:25,882 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 06:35:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 5320 transitions. [2021-06-05 06:35:25,884 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 5320 transitions. Word has length 26 [2021-06-05 06:35:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:25,885 INFO L482 AbstractCegarLoop]: Abstraction has 1584 states and 5320 transitions. [2021-06-05 06:35:25,885 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 06:35:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 5320 transitions. [2021-06-05 06:35:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:25,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:25,887 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:26,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1022 [2021-06-05 06:35:26,088 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:26,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2016041692, now seen corresponding path program 21 times [2021-06-05 06:35:26,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:26,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179481643] [2021-06-05 06:35:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:26,496 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 06:35:26,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:26,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179481643] [2021-06-05 06:35:26,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179481643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:26,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402384241] [2021-06-05 06:35:26,496 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 06:35:26,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:35:26,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:26,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:35:26,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:26,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,815 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:26,815 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,826 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:26,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:26,827 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,834 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:26,835 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,845 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:26,846 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 28 treesize of output 20 [2021-06-05 06:35:26,847 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,856 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:26,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:26,858 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,866 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,866 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 06:35:26,866 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,875 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:26,875 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,885 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:26,885 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 33 treesize of output 27 [2021-06-05 06:35:26,887 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,895 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,895 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 06:35:26,896 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,903 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:26,904 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,913 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:26,914 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 06:35:26,917 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,927 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:26,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:26,928 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,938 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:26,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:26,939 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:26,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:26,954 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,961 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,961 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 33 treesize of output 19 [2021-06-05 06:35:26,962 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:26,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:26,967 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:26,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:26,967 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:27,041 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:27,046 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 06:35:27,046 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 06:35:27,249 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 06:35:27,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402384241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:27,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:27,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:35:27,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548056738] [2021-06-05 06:35:27,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:35:27,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:27,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:35:27,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:35:27,250 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 06:35:28,023 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-06-05 06:35:28,439 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2021-06-05 06:35:28,648 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-05 06:35:28,933 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-06-05 06:35:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:28,981 INFO L93 Difference]: Finished difference Result 2090 states and 6847 transitions. [2021-06-05 06:35:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:35:28,982 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 06:35:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:28,984 INFO L225 Difference]: With dead ends: 2090 [2021-06-05 06:35:28,984 INFO L226 Difference]: Without dead ends: 2061 [2021-06-05 06:35:28,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1984.9ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:35:28,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-06-05 06:35:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1587. [2021-06-05 06:35:29,000 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 06:35:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 5331 transitions. [2021-06-05 06:35:29,003 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 5331 transitions. Word has length 26 [2021-06-05 06:35:29,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:29,003 INFO L482 AbstractCegarLoop]: Abstraction has 1587 states and 5331 transitions. [2021-06-05 06:35:29,003 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 06:35:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 5331 transitions. [2021-06-05 06:35:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:29,005 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:29,005 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:29,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1071,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:29,205 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1960184130, now seen corresponding path program 22 times [2021-06-05 06:35:29,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:29,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716384929] [2021-06-05 06:35:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:29,386 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2021-06-05 06:35:29,744 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 06:35:29,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:29,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716384929] [2021-06-05 06:35:29,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716384929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:29,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185255223] [2021-06-05 06:35:29,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:29,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:35:29,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:29,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:35:29,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:30,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:30,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:30,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:30,027 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 06:35:30,028 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:30,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:30,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:30,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:30,033 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:30,141 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-05 06:35:30,141 INFO L628 ElimStorePlain]: treesize reduction 121, result has 46.0 percent of original size [2021-06-05 06:35:30,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:30,144 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 06:35:30,145 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:30,178 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:30,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:30,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:30,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:35:30,182 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:30,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:30,214 INFO L518 ElimStorePlain]: Eliminatee v_prenex_113 vanished before elimination [2021-06-05 06:35:30,216 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 06:35:30,216 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:264, output treesize:51 [2021-06-05 06:35:30,268 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 06:35:30,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185255223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:30,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:30,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:35:30,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759158408] [2021-06-05 06:35:30,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:35:30,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:30,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:35:30,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:35:30,268 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 06:35:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:30,578 INFO L93 Difference]: Finished difference Result 1662 states and 5522 transitions. [2021-06-05 06:35:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:35:30,578 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 06:35:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:30,580 INFO L225 Difference]: With dead ends: 1662 [2021-06-05 06:35:30,580 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 06:35:30,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 732.7ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:35:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 06:35:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1593. [2021-06-05 06:35:30,594 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 06:35:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 5354 transitions. [2021-06-05 06:35:30,597 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 5354 transitions. Word has length 26 [2021-06-05 06:35:30,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:30,597 INFO L482 AbstractCegarLoop]: Abstraction has 1593 states and 5354 transitions. [2021-06-05 06:35:30,597 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 06:35:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 5354 transitions. [2021-06-05 06:35:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:30,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:30,599 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:30,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1112,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:30,800 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:30,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:30,800 INFO L82 PathProgramCache]: Analyzing trace with hash -389358530, now seen corresponding path program 23 times [2021-06-05 06:35:30,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:30,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277713132] [2021-06-05 06:35:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:31,128 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 06:35:31,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:31,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277713132] [2021-06-05 06:35:31,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277713132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:31,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954600205] [2021-06-05 06:35:31,128 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 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 06:35:31,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:35:31,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:31,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:35:31,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:31,478 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_115, v_prenex_117], 3=[A, v_prenex_119]} [2021-06-05 06:35:31,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,490 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:31,492 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:31,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,502 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:35:31,503 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:31,627 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:35:31,628 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,640 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:31,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:35:31,642 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:31,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:31,652 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:31,782 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:35:31,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,795 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:35:31,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:31,796 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:31,809 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:31,911 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:35:31,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:31,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:31,927 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:31,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:31,937 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:35:31,937 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 32 treesize of output 22 [2021-06-05 06:35:31,939 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:32,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:32,043 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 06:35:32,043 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:349, output treesize:194 [2021-06-05 06:35:32,225 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 06:35:32,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954600205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:32,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:32,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:35:32,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940420286] [2021-06-05 06:35:32,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:35:32,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:32,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:35:32,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:35:32,226 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 06:35:33,351 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-06-05 06:35:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:33,413 INFO L93 Difference]: Finished difference Result 2262 states and 7355 transitions. [2021-06-05 06:35:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:35:33,416 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 06:35:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:33,420 INFO L225 Difference]: With dead ends: 2262 [2021-06-05 06:35:33,420 INFO L226 Difference]: Without dead ends: 2212 [2021-06-05 06:35:33,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1396.2ms TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:35:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-06-05 06:35:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1600. [2021-06-05 06:35:33,437 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 06:35:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 5384 transitions. [2021-06-05 06:35:33,439 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 5384 transitions. Word has length 26 [2021-06-05 06:35:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:33,440 INFO L482 AbstractCegarLoop]: Abstraction has 1600 states and 5384 transitions. [2021-06-05 06:35:33,440 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 06:35:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 5384 transitions. [2021-06-05 06:35:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:33,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:33,442 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:33,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1123 [2021-06-05 06:35:33,642 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1800748254, now seen corresponding path program 24 times [2021-06-05 06:35:33,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:33,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011905639] [2021-06-05 06:35:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:33,819 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-06-05 06:35:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:35:34,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:34,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011905639] [2021-06-05 06:35:34,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011905639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:34,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080706544] [2021-06-05 06:35:34,171 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 06:35:34,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:35:34,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:34,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:35:34,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:34,543 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:35:34,723 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 06:35:34,795 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_129], 2=[A, v_prenex_128]} [2021-06-05 06:35:34,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:34,800 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 06:35:34,801 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:34,905 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 06:35:34,905 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 06:35:34,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:34,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:34,908 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 06:35:34,909 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:34,948 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:34,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:34,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:34,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:34,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:34,953 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:34,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:34,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:34,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:35:34,957 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:34,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:34,990 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 06:35:34,991 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 06:35:35,043 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 06:35:35,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080706544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:35,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:35,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:35:35,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299347478] [2021-06-05 06:35:35,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:35:35,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:35,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:35:35,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:35:35,043 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 06:35:35,862 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:35:36,226 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-06-05 06:35:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:36,334 INFO L93 Difference]: Finished difference Result 1991 states and 6587 transitions. [2021-06-05 06:35:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:35:36,334 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 06:35:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:36,336 INFO L225 Difference]: With dead ends: 1991 [2021-06-05 06:35:36,336 INFO L226 Difference]: Without dead ends: 1976 [2021-06-05 06:35:36,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1877.7ms TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:35:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-06-05 06:35:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1611. [2021-06-05 06:35:36,351 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 06:35:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 5421 transitions. [2021-06-05 06:35:36,354 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 5421 transitions. Word has length 26 [2021-06-05 06:35:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:36,354 INFO L482 AbstractCegarLoop]: Abstraction has 1611 states and 5421 transitions. [2021-06-05 06:35:36,354 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 06:35:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 5421 transitions. [2021-06-05 06:35:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:36,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:36,356 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:36,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1154 [2021-06-05 06:35:36,556 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:36,556 INFO L82 PathProgramCache]: Analyzing trace with hash 183215474, now seen corresponding path program 25 times [2021-06-05 06:35:36,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:36,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705489141] [2021-06-05 06:35:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:36,747 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-06-05 06:35:36,885 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2021-06-05 06:35:37,088 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 06:35:37,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:37,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705489141] [2021-06-05 06:35:37,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705489141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:37,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21227578] [2021-06-05 06:35:37,088 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 06:35:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:37,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:35:37,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:37,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,334 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,334 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:37,346 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 06:35:37,353 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,367 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:37,368 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 06:35:37,369 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,378 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,379 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 06:35:37,379 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,389 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,390 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,403 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:37,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,404 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,414 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,414 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,427 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:37,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,430 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,444 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,444 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:35:37,445 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,459 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:37,459 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 06:35:37,463 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,476 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,477 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,487 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,488 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,500 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:37,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,502 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,513 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:37,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,513 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,525 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:37,525 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 06:35:37,526 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:37,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:37,534 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:37,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:37,535 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:37,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:37,602 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:35:37,602 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 06:35:37,783 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 06:35:37,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21227578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:37,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:37,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:35:37,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616258231] [2021-06-05 06:35:37,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:35:37,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:37,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:35:37,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:35:37,784 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 06:35:38,390 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:35:38,557 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2021-06-05 06:35:39,103 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-06-05 06:35:39,282 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-06-05 06:35:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:39,372 INFO L93 Difference]: Finished difference Result 2102 states and 6930 transitions. [2021-06-05 06:35:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:35:39,372 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 06:35:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:39,374 INFO L225 Difference]: With dead ends: 2102 [2021-06-05 06:35:39,374 INFO L226 Difference]: Without dead ends: 2083 [2021-06-05 06:35:39,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1940.5ms TimeCoverageRelationStatistics Valid=220, Invalid=970, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:35:39,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-06-05 06:35:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1612. [2021-06-05 06:35:39,391 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 06:35:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 5429 transitions. [2021-06-05 06:35:39,393 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 5429 transitions. Word has length 26 [2021-06-05 06:35:39,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:39,393 INFO L482 AbstractCegarLoop]: Abstraction has 1612 states and 5429 transitions. [2021-06-05 06:35:39,394 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 06:35:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 5429 transitions. [2021-06-05 06:35:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:39,395 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:39,395 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:39,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1163,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:39,596 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1506727430, now seen corresponding path program 26 times [2021-06-05 06:35:39,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:39,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683549723] [2021-06-05 06:35:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:39,891 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 06:35:39,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:39,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683549723] [2021-06-05 06:35:39,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683549723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:39,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341062730] [2021-06-05 06:35:39,891 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 06:35:39,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:35:39,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:39,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:35:39,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:40,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,102 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:35:40,103 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,110 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:40,111 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,120 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:40,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:35:40,122 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,129 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:40,130 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,139 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:40,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,140 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,150 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:40,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,151 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,159 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:35:40,160 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:40,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:35:40,170 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,186 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:40,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,190 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,199 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,199 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,207 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,208 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:40,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,220 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,229 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:35:40,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,231 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,242 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:40,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:40,245 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,252 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:40,253 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:40,257 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:35:40,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:35:40,258 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:40,322 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:40,323 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:35:40,323 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:35:40,526 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 06:35:40,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341062730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:40,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:40,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:35:40,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117749765] [2021-06-05 06:35:40,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:35:40,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:40,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:35:40,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:35:40,527 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 06:35:41,052 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:35:41,652 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-06-05 06:35:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:41,701 INFO L93 Difference]: Finished difference Result 2116 states and 6975 transitions. [2021-06-05 06:35:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:35:41,701 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 06:35:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:41,704 INFO L225 Difference]: With dead ends: 2116 [2021-06-05 06:35:41,704 INFO L226 Difference]: Without dead ends: 2091 [2021-06-05 06:35:41,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1391.3ms TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:35:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2021-06-05 06:35:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1618. [2021-06-05 06:35:41,720 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 06:35:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5447 transitions. [2021-06-05 06:35:41,722 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5447 transitions. Word has length 26 [2021-06-05 06:35:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:41,723 INFO L482 AbstractCegarLoop]: Abstraction has 1618 states and 5447 transitions. [2021-06-05 06:35:41,723 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 06:35:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5447 transitions. [2021-06-05 06:35:41,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:41,724 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:41,725 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:41,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1188 [2021-06-05 06:35:41,940 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash -132958662, now seen corresponding path program 42 times [2021-06-05 06:35:41,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:41,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56464544] [2021-06-05 06:35:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:42,438 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 06:35:42,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:42,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56464544] [2021-06-05 06:35:42,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56464544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:42,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811354458] [2021-06-05 06:35:42,438 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 06:35:42,462 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:35:42,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:42,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:35:42,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:42,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:42,945 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:42,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:42,953 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:42,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:42,963 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:35:42,971 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:42,979 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:42,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:42,987 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:42,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:42,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-05 06:35:42,997 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:43,006 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:43,016 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:43,026 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,034 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 32 treesize of output 16 [2021-06-05 06:35:43,035 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:43,043 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:43,051 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:43,058 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,065 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 16 [2021-06-05 06:35:43,065 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:43,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:43,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:35:43,070 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:43,098 INFO L628 ElimStorePlain]: treesize reduction 20, result has 64.9 percent of original size [2021-06-05 06:35:43,099 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 06:35:43,100 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-05 06:35:43,126 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 06:35:43,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811354458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:43,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:43,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:35:43,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054471805] [2021-06-05 06:35:43,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:35:43,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:43,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:35:43,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:35:43,127 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 06:35:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:44,627 INFO L93 Difference]: Finished difference Result 2097 states and 6880 transitions. [2021-06-05 06:35:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:35:44,627 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 06:35:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:44,629 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 06:35:44,629 INFO L226 Difference]: Without dead ends: 2071 [2021-06-05 06:35:44,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1785.2ms TimeCoverageRelationStatistics Valid=340, Invalid=1552, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:35:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-06-05 06:35:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1622. [2021-06-05 06:35:44,645 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 06:35:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5457 transitions. [2021-06-05 06:35:44,648 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5457 transitions. Word has length 26 [2021-06-05 06:35:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:44,648 INFO L482 AbstractCegarLoop]: Abstraction has 1622 states and 5457 transitions. [2021-06-05 06:35:44,648 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 06:35:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5457 transitions. [2021-06-05 06:35:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:44,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:44,650 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:44,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1205 [2021-06-05 06:35:44,850 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:44,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:44,851 INFO L82 PathProgramCache]: Analyzing trace with hash 934915902, now seen corresponding path program 43 times [2021-06-05 06:35:44,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:44,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768071558] [2021-06-05 06:35:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:45,355 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 06:35:45,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:45,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768071558] [2021-06-05 06:35:45,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768071558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:45,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014305827] [2021-06-05 06:35:45,356 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 06:35:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:45,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:35:45,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:45,694 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_132, v_prenex_134], 6=[A, v_prenex_130]} [2021-06-05 06:35:45,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:45,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:45,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:45,700 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 32 treesize of output 16 [2021-06-05 06:35:45,701 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:45,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:45,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:45,706 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:35:45,707 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:45,807 INFO L628 ElimStorePlain]: treesize reduction 180, result has 40.2 percent of original size [2021-06-05 06:35:45,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:45,811 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 06:35:45,812 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:45,843 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:45,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:45,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:45,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:45,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:45,847 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 29 treesize of output 13 [2021-06-05 06:35:45,848 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:45,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:45,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:45,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:45,879 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 29 treesize of output 13 [2021-06-05 06:35:45,880 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:45,904 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:45,906 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 06:35:45,906 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:341, output treesize:43 [2021-06-05 06:35:45,951 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 06:35:45,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014305827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:45,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:45,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:35:45,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319740904] [2021-06-05 06:35:45,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:35:45,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:45,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:35:45,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:35:45,952 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 06:35:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:47,769 INFO L93 Difference]: Finished difference Result 2270 states and 7447 transitions. [2021-06-05 06:35:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:35:47,769 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 06:35:47,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:47,772 INFO L225 Difference]: With dead ends: 2270 [2021-06-05 06:35:47,772 INFO L226 Difference]: Without dead ends: 2255 [2021-06-05 06:35:47,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 2013.8ms TimeCoverageRelationStatistics Valid=391, Invalid=1589, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:35:47,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-06-05 06:35:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1622. [2021-06-05 06:35:47,789 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 06:35:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5457 transitions. [2021-06-05 06:35:47,792 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5457 transitions. Word has length 26 [2021-06-05 06:35:47,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:47,792 INFO L482 AbstractCegarLoop]: Abstraction has 1622 states and 5457 transitions. [2021-06-05 06:35:47,792 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 06:35:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5457 transitions. [2021-06-05 06:35:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:47,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:47,794 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:47,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1319,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:47,994 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:47,994 INFO L82 PathProgramCache]: Analyzing trace with hash 346540478, now seen corresponding path program 27 times [2021-06-05 06:35:47,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:47,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86896996] [2021-06-05 06:35:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:48,193 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2021-06-05 06:35:48,413 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-06-05 06:35:48,623 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 06:35:48,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:48,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86896996] [2021-06-05 06:35:48,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86896996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:48,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437405684] [2021-06-05 06:35:48,623 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 06:35:48,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:35:48,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:48,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:35:48,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:48,911 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 06:35:49,089 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 06:35:49,367 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-06-05 06:35:49,445 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_143, v_prenex_145], 6=[A, v_prenex_147]} [2021-06-05 06:35:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:49,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:49,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:49,452 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:35:49,452 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:49,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:49,458 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:35:49,458 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:49,610 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-06-05 06:35:49,610 INFO L628 ElimStorePlain]: treesize reduction 147, result has 51.5 percent of original size [2021-06-05 06:35:49,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:49,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:49,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:49,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:35:49,617 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:49,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:49,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:49,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:35:49,622 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:49,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:49,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:49,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:35:49,673 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:49,718 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:49,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:49,721 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 06:35:49,722 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:49,763 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:49,766 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 06:35:49,766 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:341, output treesize:61 [2021-06-05 06:35:49,833 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 06:35:49,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437405684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:49,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:49,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:35:49,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801930714] [2021-06-05 06:35:49,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:35:49,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:49,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:35:49,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:35:49,834 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 06:35:50,237 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-06-05 06:35:50,532 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-06-05 06:35:50,691 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 47 [2021-06-05 06:35:51,133 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-06-05 06:35:51,703 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2021-06-05 06:35:52,182 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 89 [2021-06-05 06:35:52,792 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 87 [2021-06-05 06:35:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:52,902 INFO L93 Difference]: Finished difference Result 2122 states and 6912 transitions. [2021-06-05 06:35:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:35:52,903 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 06:35:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:52,905 INFO L225 Difference]: With dead ends: 2122 [2021-06-05 06:35:52,905 INFO L226 Difference]: Without dead ends: 2107 [2021-06-05 06:35:52,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3746.4ms TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:35:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2021-06-05 06:35:52,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1633. [2021-06-05 06:35:52,921 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 06:35:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 5495 transitions. [2021-06-05 06:35:52,924 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 5495 transitions. Word has length 26 [2021-06-05 06:35:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:52,924 INFO L482 AbstractCegarLoop]: Abstraction has 1633 states and 5495 transitions. [2021-06-05 06:35:52,924 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 06:35:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 5495 transitions. [2021-06-05 06:35:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:52,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:52,926 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:53,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1333 [2021-06-05 06:35:53,126 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1896922042, now seen corresponding path program 44 times [2021-06-05 06:35:53,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:53,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544634661] [2021-06-05 06:35:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:53,612 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 06:35:53,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:53,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544634661] [2021-06-05 06:35:53,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544634661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:53,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852276722] [2021-06-05 06:35:53,612 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 06:35:53,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:35:53,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:53,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:35:53,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:53,983 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-06-05 06:35:54,321 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_158], 6=[v_prenex_160, v_prenex_162]} [2021-06-05 06:35:54,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,346 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:35:54,346 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-06-05 06:35:54,350 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:54,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,373 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:35:54,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:54,374 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:54,552 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 06:35:54,552 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:54,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,572 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:35:54,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:54,573 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:54,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:54,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:35:54,592 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:54,749 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:35:54,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:54,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:54,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:54,770 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:54,770 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 06:35:54,775 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:54,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:54,793 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:35:54,793 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-05 06:35:54,794 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:54,934 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:35:54,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:54,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:54,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:54,957 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:35:54,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:35:54,958 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:35:54,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:35:54,975 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:35:54,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:35:54,977 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:55,100 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 06:35:55,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:35:55,116 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 06:35:55,117 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:433, output treesize:343 [2021-06-05 06:35:55,271 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 06:35:55,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852276722] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:55,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:35:55,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:35:55,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698807503] [2021-06-05 06:35:55,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 06:35:55,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:35:55,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 06:35:55,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:35:55,272 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 06:35:57,369 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2021-06-05 06:35:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:35:57,922 INFO L93 Difference]: Finished difference Result 2550 states and 8113 transitions. [2021-06-05 06:35:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:35:57,923 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 06:35:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:35:57,925 INFO L225 Difference]: With dead ends: 2550 [2021-06-05 06:35:57,926 INFO L226 Difference]: Without dead ends: 2506 [2021-06-05 06:35:57,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 3014.0ms TimeCoverageRelationStatistics Valid=511, Invalid=2459, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:35:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-06-05 06:35:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1640. [2021-06-05 06:35:57,944 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 06:35:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 5520 transitions. [2021-06-05 06:35:57,946 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 5520 transitions. Word has length 26 [2021-06-05 06:35:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:35:57,946 INFO L482 AbstractCegarLoop]: Abstraction has 1640 states and 5520 transitions. [2021-06-05 06:35:57,946 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 06:35:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 5520 transitions. [2021-06-05 06:35:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:35:57,948 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:35:57,948 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:35:58,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1349,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:35:58,153 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:35:58,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:35:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash 920603198, now seen corresponding path program 45 times [2021-06-05 06:35:58,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:35:58,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366255759] [2021-06-05 06:35:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:35:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:35:58,556 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 06:35:58,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:35:58,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366255759] [2021-06-05 06:35:58,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366255759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:35:58,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341093247] [2021-06-05 06:35:58,556 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 06:35:58,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:35:58,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:35:58,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:35:58,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:35:58,880 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:35:59,082 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:35:59,364 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:35:59,730 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 06:35:59,730 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 06:35:59,738 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:35:59,783 INFO L354 Elim1Store]: treesize reduction 29, result has 40.8 percent of original size [2021-06-05 06:35:59,783 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 06:35:59,785 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:00,800 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2021-06-05 06:36:00,801 INFO L628 ElimStorePlain]: treesize reduction 23, result has 97.5 percent of original size [2021-06-05 06:36:00,865 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-06-05 06:36:00,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:00,868 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:00,916 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-06-05 06:36:00,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:00,919 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:01,417 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-06-05 06:36:01,417 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:01,469 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:01,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:01,491 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:01,542 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-06-05 06:36:01,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:01,546 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:03,071 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 185 DAG size of output: 168 [2021-06-05 06:36:03,072 INFO L628 ElimStorePlain]: treesize reduction 92, result has 90.6 percent of original size [2021-06-05 06:36:03,140 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 06:36:03,140 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 06:36:03,150 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:03,213 INFO L354 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size [2021-06-05 06:36:03,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:03,225 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:04,253 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 181 DAG size of output: 172 [2021-06-05 06:36:04,254 INFO L628 ElimStorePlain]: treesize reduction 83, result has 91.5 percent of original size [2021-06-05 06:36:04,313 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2021-06-05 06:36:04,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:04,320 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:04,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:04,357 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 06:36:04,388 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:04,861 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-06-05 06:36:04,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:04,924 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 06:36:04,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:04,932 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:04,985 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 06:36:04,985 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 06:36:05,002 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:05,935 WARN L205 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 152 [2021-06-05 06:36:05,935 INFO L628 ElimStorePlain]: treesize reduction 37, result has 95.8 percent of original size [2021-06-05 06:36:05,992 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2021-06-05 06:36:05,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:06,000 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:06,046 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-06-05 06:36:06,046 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 06:36:06,050 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:06,490 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 06:36:06,490 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:06,539 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-06-05 06:36:06,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:06,543 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:06,602 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-06-05 06:36:06,602 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 06:36:06,619 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:07,448 WARN L205 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 136 [2021-06-05 06:36:07,448 INFO L628 ElimStorePlain]: treesize reduction 68, result has 91.9 percent of original size [2021-06-05 06:36:07,560 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 06:36:07,561 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 17 variables, input treesize:913, output treesize:2294 [2021-06-05 06:36:08,194 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 69 [2021-06-05 06:36:08,354 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-06-05 06:36:08,389 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 06:36:08,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341093247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:08,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:08,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2021-06-05 06:36:08,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567643755] [2021-06-05 06:36:08,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:36:08,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:08,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:36:08,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:36:08,389 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 06:36:10,758 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 06:36:11,135 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-05 06:36:11,819 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 89 [2021-06-05 06:36:12,200 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 06:36:12,543 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 06:36:12,699 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 33 [2021-06-05 06:36:13,277 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 90 [2021-06-05 06:36:13,754 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 92 [2021-06-05 06:36:14,643 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 96 [2021-06-05 06:36:15,015 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-06-05 06:36:15,239 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2021-06-05 06:36:15,382 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2021-06-05 06:36:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:15,511 INFO L93 Difference]: Finished difference Result 3086 states and 9767 transitions. [2021-06-05 06:36:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:36:15,511 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 06:36:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:15,515 INFO L225 Difference]: With dead ends: 3086 [2021-06-05 06:36:15,515 INFO L226 Difference]: Without dead ends: 3056 [2021-06-05 06:36:15,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 7563.6ms TimeCoverageRelationStatistics Valid=696, Invalid=4134, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:36:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2021-06-05 06:36:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 1671. [2021-06-05 06:36:15,537 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 06:36:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 5636 transitions. [2021-06-05 06:36:15,540 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 5636 transitions. Word has length 26 [2021-06-05 06:36:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:15,540 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 5636 transitions. [2021-06-05 06:36:15,540 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 06:36:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 5636 transitions. [2021-06-05 06:36:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:15,542 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:15,542 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:15,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1419,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:36:15,757 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:15,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:15,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1936410854, now seen corresponding path program 28 times [2021-06-05 06:36:15,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:15,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031335147] [2021-06-05 06:36:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:15,938 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 06:36:16,320 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 06:36:16,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:16,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031335147] [2021-06-05 06:36:16,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031335147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:16,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874880056] [2021-06-05 06:36:16,321 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 06:36:16,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:36:16,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:36:16,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:36:16,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:16,637 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:36:16,867 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 06:36:16,932 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_185], 2=[v_prenex_186, v_prenex_187], 3=[A]} [2021-06-05 06:36:16,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:16,936 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 06:36:16,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:17,051 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 06:36:17,052 INFO L628 ElimStorePlain]: treesize reduction 94, result has 60.3 percent of original size [2021-06-05 06:36:17,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:17,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:17,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:17,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:36:17,058 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:17,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:17,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:17,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:17,062 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:17,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:17,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:17,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:17,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:36:17,107 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:17,143 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:17,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:17,146 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 06:36:17,147 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:17,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:17,183 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 06:36:17,183 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:251, output treesize:56 [2021-06-05 06:36:17,247 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 06:36:17,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874880056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:17,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:17,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:36:17,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053259377] [2021-06-05 06:36:17,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:36:17,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:17,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:36:17,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:36:17,248 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 06:36:17,828 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-06-05 06:36:18,604 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-05 06:36:18,739 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 06:36:18,956 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2021-06-05 06:36:19,184 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-06-05 06:36:19,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:19,350 INFO L93 Difference]: Finished difference Result 2244 states and 7296 transitions. [2021-06-05 06:36:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:36:19,350 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 06:36:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:19,353 INFO L225 Difference]: With dead ends: 2244 [2021-06-05 06:36:19,353 INFO L226 Difference]: Without dead ends: 2229 [2021-06-05 06:36:19,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2497.8ms TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:36:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-06-05 06:36:19,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1676. [2021-06-05 06:36:19,370 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 06:36:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 5655 transitions. [2021-06-05 06:36:19,372 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 5655 transitions. Word has length 26 [2021-06-05 06:36:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:19,372 INFO L482 AbstractCegarLoop]: Abstraction has 1676 states and 5655 transitions. [2021-06-05 06:36:19,372 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 06:36:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 5655 transitions. [2021-06-05 06:36:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:19,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:19,374 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:19,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1636,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:36:19,575 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:19,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:19,575 INFO L82 PathProgramCache]: Analyzing trace with hash 318878074, now seen corresponding path program 29 times [2021-06-05 06:36:19,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:19,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653786156] [2021-06-05 06:36:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:19,916 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 06:36:19,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:19,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653786156] [2021-06-05 06:36:19,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653786156] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:19,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005007920] [2021-06-05 06:36:19,916 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 06:36:19,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:36:19,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:36:19,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:36:19,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:20,292 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 06:36:20,489 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:36:20,539 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 06:36:20,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:20,552 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:36:20,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:20,553 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:20,663 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:36:20,663 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:20,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:20,674 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:20,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:20,676 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:20,785 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:36:20,785 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:20,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:20,796 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:20,797 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 26 treesize of output 24 [2021-06-05 06:36:20,798 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:20,907 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:36:20,907 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:20,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:20,918 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:20,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:20,922 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:21,025 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:36:21,025 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:21,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:21,036 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:21,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:21,037 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:21,134 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:21,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:21,144 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:36:21,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:21,145 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:21,249 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 06:36:21,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:21,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:21,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:21,260 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:36:21,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:21,261 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:21,348 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:21,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:21,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:21,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:21,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:21,361 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:21,445 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:21,450 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 06:36:21,450 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:317, output treesize:184 [2021-06-05 06:36:21,629 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 06:36:21,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005007920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:21,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:21,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:36:21,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257539477] [2021-06-05 06:36:21,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:36:21,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:21,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:36:21,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:36:21,630 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 06:36:21,940 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-06-05 06:36:22,936 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-06-05 06:36:23,439 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2021-06-05 06:36:23,836 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 106 [2021-06-05 06:36:24,255 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2021-06-05 06:36:24,736 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 110 [2021-06-05 06:36:25,190 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2021-06-05 06:36:25,420 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-06-05 06:36:25,748 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2021-06-05 06:36:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:25,904 INFO L93 Difference]: Finished difference Result 2686 states and 8637 transitions. [2021-06-05 06:36:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:36:25,904 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 06:36:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:25,907 INFO L225 Difference]: With dead ends: 2686 [2021-06-05 06:36:25,907 INFO L226 Difference]: Without dead ends: 2652 [2021-06-05 06:36:25,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 4267.4ms TimeCoverageRelationStatistics Valid=371, Invalid=1435, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:36:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-06-05 06:36:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1683. [2021-06-05 06:36:25,935 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 06:36:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 5688 transitions. [2021-06-05 06:36:25,938 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 5688 transitions. Word has length 26 [2021-06-05 06:36:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:25,938 INFO L482 AbstractCegarLoop]: Abstraction has 1683 states and 5688 transitions. [2021-06-05 06:36:25,938 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 06:36:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 5688 transitions. [2021-06-05 06:36:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:25,940 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:25,940 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:26,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1647 [2021-06-05 06:36:26,141 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2122915566, now seen corresponding path program 46 times [2021-06-05 06:36:26,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:26,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502063914] [2021-06-05 06:36:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:26,450 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 06:36:26,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:26,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502063914] [2021-06-05 06:36:26,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502063914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:26,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864582920] [2021-06-05 06:36:26,450 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 06:36:26,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:36:26,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:36:26,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:36:26,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:26,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:26,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:26,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:26,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:26,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:26,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:26,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:26,999 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:27,008 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:27,019 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:27,029 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,038 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 37 treesize of output 19 [2021-06-05 06:36:27,039 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,047 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 43 treesize of output 16 [2021-06-05 06:36:27,048 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:27,058 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,065 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 32 treesize of output 16 [2021-06-05 06:36:27,066 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:27,075 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:27,084 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:27,092 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,099 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 34 treesize of output 16 [2021-06-05 06:36:27,100 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:27,108 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:27,116 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:27,123 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:27,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:27,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:27,129 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:27,178 INFO L628 ElimStorePlain]: treesize reduction 216, result has 14.6 percent of original size [2021-06-05 06:36:27,179 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 06:36:27,179 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:31 [2021-06-05 06:36:27,211 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 06:36:27,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864582920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:27,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:27,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:36:27,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130852740] [2021-06-05 06:36:27,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:36:27,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:27,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:36:27,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:36:27,212 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 06:36:28,477 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-06-05 06:36:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:29,714 INFO L93 Difference]: Finished difference Result 3384 states and 10825 transitions. [2021-06-05 06:36:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:36:29,714 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 06:36:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:29,718 INFO L225 Difference]: With dead ends: 3384 [2021-06-05 06:36:29,718 INFO L226 Difference]: Without dead ends: 3348 [2021-06-05 06:36:29,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 2487.6ms TimeCoverageRelationStatistics Valid=538, Invalid=2432, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:36:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2021-06-05 06:36:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 1796. [2021-06-05 06:36:29,741 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 06:36:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 6110 transitions. [2021-06-05 06:36:29,744 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 6110 transitions. Word has length 26 [2021-06-05 06:36:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:29,744 INFO L482 AbstractCegarLoop]: Abstraction has 1796 states and 6110 transitions. [2021-06-05 06:36:29,744 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 06:36:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 6110 transitions. [2021-06-05 06:36:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:29,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:29,746 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:29,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1664,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:36:29,947 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:29,947 INFO L82 PathProgramCache]: Analyzing trace with hash -338403078, now seen corresponding path program 47 times [2021-06-05 06:36:29,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:29,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728005443] [2021-06-05 06:36:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:30,287 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 06:36:30,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:30,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728005443] [2021-06-05 06:36:30,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728005443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:30,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850629002] [2021-06-05 06:36:30,287 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 06:36:30,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:36:30,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:36:30,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:36:30,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:30,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,760 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 06:36:30,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 37 [2021-06-05 06:36:30,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,792 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2021-06-05 06:36:30,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:30,796 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,819 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 06:36:30,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:30,823 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,846 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 06:36:30,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:30,847 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,871 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 06:36:30,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:30,872 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,888 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:30,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:30,889 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,913 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 06:36:30,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:30,914 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,930 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:30,930 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 39 treesize of output 1 [2021-06-05 06:36:30,931 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,946 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:30,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:30,947 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,962 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:30,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:30,963 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,985 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size [2021-06-05 06:36:30,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:30,987 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:30,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:30,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,001 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:31,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:31,002 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,016 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:31,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:31,016 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:31,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,031 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:31,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:31,031 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,063 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:31,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:31,068 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:31,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:31,077 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:36:31,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:31,078 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:31,236 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2021-06-05 06:36:31,237 INFO L628 ElimStorePlain]: treesize reduction 116, result has 51.7 percent of original size [2021-06-05 06:36:31,239 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 06:36:31,239 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133 [2021-06-05 06:36:31,361 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 06:36:31,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850629002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:31,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:31,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:36:31,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933304722] [2021-06-05 06:36:31,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:36:31,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:31,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:36:31,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:36:31,362 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 06:36:32,574 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2021-06-05 06:36:33,044 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-06-05 06:36:33,475 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-06-05 06:36:33,940 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2021-06-05 06:36:34,178 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2021-06-05 06:36:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:34,413 INFO L93 Difference]: Finished difference Result 3832 states and 12118 transitions. [2021-06-05 06:36:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:36:34,413 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 06:36:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:34,418 INFO L225 Difference]: With dead ends: 3832 [2021-06-05 06:36:34,418 INFO L226 Difference]: Without dead ends: 3775 [2021-06-05 06:36:34,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 3013.4ms TimeCoverageRelationStatistics Valid=649, Invalid=2657, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:36:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-06-05 06:36:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 1819. [2021-06-05 06:36:34,444 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 06:36:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 6195 transitions. [2021-06-05 06:36:34,447 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 6195 transitions. Word has length 26 [2021-06-05 06:36:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:34,447 INFO L482 AbstractCegarLoop]: Abstraction has 1819 states and 6195 transitions. [2021-06-05 06:36:34,447 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 06:36:34,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 6195 transitions. [2021-06-05 06:36:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:34,449 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:34,449 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:34,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1770 [2021-06-05 06:36:34,649 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1512099618, now seen corresponding path program 30 times [2021-06-05 06:36:34,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:34,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863164743] [2021-06-05 06:36:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:36:35,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:35,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863164743] [2021-06-05 06:36:35,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863164743] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:35,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693403356] [2021-06-05 06:36:35,131 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 06:36:35,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:36:35,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:36:35,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:36:35,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:35,554 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:36:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:36,004 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:36,006 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:36,144 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-05 06:36:36,144 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:36,164 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:36:36,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:36,166 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:36,300 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 06:36:36,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:36,322 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:36:36,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:36:36,325 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:36,457 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-05 06:36:36,457 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:36,479 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:36:36,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:36,482 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:36,611 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 06:36:36,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:36,633 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:36:36,633 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 26 treesize of output 28 [2021-06-05 06:36:36,634 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:36,767 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-05 06:36:36,767 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:36,785 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:36:36,785 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 21 treesize of output 21 [2021-06-05 06:36:36,786 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:36,921 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 06:36:36,922 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:36,938 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:36,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:36,940 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:37,082 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 06:36:37,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:37,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:37,101 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:37,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:36:37,105 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:37,230 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:36:37,230 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:37,252 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 06:36:37,253 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:373, output treesize:497 [2021-06-05 06:36:37,540 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-05 06:36:37,768 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 06:36:37,878 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 06:36:37,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693403356] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:37,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:37,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:36:37,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383015165] [2021-06-05 06:36:37,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:36:37,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:37,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:36:37,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:36:37,879 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 06:36:38,099 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 28 [2021-06-05 06:36:38,826 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2021-06-05 06:36:38,992 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-05 06:36:39,306 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2021-06-05 06:36:39,605 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-06-05 06:36:40,144 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-06-05 06:36:40,596 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-06-05 06:36:40,962 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 60 [2021-06-05 06:36:41,223 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-06-05 06:36:41,743 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2021-06-05 06:36:41,961 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:36:42,185 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-06-05 06:36:42,671 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-06-05 06:36:43,279 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 120 [2021-06-05 06:36:43,716 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 133 [2021-06-05 06:36:44,555 WARN L205 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 140 [2021-06-05 06:36:44,930 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 99 [2021-06-05 06:36:45,318 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2021-06-05 06:36:45,681 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2021-06-05 06:36:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:45,738 INFO L93 Difference]: Finished difference Result 2671 states and 8693 transitions. [2021-06-05 06:36:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:36:45,738 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 06:36:45,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:45,741 INFO L225 Difference]: With dead ends: 2671 [2021-06-05 06:36:45,742 INFO L226 Difference]: Without dead ends: 2637 [2021-06-05 06:36:45,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 8296.4ms TimeCoverageRelationStatistics Valid=388, Invalid=2162, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:36:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-06-05 06:36:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 1837. [2021-06-05 06:36:45,762 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 06:36:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 6264 transitions. [2021-06-05 06:36:45,765 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 6264 transitions. Word has length 26 [2021-06-05 06:36:45,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:45,766 INFO L482 AbstractCegarLoop]: Abstraction has 1837 states and 6264 transitions. [2021-06-05 06:36:45,766 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 06:36:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 6264 transitions. [2021-06-05 06:36:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:45,768 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:45,768 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:45,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1885 [2021-06-05 06:36:45,968 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash 461518918, now seen corresponding path program 31 times [2021-06-05 06:36:45,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:45,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932106534] [2021-06-05 06:36:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:46,305 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 06:36:46,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:46,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932106534] [2021-06-05 06:36:46,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932106534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:46,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044785402] [2021-06-05 06:36:46,305 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 06:36:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:46,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:36:46,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:46,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,523 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:46,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:46,524 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,533 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:36:46,533 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,543 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:46,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:46,547 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,558 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:36:46,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:46,559 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,571 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:36:46,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:46,572 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,581 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:46,582 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,591 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:46,592 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,601 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:46,601 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,609 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:46,610 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,619 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:46,619 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,628 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,628 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 47 treesize of output 25 [2021-06-05 06:36:46,629 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:46,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 06:36:46,641 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:46,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:46,654 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,665 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:46,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:46,667 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,677 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:36:46,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:46,678 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:46,684 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:36:46,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:36:46,685 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:46,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:46,767 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:36:46,767 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:865, output treesize:221 [2021-06-05 06:36:46,978 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 06:36:46,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044785402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:46,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:46,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:36:46,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137654053] [2021-06-05 06:36:46,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:36:46,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:46,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:36:46,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:36:46,979 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 06:36:47,771 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-06-05 06:36:48,620 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-06-05 06:36:48,952 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-05 06:36:49,123 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-06-05 06:36:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:49,272 INFO L93 Difference]: Finished difference Result 2618 states and 8665 transitions. [2021-06-05 06:36:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:36:49,272 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 06:36:49,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:49,275 INFO L225 Difference]: With dead ends: 2618 [2021-06-05 06:36:49,275 INFO L226 Difference]: Without dead ends: 2584 [2021-06-05 06:36:49,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2263.1ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:36:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-06-05 06:36:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1832. [2021-06-05 06:36:49,303 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 06:36:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 6243 transitions. [2021-06-05 06:36:49,306 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 6243 transitions. Word has length 26 [2021-06-05 06:36:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:49,306 INFO L482 AbstractCegarLoop]: Abstraction has 1832 states and 6243 transitions. [2021-06-05 06:36:49,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:36:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 6243 transitions. [2021-06-05 06:36:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:49,308 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:49,308 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:49,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1945,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:36:49,508 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:49,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:49,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1795376066, now seen corresponding path program 32 times [2021-06-05 06:36:49,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:49,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293964295] [2021-06-05 06:36:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:49,896 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 06:36:49,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:49,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293964295] [2021-06-05 06:36:49,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293964295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:49,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281622524] [2021-06-05 06:36:49,896 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 06:36:49,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:36:49,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:36:49,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:36:49,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:50,283 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:50,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:50,287 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,304 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:36:50,304 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:36:50,307 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,444 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 06:36:50,444 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:50,460 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:50,460 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 33 treesize of output 35 [2021-06-05 06:36:50,461 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,473 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:50,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:50,476 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,605 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:36:50,605 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:50,622 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:36:50,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:36:50,624 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,639 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:36:50,640 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:36:50,643 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,762 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:36:50,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:50,780 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:36:50,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:50,781 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,794 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:36:50,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:50,795 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:50,909 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 06:36:50,909 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:50,922 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 06:36:50,922 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:349, output treesize:430 [2021-06-05 06:36:51,154 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-06-05 06:36:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:36:51,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281622524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:51,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:51,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:36:51,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027221742] [2021-06-05 06:36:51,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:36:51,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:51,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:36:51,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:36:51,401 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 06:36:51,999 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-05 06:36:52,127 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2021-06-05 06:36:52,330 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-06-05 06:36:52,912 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-06-05 06:36:53,248 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-05 06:36:53,509 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2021-06-05 06:36:53,860 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-06-05 06:36:54,218 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-06-05 06:36:54,483 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-05 06:36:54,763 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-06-05 06:36:55,079 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-06-05 06:36:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:55,377 INFO L93 Difference]: Finished difference Result 2647 states and 8625 transitions. [2021-06-05 06:36:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:36:55,377 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 06:36:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:55,380 INFO L225 Difference]: With dead ends: 2647 [2021-06-05 06:36:55,381 INFO L226 Difference]: Without dead ends: 2578 [2021-06-05 06:36:55,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 4264.4ms TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:36:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-06-05 06:36:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1826. [2021-06-05 06:36:55,407 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 06:36:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 6219 transitions. [2021-06-05 06:36:55,410 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 6219 transitions. Word has length 26 [2021-06-05 06:36:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:55,412 INFO L482 AbstractCegarLoop]: Abstraction has 1826 states and 6219 transitions. [2021-06-05 06:36:55,412 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 06:36:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 6219 transitions. [2021-06-05 06:36:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:55,416 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:55,416 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:55,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1963,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:36:55,617 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1102392532, now seen corresponding path program 48 times [2021-06-05 06:36:55,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:55,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385756343] [2021-06-05 06:36:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:56,143 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 06:36:56,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:56,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385756343] [2021-06-05 06:36:56,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385756343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:56,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562108634] [2021-06-05 06:36:56,143 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 06:36:56,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:36:56,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:36:56,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:36:56,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:56,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,598 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 30 treesize of output 16 [2021-06-05 06:36:56,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,605 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,611 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,617 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,623 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,629 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 30 treesize of output 16 [2021-06-05 06:36:56,630 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:56,637 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,643 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:36:56,650 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,656 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 23 treesize of output 7 [2021-06-05 06:36:56,658 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,664 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 32 treesize of output 16 [2021-06-05 06:36:56,664 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:36:56,671 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,678 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,684 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,691 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:56,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:56,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:36:56,695 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:56,724 INFO L628 ElimStorePlain]: treesize reduction 34, result has 49.3 percent of original size [2021-06-05 06:36:56,725 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 06:36:56,725 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:21 [2021-06-05 06:36:56,751 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 06:36:56,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562108634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:56,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:56,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:36:56,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976286703] [2021-06-05 06:36:56,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:36:56,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:56,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:36:56,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:36:56,752 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 06:36:57,272 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2021-06-05 06:36:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:36:58,289 INFO L93 Difference]: Finished difference Result 2336 states and 7723 transitions. [2021-06-05 06:36:58,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:36:58,290 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 06:36:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:36:58,292 INFO L225 Difference]: With dead ends: 2336 [2021-06-05 06:36:58,292 INFO L226 Difference]: Without dead ends: 2314 [2021-06-05 06:36:58,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1758.4ms TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:36:58,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-06-05 06:36:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 1818. [2021-06-05 06:36:58,310 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 06:36:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6191 transitions. [2021-06-05 06:36:58,313 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6191 transitions. Word has length 26 [2021-06-05 06:36:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:36:58,313 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6191 transitions. [2021-06-05 06:36:58,313 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 06:36:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6191 transitions. [2021-06-05 06:36:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:36:58,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:36:58,315 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:36:58,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2004 [2021-06-05 06:36:58,515 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:36:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:36:58,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2027886398, now seen corresponding path program 49 times [2021-06-05 06:36:58,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:36:58,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018289622] [2021-06-05 06:36:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:36:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:58,803 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-06-05 06:36:59,046 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 06:36:59,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:36:59,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018289622] [2021-06-05 06:36:59,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018289622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:59,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530635090] [2021-06-05 06:36:59,046 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 06:36:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:36:59,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:36:59,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:36:59,371 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 06:36:59,417 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_263, v_prenex_259], 5=[A, v_prenex_261]} [2021-06-05 06:36:59,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:59,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:59,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:59,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:59,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:59,511 INFO L628 ElimStorePlain]: treesize reduction 150, result has 45.5 percent of original size [2021-06-05 06:36:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:59,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:59,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:59,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:36:59,517 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:59,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:59,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:59,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:36:59,558 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:59,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:59,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:36:59,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:36:59,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:36:59,587 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:36:59,608 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:36:59,610 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 06:36:59,610 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:314, output treesize:41 [2021-06-05 06:36:59,660 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 06:36:59,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530635090] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:36:59,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:36:59,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:36:59,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490721214] [2021-06-05 06:36:59,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:36:59,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:36:59,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:36:59,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:36:59,660 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 06:37:01,474 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2021-06-05 06:37:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:37:02,122 INFO L93 Difference]: Finished difference Result 2526 states and 8350 transitions. [2021-06-05 06:37:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:37:02,122 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 06:37:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:37:02,125 INFO L225 Difference]: With dead ends: 2526 [2021-06-05 06:37:02,125 INFO L226 Difference]: Without dead ends: 2511 [2021-06-05 06:37:02,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2682.6ms TimeCoverageRelationStatistics Valid=534, Invalid=2222, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:37:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-06-05 06:37:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 1818. [2021-06-05 06:37:02,144 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 06:37:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6191 transitions. [2021-06-05 06:37:02,158 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6191 transitions. Word has length 26 [2021-06-05 06:37:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:37:02,158 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6191 transitions. [2021-06-05 06:37:02,158 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 06:37:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6191 transitions. [2021-06-05 06:37:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:37:02,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:37:02,160 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:37:02,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2098,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:37:02,361 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:37:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:37:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash 849981858, now seen corresponding path program 50 times [2021-06-05 06:37:02,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:37:02,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211096061] [2021-06-05 06:37:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:37:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:37:02,726 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 06:37:02,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:37:02,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211096061] [2021-06-05 06:37:02,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211096061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:02,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781463841] [2021-06-05 06:37:02,726 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 06:37:02,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:37:02,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:37:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:37:02,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:37:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:02,973 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:37:02,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:02,974 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:02,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:02,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:02,997 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:37:02,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:02,999 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,022 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:37:03,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:03,023 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,046 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:37:03,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:03,047 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,063 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:03,063 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,086 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:37:03,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:03,087 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,112 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:37:03,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 06:37:03,115 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,130 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,131 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 32 treesize of output 1 [2021-06-05 06:37:03,131 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,146 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:03,147 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,169 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:37:03,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:03,170 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,193 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:03,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:03,199 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,214 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:37:03,214 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,229 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:03,229 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,244 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:03,244 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,259 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:03,259 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:03,267 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:03,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:37:03,268 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:03,373 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2021-06-05 06:37:03,374 INFO L628 ElimStorePlain]: treesize reduction 76, result has 55.0 percent of original size [2021-06-05 06:37:03,375 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:37:03,375 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:753, output treesize:93 [2021-06-05 06:37:03,462 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 06:37:03,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781463841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:03,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:37:03,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-06-05 06:37:03,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196832784] [2021-06-05 06:37:03,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:37:03,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:37:03,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:37:03,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:37:03,462 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 06:37:05,933 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-05 06:37:06,311 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2021-06-05 06:37:06,726 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-06-05 06:37:06,952 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-06-05 06:37:07,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:37:07,322 INFO L93 Difference]: Finished difference Result 3017 states and 9720 transitions. [2021-06-05 06:37:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:37:07,322 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 06:37:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:37:07,326 INFO L225 Difference]: With dead ends: 3017 [2021-06-05 06:37:07,326 INFO L226 Difference]: Without dead ends: 2970 [2021-06-05 06:37:07,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 3580.1ms TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:37:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2021-06-05 06:37:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1841. [2021-06-05 06:37:07,356 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 06:37:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 6250 transitions. [2021-06-05 06:37:07,359 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 6250 transitions. Word has length 26 [2021-06-05 06:37:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:37:07,359 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 6250 transitions. [2021-06-05 06:37:07,359 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 06:37:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 6250 transitions. [2021-06-05 06:37:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:37:07,361 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:37:07,361 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:37:07,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2112 [2021-06-05 06:37:07,562 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:37:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:37:07,562 INFO L82 PathProgramCache]: Analyzing trace with hash -696255298, now seen corresponding path program 51 times [2021-06-05 06:37:07,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:37:07,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550253827] [2021-06-05 06:37:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:37:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:37:07,890 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 06:37:07,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:37:07,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550253827] [2021-06-05 06:37:07,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550253827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:07,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166497316] [2021-06-05 06:37:07,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:37:07,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:37:07,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:37:07,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:37:07,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:37:08,315 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 06:37:08,513 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 06:37:08,573 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:37:08,573 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 51 [2021-06-05 06:37:08,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:08,631 INFO L354 Elim1Store]: treesize reduction 25, result has 39.0 percent of original size [2021-06-05 06:37:08,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:08,633 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:09,593 WARN L205 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2021-06-05 06:37:09,593 INFO L628 ElimStorePlain]: treesize reduction 5, result has 99.5 percent of original size [2021-06-05 06:37:09,638 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:09,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:09,650 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:09,696 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:37:09,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:09,700 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:11,119 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 183 DAG size of output: 171 [2021-06-05 06:37:11,120 INFO L628 ElimStorePlain]: treesize reduction 45, result has 95.3 percent of original size [2021-06-05 06:37:11,178 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:37:11,179 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 06:37:11,188 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:11,240 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:37:11,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 06:37:11,248 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:12,195 WARN L205 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 176 [2021-06-05 06:37:12,196 INFO L628 ElimStorePlain]: treesize reduction 44, result has 95.4 percent of original size [2021-06-05 06:37:12,252 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:37:12,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:12,259 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:12,301 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:37:12,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 48 [2021-06-05 06:37:12,318 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:13,232 WARN L205 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 167 [2021-06-05 06:37:13,233 INFO L628 ElimStorePlain]: treesize reduction 37, result has 96.0 percent of original size [2021-06-05 06:37:13,283 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:37:13,283 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 47 [2021-06-05 06:37:13,286 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:13,325 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:37:13,325 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 06:37:13,329 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:13,777 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-06-05 06:37:13,777 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:13,818 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-05 06:37:13,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:13,820 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:13,861 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:37:13,861 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-05 06:37:13,863 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:14,300 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-06-05 06:37:14,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:14,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:14,334 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:14,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:14,348 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:14,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:14,387 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:37:14,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:14,393 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:14,805 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-05 06:37:14,805 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:14,851 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:37:14,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:14,862 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:14,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:14,876 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:37:14,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:14,877 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:15,253 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-06-05 06:37:15,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:15,295 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 06:37:15,295 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:957, output treesize:1656 [2021-06-05 06:37:15,802 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2021-06-05 06:37:16,069 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-06-05 06:37:16,218 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 06:37:16,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166497316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:16,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:37:16,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 06:37:16,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494225060] [2021-06-05 06:37:16,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:37:16,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:37:16,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:37:16,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:37:16,219 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 06:37:16,533 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-05 06:37:16,872 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 41 [2021-06-05 06:37:17,405 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 47 [2021-06-05 06:37:17,850 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-06-05 06:37:18,319 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 06:37:18,467 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-06-05 06:37:18,957 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2021-06-05 06:37:19,400 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-06-05 06:37:19,758 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2021-06-05 06:37:19,914 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2021-06-05 06:37:20,197 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 61 [2021-06-05 06:37:20,758 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 76 [2021-06-05 06:37:21,013 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2021-06-05 06:37:21,239 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 50 [2021-06-05 06:37:21,974 WARN L205 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2021-06-05 06:37:22,818 WARN L205 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2021-06-05 06:37:23,123 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2021-06-05 06:37:23,570 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 06:37:23,778 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 33 [2021-06-05 06:37:23,973 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 39 [2021-06-05 06:37:24,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:37:24,089 INFO L93 Difference]: Finished difference Result 3177 states and 10241 transitions. [2021-06-05 06:37:24,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:37:24,089 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 06:37:24,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:37:24,093 INFO L225 Difference]: With dead ends: 3177 [2021-06-05 06:37:24,093 INFO L226 Difference]: Without dead ends: 3132 [2021-06-05 06:37:24,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 8378.0ms TimeCoverageRelationStatistics Valid=674, Invalid=2986, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:37:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2021-06-05 06:37:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 1888. [2021-06-05 06:37:24,116 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 06:37:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6415 transitions. [2021-06-05 06:37:24,119 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6415 transitions. Word has length 26 [2021-06-05 06:37:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:37:24,119 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6415 transitions. [2021-06-05 06:37:24,119 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 06:37:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6415 transitions. [2021-06-05 06:37:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:37:24,121 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:37:24,121 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:37:24,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2138 [2021-06-05 06:37:24,322 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:37:24,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:37:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1813857782, now seen corresponding path program 52 times [2021-06-05 06:37:24,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:37:24,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448004538] [2021-06-05 06:37:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:37:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:37:24,743 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 06:37:24,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:37:24,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448004538] [2021-06-05 06:37:24,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448004538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:24,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57579208] [2021-06-05 06:37:24,744 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 06:37:24,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:37:24,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:37:24,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:37:24,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:37:25,069 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-05 06:37:25,196 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_287], 6=[v_prenex_285, v_prenex_289]} [2021-06-05 06:37:25,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:25,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:25,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:25,205 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:25,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:25,210 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 34 treesize of output 13 [2021-06-05 06:37:25,211 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:25,307 INFO L628 ElimStorePlain]: treesize reduction 154, result has 43.2 percent of original size [2021-06-05 06:37:25,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,311 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 06:37:25,312 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:25,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:25,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:25,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:25,360 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:25,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:25,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:25,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:25,393 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 25 treesize of output 13 [2021-06-05 06:37:25,394 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:25,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:25,420 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 06:37:25,420 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:337, output treesize:55 [2021-06-05 06:37:25,462 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 06:37:25,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57579208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:25,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:37:25,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:37:25,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612476930] [2021-06-05 06:37:25,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:37:25,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:37:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:37:25,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:37:25,463 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 06:37:26,654 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2021-06-05 06:37:26,825 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2021-06-05 06:37:27,280 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-06-05 06:37:27,439 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 06:37:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:37:27,623 INFO L93 Difference]: Finished difference Result 2395 states and 7935 transitions. [2021-06-05 06:37:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:37:27,623 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 06:37:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:37:27,626 INFO L225 Difference]: With dead ends: 2395 [2021-06-05 06:37:27,626 INFO L226 Difference]: Without dead ends: 2380 [2021-06-05 06:37:27,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 2325.1ms TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:37:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-06-05 06:37:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1886. [2021-06-05 06:37:27,644 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 06:37:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6408 transitions. [2021-06-05 06:37:27,647 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6408 transitions. Word has length 26 [2021-06-05 06:37:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:37:27,647 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6408 transitions. [2021-06-05 06:37:27,647 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 06:37:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6408 transitions. [2021-06-05 06:37:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:37:27,649 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:37:27,649 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:37:27,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2263 [2021-06-05 06:37:27,849 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:37:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:37:27,850 INFO L82 PathProgramCache]: Analyzing trace with hash -782211534, now seen corresponding path program 53 times [2021-06-05 06:37:27,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:37:27,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344866935] [2021-06-05 06:37:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:37:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:37:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:37:28,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:37:28,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344866935] [2021-06-05 06:37:28,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344866935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:28,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486289220] [2021-06-05 06:37:28,208 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 06:37:28,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:37:28,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:37:28,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:37:28,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:37:28,731 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-06-05 06:37:28,926 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 06:37:29,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,143 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:37:29,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:29,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:29,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,170 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:29,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:29,176 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:29,543 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-06-05 06:37:29,544 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,585 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 06:37:29,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:29,589 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:29,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,614 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:37:29,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:29,617 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:29,974 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-06-05 06:37:29,975 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:29,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:29,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:30,008 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:37:30,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 06:37:30,010 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:30,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:30,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:30,036 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:37:30,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:30,037 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:30,384 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-05 06:37:30,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:30,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:30,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:30,417 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:37:30,417 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 41 treesize of output 33 [2021-06-05 06:37:30,419 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:30,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:30,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:30,443 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:30,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:30,449 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:31,061 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2021-06-05 06:37:31,062 INFO L628 ElimStorePlain]: treesize reduction 36, result has 94.8 percent of original size [2021-06-05 06:37:31,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,091 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:31,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:31,097 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:31,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,122 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:37:31,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:31,125 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:31,691 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2021-06-05 06:37:31,692 INFO L628 ElimStorePlain]: treesize reduction 38, result has 94.0 percent of original size [2021-06-05 06:37:31,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,719 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:37:31,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-05 06:37:31,720 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:31,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:31,744 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:37:31,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:31,747 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:32,011 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:37:32,011 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:32,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,042 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:37:32,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:32,045 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:32,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,057 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:37:32,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:32,058 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:32,272 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:37:32,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:32,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,298 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:37:32,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:37:32,299 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:32,320 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:37:32,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:37:32,324 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:32,693 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2021-06-05 06:37:32,693 INFO L628 ElimStorePlain]: treesize reduction 32, result has 92.7 percent of original size [2021-06-05 06:37:32,706 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 06:37:32,706 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:841, output treesize:391 [2021-06-05 06:37:32,876 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 06:37:32,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486289220] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:32,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:37:32,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 06:37:32,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188552226] [2021-06-05 06:37:32,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:37:32,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:37:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:37:32,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:37:32,877 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 06:37:33,199 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 06:37:35,729 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-06-05 06:37:49,114 WARN L205 SmtUtils]: Spent 13.18 s on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-06-05 06:37:49,985 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 154 [2021-06-05 06:37:50,184 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-05 06:37:50,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:37:50,442 INFO L93 Difference]: Finished difference Result 2712 states and 8977 transitions. [2021-06-05 06:37:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:37:50,443 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 06:37:50,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:37:50,446 INFO L225 Difference]: With dead ends: 2712 [2021-06-05 06:37:50,446 INFO L226 Difference]: Without dead ends: 2682 [2021-06-05 06:37:50,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 18009.3ms TimeCoverageRelationStatistics Valid=434, Invalid=2116, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:37:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-06-05 06:37:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1886. [2021-06-05 06:37:50,466 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 06:37:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6408 transitions. [2021-06-05 06:37:50,469 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6408 transitions. Word has length 26 [2021-06-05 06:37:50,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:37:50,469 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6408 transitions. [2021-06-05 06:37:50,469 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 06:37:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6408 transitions. [2021-06-05 06:37:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:37:50,472 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:37:50,472 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:37:50,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2277 [2021-06-05 06:37:50,685 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:37:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:37:50,685 INFO L82 PathProgramCache]: Analyzing trace with hash 376151132, now seen corresponding path program 54 times [2021-06-05 06:37:50,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:37:50,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168494808] [2021-06-05 06:37:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:37:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:37:51,134 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 06:37:51,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:37:51,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168494808] [2021-06-05 06:37:51,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168494808] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:51,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574275241] [2021-06-05 06:37:51,134 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 06:37:51,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:37:51,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:37:51,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:37:51,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:37:51,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,365 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:37:51,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:51,369 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,395 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:37:51,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,398 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,413 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,414 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,429 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,429 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,454 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:37:51,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,457 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,480 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:51,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,485 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,500 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,500 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 34 treesize of output 1 [2021-06-05 06:37:51,501 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,515 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,515 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 32 treesize of output 1 [2021-06-05 06:37:51,516 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,531 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,531 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,553 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:37:51,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,554 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,569 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:37:51,570 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,584 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,585 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,600 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,600 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,615 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:37:51,615 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,629 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:37:51,629 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:51,637 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:37:51,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:37:51,638 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:51,675 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:51,676 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:37:51,676 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:753, output treesize:93 [2021-06-05 06:37:51,764 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 06:37:51,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574275241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:51,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:37:51,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:37:51,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141935366] [2021-06-05 06:37:51,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:37:51,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:37:51,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:37:51,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:37:51,765 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 06:37:52,583 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-06-05 06:37:53,083 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-06-05 06:37:53,997 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-06-05 06:37:54,303 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-06-05 06:37:54,506 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-06-05 06:37:54,663 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-06-05 06:37:54,847 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-06-05 06:37:55,199 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2021-06-05 06:37:55,377 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2021-06-05 06:37:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:37:55,584 INFO L93 Difference]: Finished difference Result 3398 states and 10882 transitions. [2021-06-05 06:37:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:37:55,585 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 [2021-06-05 06:37:55,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:37:55,588 INFO L225 Difference]: With dead ends: 3398 [2021-06-05 06:37:55,588 INFO L226 Difference]: Without dead ends: 3364 [2021-06-05 06:37:55,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 3763.1ms TimeCoverageRelationStatistics Valid=768, Invalid=2424, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:37:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2021-06-05 06:37:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 1892. [2021-06-05 06:37:55,612 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 06:37:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 6439 transitions. [2021-06-05 06:37:55,615 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 6439 transitions. Word has length 26 [2021-06-05 06:37:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:37:55,615 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 6439 transitions. [2021-06-05 06:37:55,615 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) [2021-06-05 06:37:55,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 6439 transitions. [2021-06-05 06:37:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:37:55,618 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:37:55,618 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:37:55,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2347 [2021-06-05 06:37:55,818 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:37:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:37:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash 871796194, now seen corresponding path program 33 times [2021-06-05 06:37:55,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:37:55,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156551565] [2021-06-05 06:37:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:37:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:37:56,174 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 06:37:56,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:37:56,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156551565] [2021-06-05 06:37:56,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156551565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:56,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006611481] [2021-06-05 06:37:56,175 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 06:37:56,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:37:56,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:37:56,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:37:56,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:37:56,644 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-06-05 06:37:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:56,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:56,763 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:37:56,763 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:56,911 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 06:37:56,911 INFO L628 ElimStorePlain]: treesize reduction 98, result has 60.6 percent of original size [2021-06-05 06:37:56,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:56,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:56,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:37:56,917 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:56,970 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:56,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:56,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:56,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:37:56,975 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:57,025 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:57,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:57,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:57,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:57,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:37:57,031 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:57,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:57,034 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 06:37:57,035 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:57,077 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:37:57,079 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 06:37:57,079 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:285, output treesize:51 [2021-06-05 06:37:57,127 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 06:37:57,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006611481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:57,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:37:57,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:37:57,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944730953] [2021-06-05 06:37:57,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:37:57,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:37:57,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:37:57,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:37:57,128 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 06:37:57,869 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-06-05 06:37:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:37:58,036 INFO L93 Difference]: Finished difference Result 2313 states and 7725 transitions. [2021-06-05 06:37:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:37:58,036 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 06:37:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:37:58,039 INFO L225 Difference]: With dead ends: 2313 [2021-06-05 06:37:58,039 INFO L226 Difference]: Without dead ends: 2298 [2021-06-05 06:37:58,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1353.5ms TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:37:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-06-05 06:37:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1884. [2021-06-05 06:37:58,056 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 06:37:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 6418 transitions. [2021-06-05 06:37:58,059 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 6418 transitions. Word has length 26 [2021-06-05 06:37:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:37:58,059 INFO L482 AbstractCegarLoop]: Abstraction has 1884 states and 6418 transitions. [2021-06-05 06:37:58,059 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 06:37:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 6418 transitions. [2021-06-05 06:37:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:37:58,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:37:58,061 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:37:58,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2376 [2021-06-05 06:37:58,261 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:37:58,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:37:58,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1200955766, now seen corresponding path program 34 times [2021-06-05 06:37:58,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:37:58,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60050476] [2021-06-05 06:37:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:37:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:37:58,608 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 06:37:58,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:37:58,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60050476] [2021-06-05 06:37:58,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60050476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:58,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931632888] [2021-06-05 06:37:58,609 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 06:37:58,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:37:58,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:37:58,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:37:58,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:37:58,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:37:58,940 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:58,946 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,951 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:37:58,952 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:37:58,958 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:58,964 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:37:58,972 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:58,979 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,984 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 26 treesize of output 13 [2021-06-05 06:37:58,985 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:58,992 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:58,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:58,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:58,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:37:58,998 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:59,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:59,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:59,004 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:59,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:59,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:59,010 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:59,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:59,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:37:59,015 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:59,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,020 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 [2021-06-05 06:37:59,020 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:59,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:37:59,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:37:59,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:37:59,024 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:37:59,093 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:37:59,094 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 06:37:59,094 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:37:59,142 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 06:37:59,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931632888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:37:59,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:37:59,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:37:59,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266553717] [2021-06-05 06:37:59,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:37:59,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:37:59,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:37:59,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:37:59,143 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 06:37:59,416 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-05 06:37:59,536 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2021-06-05 06:37:59,754 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2021-06-05 06:38:00,241 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-06-05 06:38:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:00,460 INFO L93 Difference]: Finished difference Result 2549 states and 8455 transitions. [2021-06-05 06:38:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:38:00,461 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 06:38:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:00,463 INFO L225 Difference]: With dead ends: 2549 [2021-06-05 06:38:00,464 INFO L226 Difference]: Without dead ends: 2534 [2021-06-05 06:38:00,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1473.8ms TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:38:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2021-06-05 06:38:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 1876. [2021-06-05 06:38:00,483 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 06:38:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 6389 transitions. [2021-06-05 06:38:00,486 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 6389 transitions. Word has length 26 [2021-06-05 06:38:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:00,486 INFO L482 AbstractCegarLoop]: Abstraction has 1876 states and 6389 transitions. [2021-06-05 06:38:00,486 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 06:38:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 6389 transitions. [2021-06-05 06:38:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:00,488 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:00,488 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:00,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2396,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:00,689 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:00,689 INFO L82 PathProgramCache]: Analyzing trace with hash -179287784, now seen corresponding path program 35 times [2021-06-05 06:38:00,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:00,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539401050] [2021-06-05 06:38:00,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:00,978 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 06:38:00,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:00,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539401050] [2021-06-05 06:38:00,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539401050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:00,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357769849] [2021-06-05 06:38:00,978 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 06:38:01,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:38:01,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:01,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:38:01,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:01,378 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-05 06:38:01,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:01,682 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:01,682 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 21 treesize of output 21 [2021-06-05 06:38:01,683 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:01,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:01,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:01,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:38:01,704 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:01,846 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:38:01,846 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:01,874 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:01,874 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:38:01,875 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:01,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:01,895 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:01,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:01,898 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,034 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 06:38:02,034 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:02,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:02,051 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:02,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:38:02,052 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:02,069 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:02,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:02,070 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,203 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 06:38:02,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:02,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:02,224 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:02,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:02,228 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:02,250 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:02,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:02,253 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,388 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 06:38:02,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:02,407 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 06:38:02,407 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:314 [2021-06-05 06:38:02,613 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 06:38:02,711 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 06:38:02,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357769849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:02,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:02,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-05 06:38:02,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899904407] [2021-06-05 06:38:02,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:02,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:02,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:02,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:02,711 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 06:38:03,404 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-06-05 06:38:03,595 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2021-06-05 06:38:03,898 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-06-05 06:38:04,280 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 06:38:04,506 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-06-05 06:38:04,780 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 06:38:05,098 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2021-06-05 06:38:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:05,170 INFO L93 Difference]: Finished difference Result 2284 states and 7582 transitions. [2021-06-05 06:38:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:38:05,170 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 06:38:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:05,173 INFO L225 Difference]: With dead ends: 2284 [2021-06-05 06:38:05,173 INFO L226 Difference]: Without dead ends: 2269 [2021-06-05 06:38:05,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2525.7ms TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:38:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-06-05 06:38:05,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1867. [2021-06-05 06:38:05,197 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 06:38:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 6353 transitions. [2021-06-05 06:38:05,200 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 6353 transitions. Word has length 26 [2021-06-05 06:38:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:05,200 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 6353 transitions. [2021-06-05 06:38:05,200 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 06:38:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 6353 transitions. [2021-06-05 06:38:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:05,202 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:05,202 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:05,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2424,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:05,418 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1269968860, now seen corresponding path program 36 times [2021-06-05 06:38:05,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:05,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702139580] [2021-06-05 06:38:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:05,722 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 06:38:05,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:05,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702139580] [2021-06-05 06:38:05,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702139580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:05,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077061975] [2021-06-05 06:38:05,723 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 06:38:05,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:05,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:05,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:38:05,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:05,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:05,949 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:05,949 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 28 treesize of output 16 [2021-06-05 06:38:05,950 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:05,957 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:05,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:05,958 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:05,968 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:05,968 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 21 treesize of output 17 [2021-06-05 06:38:05,970 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:05,977 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:05,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:05,978 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:05,988 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:05,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:05,989 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,000 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:06,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:38:06,001 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,010 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:06,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:06,011 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,021 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:38:06,022 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:06,035 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,043 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:06,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:38:06,044 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,052 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:06,052 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 36 treesize of output 22 [2021-06-05 06:38:06,052 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,064 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:06,066 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,076 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:06,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:06,077 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:38:06,090 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,098 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:06,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:38:06,098 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:06,103 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:06,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:06,104 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,172 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,174 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:38:06,174 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:38:06,357 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 06:38:06,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077061975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:06,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:06,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:38:06,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955262927] [2021-06-05 06:38:06,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:06,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:06,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:06,357 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 06:38:06,868 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-06-05 06:38:07,218 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2021-06-05 06:38:07,383 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-06-05 06:38:07,530 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 06:38:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:07,712 INFO L93 Difference]: Finished difference Result 2064 states and 6910 transitions. [2021-06-05 06:38:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:38:07,712 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 06:38:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:07,714 INFO L225 Difference]: With dead ends: 2064 [2021-06-05 06:38:07,714 INFO L226 Difference]: Without dead ends: 2049 [2021-06-05 06:38:07,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1529.7ms TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:38:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-06-05 06:38:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1860. [2021-06-05 06:38:07,738 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 06:38:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 6325 transitions. [2021-06-05 06:38:07,741 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 6325 transitions. Word has length 26 [2021-06-05 06:38:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:07,741 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 6325 transitions. [2021-06-05 06:38:07,741 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 06:38:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 6325 transitions. [2021-06-05 06:38:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:07,743 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:07,743 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:07,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2491,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:07,944 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:07,944 INFO L82 PathProgramCache]: Analyzing trace with hash 663462910, now seen corresponding path program 37 times [2021-06-05 06:38:07,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:07,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122236631] [2021-06-05 06:38:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:08,266 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 06:38:08,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:08,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122236631] [2021-06-05 06:38:08,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122236631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:08,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177119170] [2021-06-05 06:38:08,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:38:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:08,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:38:08,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:08,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:08,589 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:08,595 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:08,601 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:38:08,606 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:08,612 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:08,617 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:08,623 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:08,628 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,633 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:08,634 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:38:08,639 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:08,644 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:08,650 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:38:08,655 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,659 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 28 treesize of output 16 [2021-06-05 06:38:08,660 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:08,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:08,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:08,663 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:08,736 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:38:08,738 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 06:38:08,738 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:38:08,797 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 06:38:08,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177119170] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:08,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:08,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:38:08,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226157501] [2021-06-05 06:38:08,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:38:08,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:08,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:38:08,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:08,798 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 06:38:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:09,465 INFO L93 Difference]: Finished difference Result 2341 states and 7786 transitions. [2021-06-05 06:38:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:38:09,465 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 06:38:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:09,468 INFO L225 Difference]: With dead ends: 2341 [2021-06-05 06:38:09,468 INFO L226 Difference]: Without dead ends: 2320 [2021-06-05 06:38:09,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 869.8ms TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-06-05 06:38:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1860. [2021-06-05 06:38:09,485 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 06:38:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 6325 transitions. [2021-06-05 06:38:09,488 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 6325 transitions. Word has length 26 [2021-06-05 06:38:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:09,488 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 6325 transitions. [2021-06-05 06:38:09,488 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 06:38:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 6325 transitions. [2021-06-05 06:38:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:09,490 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:09,490 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:09,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2508 [2021-06-05 06:38:09,690 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:09,691 INFO L82 PathProgramCache]: Analyzing trace with hash -716780640, now seen corresponding path program 38 times [2021-06-05 06:38:09,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:09,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138802577] [2021-06-05 06:38:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:09,990 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 06:38:09,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:09,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138802577] [2021-06-05 06:38:09,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138802577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496165488] [2021-06-05 06:38:09,990 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 06:38:10,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:10,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:10,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:10,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:10,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,295 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,296 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,305 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:38:10,306 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,315 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,316 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,325 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,326 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,335 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,336 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,345 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,345 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:10,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:38:10,360 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:10,371 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 26 treesize of output 24 [2021-06-05 06:38:10,373 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,383 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:10,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:10,384 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,392 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:38:10,392 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,403 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:10,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,405 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,415 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:10,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,418 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,428 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:10,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:10,429 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,440 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:10,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:10,441 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,451 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:10,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:10,452 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:10,457 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:10,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:10,458 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:10,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:10,542 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 06:38:10,542 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 06:38:10,717 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 06:38:10,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496165488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:10,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:38:10,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361726054] [2021-06-05 06:38:10,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:10,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:10,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:10,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:10,718 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 06:38:11,909 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-06-05 06:38:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:11,968 INFO L93 Difference]: Finished difference Result 2236 states and 7452 transitions. [2021-06-05 06:38:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:38:11,968 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 06:38:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:11,971 INFO L225 Difference]: With dead ends: 2236 [2021-06-05 06:38:11,971 INFO L226 Difference]: Without dead ends: 2207 [2021-06-05 06:38:11,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1384.1ms TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:38:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-06-05 06:38:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1840. [2021-06-05 06:38:11,988 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 06:38:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 6244 transitions. [2021-06-05 06:38:11,991 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 6244 transitions. Word has length 26 [2021-06-05 06:38:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:11,991 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 6244 transitions. [2021-06-05 06:38:11,991 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 06:38:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 6244 transitions. [2021-06-05 06:38:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:11,993 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:11,993 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:12,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2542 [2021-06-05 06:38:12,194 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:12,194 INFO L82 PathProgramCache]: Analyzing trace with hash 794427266, now seen corresponding path program 39 times [2021-06-05 06:38:12,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:12,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123792793] [2021-06-05 06:38:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:12,462 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 06:38:12,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:12,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123792793] [2021-06-05 06:38:12,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123792793] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:12,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144613620] [2021-06-05 06:38:12,463 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 06:38:12,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:12,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:12,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:38:12,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:12,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:12,884 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:12,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:12,888 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:12,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:12,911 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:12,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:12,912 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:13,060 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 06:38:13,060 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:13,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:13,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:13,079 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 [2021-06-05 06:38:13,082 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:13,100 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:13,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:13,101 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:13,381 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-06-05 06:38:13,382 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.1 percent of original size [2021-06-05 06:38:13,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:13,399 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:13,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:13,403 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:13,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:13,419 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:13,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:13,420 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:13,558 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 06:38:13,559 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:13,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:13,574 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:13,574 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 28 treesize of output 32 [2021-06-05 06:38:13,580 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:13,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:13,594 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:13,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:13,595 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:13,825 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-06-05 06:38:13,825 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.5 percent of original size [2021-06-05 06:38:13,840 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 06:38:13,840 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:259 [2021-06-05 06:38:14,018 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 06:38:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:14,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144613620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:14,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:14,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:38:14,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335536819] [2021-06-05 06:38:14,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:14,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:14,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:14,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:14,107 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 06:38:14,733 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-06-05 06:38:14,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:14,930 INFO L93 Difference]: Finished difference Result 2047 states and 6843 transitions. [2021-06-05 06:38:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:38:14,931 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 06:38:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:14,933 INFO L225 Difference]: With dead ends: 2047 [2021-06-05 06:38:14,933 INFO L226 Difference]: Without dead ends: 2022 [2021-06-05 06:38:14,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1197.8ms TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2021-06-05 06:38:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1822. [2021-06-05 06:38:14,949 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 06:38:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6190 transitions. [2021-06-05 06:38:14,952 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6190 transitions. Word has length 26 [2021-06-05 06:38:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:14,952 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6190 transitions. [2021-06-05 06:38:14,952 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 06:38:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6190 transitions. [2021-06-05 06:38:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:14,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:14,954 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:15,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2581,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:15,155 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:15,155 INFO L82 PathProgramCache]: Analyzing trace with hash 827344434, now seen corresponding path program 40 times [2021-06-05 06:38:15,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:15,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598062781] [2021-06-05 06:38:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:15,499 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 06:38:15,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:15,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598062781] [2021-06-05 06:38:15,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598062781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:15,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990555068] [2021-06-05 06:38:15,499 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 06:38:15,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:15,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:15,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:15,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:15,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,743 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,744 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,757 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:15,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2021-06-05 06:38:15,759 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,773 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:15,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,774 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,785 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,785 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,796 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,796 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 06:38:15,796 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:15,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-06-05 06:38:15,811 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,821 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,821 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 06:38:15,821 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,834 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:15,834 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 06:38:15,838 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,849 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,850 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,863 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:15,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2021-06-05 06:38:15,866 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,888 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,889 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,900 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 06:38:15,901 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,913 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:15,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,915 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,925 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:15,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,926 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,938 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:15,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:15,939 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:15,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:15,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:15,948 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:15,948 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 06:38:15,949 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:16,017 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:16,019 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:38:16,019 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 06:38:16,198 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 06:38:16,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990555068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:16,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:16,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:38:16,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553421749] [2021-06-05 06:38:16,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:16,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:16,199 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 06:38:16,790 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2021-06-05 06:38:17,350 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 06:38:17,493 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 06:38:17,747 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:38:18,040 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-06-05 06:38:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:18,111 INFO L93 Difference]: Finished difference Result 2419 states and 8019 transitions. [2021-06-05 06:38:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:38:18,112 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 06:38:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:18,115 INFO L225 Difference]: With dead ends: 2419 [2021-06-05 06:38:18,115 INFO L226 Difference]: Without dead ends: 2400 [2021-06-05 06:38:18,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2045.3ms TimeCoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:38:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2021-06-05 06:38:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 1803. [2021-06-05 06:38:18,133 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 06:38:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 6125 transitions. [2021-06-05 06:38:18,136 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 6125 transitions. Word has length 26 [2021-06-05 06:38:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:18,136 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 6125 transitions. [2021-06-05 06:38:18,137 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 06:38:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 6125 transitions. [2021-06-05 06:38:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:18,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:18,139 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:18,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2637,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:18,339 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:18,339 INFO L82 PathProgramCache]: Analyzing trace with hash 305289786, now seen corresponding path program 41 times [2021-06-05 06:38:18,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:18,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796037155] [2021-06-05 06:38:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:18,656 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 06:38:18,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:18,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796037155] [2021-06-05 06:38:18,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796037155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:18,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326846232] [2021-06-05 06:38:18,657 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 06:38:18,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:18,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:18,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:38:18,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:19,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,042 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 21 treesize of output 13 [2021-06-05 06:38:19,042 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,048 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:19,053 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,059 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:38:19,064 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:19,069 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,075 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,080 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,085 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 21 treesize of output 13 [2021-06-05 06:38:19,086 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,092 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,098 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,102 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 28 treesize of output 16 [2021-06-05 06:38:19,103 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,109 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,114 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:19,115 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:19,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:19,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:19,118 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:19,199 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:38:19,200 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 06:38:19,200 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:38:19,256 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 06:38:19,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326846232] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:19,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:19,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:38:19,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286160879] [2021-06-05 06:38:19,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:38:19,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:19,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:38:19,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:38:19,256 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 06:38:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:20,076 INFO L93 Difference]: Finished difference Result 2310 states and 7688 transitions. [2021-06-05 06:38:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:38:20,077 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 06:38:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:20,079 INFO L225 Difference]: With dead ends: 2310 [2021-06-05 06:38:20,079 INFO L226 Difference]: Without dead ends: 2295 [2021-06-05 06:38:20,079 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1053.4ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:38:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2021-06-05 06:38:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1848. [2021-06-05 06:38:20,096 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 06:38:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 6269 transitions. [2021-06-05 06:38:20,099 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 6269 transitions. Word has length 26 [2021-06-05 06:38:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:20,099 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 6269 transitions. [2021-06-05 06:38:20,099 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 06:38:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 6269 transitions. [2021-06-05 06:38:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:20,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:20,101 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:20,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2662 [2021-06-05 06:38:20,302 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash 137480694, now seen corresponding path program 42 times [2021-06-05 06:38:20,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:20,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160142785] [2021-06-05 06:38:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:20,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:20,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160142785] [2021-06-05 06:38:20,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160142785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:20,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233611968] [2021-06-05 06:38:20,561 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 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 06:38:20,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:38:20,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:20,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:38:20,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:20,852 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:20,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:20,853 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,870 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:20,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:20,871 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,887 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:20,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:38:20,889 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,898 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:20,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:38:20,898 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,907 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:20,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:20,908 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,917 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:20,917 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 36 treesize of output 22 [2021-06-05 06:38:20,917 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,931 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:20,931 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:38:20,936 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,951 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:20,951 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 33 treesize of output 35 [2021-06-05 06:38:20,952 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,971 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:20,971 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:38:20,974 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:20,992 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:20,993 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 26 treesize of output 28 [2021-06-05 06:38:20,994 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:21,002 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:21,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:21,003 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:21,022 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:21,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:21,026 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:21,034 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:21,034 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:38:21,035 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:21,043 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:21,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:21,044 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:21,053 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:21,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:21,054 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:21,065 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:21,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:21,067 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:21,176 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-06-05 06:38:21,177 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:21,188 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 06:38:21,188 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:769, output treesize:357 [2021-06-05 06:38:21,402 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-06-05 06:38:21,605 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 06:38:21,717 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 06:38:21,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233611968] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:21,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:38:21,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260559924] [2021-06-05 06:38:21,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:21,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:21,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:21,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:21,718 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 06:38:22,156 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2021-06-05 06:38:22,844 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 06:38:22,991 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2021-06-05 06:38:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:23,057 INFO L93 Difference]: Finished difference Result 2570 states and 8519 transitions. [2021-06-05 06:38:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:38:23,057 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 06:38:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:23,061 INFO L225 Difference]: With dead ends: 2570 [2021-06-05 06:38:23,061 INFO L226 Difference]: Without dead ends: 2555 [2021-06-05 06:38:23,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1842.7ms TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:38:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-06-05 06:38:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1848. [2021-06-05 06:38:23,090 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 06:38:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 6269 transitions. [2021-06-05 06:38:23,092 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 6269 transitions. Word has length 26 [2021-06-05 06:38:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:23,093 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 6269 transitions. [2021-06-05 06:38:23,093 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 06:38:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 6269 transitions. [2021-06-05 06:38:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:23,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:23,095 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:23,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2690 [2021-06-05 06:38:23,295 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash 436254142, now seen corresponding path program 43 times [2021-06-05 06:38:23,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:23,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301457013] [2021-06-05 06:38:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:23,524 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 06:38:23,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:23,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301457013] [2021-06-05 06:38:23,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301457013] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532853453] [2021-06-05 06:38:23,524 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 06:38:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:23,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:38:23,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:23,843 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_327, v_prenex_329], 3=[A, v_prenex_331]} [2021-06-05 06:38:23,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:23,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:23,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:23,850 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 28 treesize of output 16 [2021-06-05 06:38:23,851 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:23,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:23,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:23,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:23,857 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:23,997 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-06-05 06:38:23,998 INFO L628 ElimStorePlain]: treesize reduction 129, result has 54.9 percent of original size [2021-06-05 06:38:24,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:24,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:24,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:24,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:24,005 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:24,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:24,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:24,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:24,010 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:24,053 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:24,056 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 06:38:24,058 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:24,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:24,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:24,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:24,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:24,101 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:24,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:24,140 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 06:38:24,140 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:325, output treesize:51 [2021-06-05 06:38:24,197 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 06:38:24,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532853453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:24,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:24,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:38:24,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014434077] [2021-06-05 06:38:24,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:24,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:24,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:24,198 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 06:38:24,874 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-06-05 06:38:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:25,001 INFO L93 Difference]: Finished difference Result 2415 states and 7997 transitions. [2021-06-05 06:38:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:38:25,002 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 06:38:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:25,005 INFO L225 Difference]: With dead ends: 2415 [2021-06-05 06:38:25,005 INFO L226 Difference]: Without dead ends: 2385 [2021-06-05 06:38:25,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 956.2ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:38:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-06-05 06:38:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1850. [2021-06-05 06:38:25,023 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 06:38:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 6279 transitions. [2021-06-05 06:38:25,026 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 6279 transitions. Word has length 26 [2021-06-05 06:38:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:25,026 INFO L482 AbstractCegarLoop]: Abstraction has 1850 states and 6279 transitions. [2021-06-05 06:38:25,026 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 06:38:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 6279 transitions. [2021-06-05 06:38:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:25,028 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:25,028 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:25,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2741 [2021-06-05 06:38:25,228 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1514157122, now seen corresponding path program 44 times [2021-06-05 06:38:25,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:25,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728769227] [2021-06-05 06:38:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:25,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:25,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728769227] [2021-06-05 06:38:25,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728769227] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:25,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456661339] [2021-06-05 06:38:25,546 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 06:38:25,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:25,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:25,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:38:25,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:25,756 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 06:38:26,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,081 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:26,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:26,084 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,104 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:26,104 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 26 treesize of output 28 [2021-06-05 06:38:26,106 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:26,259 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:38:26,259 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:26,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,277 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:26,277 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:38:26,281 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:26,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,298 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:26,298 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:38:26,300 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:26,442 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:38:26,443 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:26,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:38:26,464 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:26,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,483 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:26,483 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 33 treesize of output 31 [2021-06-05 06:38:26,484 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:26,768 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-06-05 06:38:26,769 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.0 percent of original size [2021-06-05 06:38:26,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:26,785 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 28 treesize of output 32 [2021-06-05 06:38:26,790 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:26,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:26,805 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:26,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:26,806 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:27,042 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-05 06:38:27,043 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.7 percent of original size [2021-06-05 06:38:27,058 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 06:38:27,058 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:365, output treesize:256 [2021-06-05 06:38:27,247 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 06:38:27,338 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 06:38:27,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456661339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:27,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:27,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-06-05 06:38:27,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925188227] [2021-06-05 06:38:27,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:38:27,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:27,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:38:27,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:38:27,339 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 06:38:27,780 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-06-05 06:38:28,259 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-05 06:38:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:28,283 INFO L93 Difference]: Finished difference Result 2425 states and 8078 transitions. [2021-06-05 06:38:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:38:28,283 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 06:38:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:28,286 INFO L225 Difference]: With dead ends: 2425 [2021-06-05 06:38:28,286 INFO L226 Difference]: Without dead ends: 2410 [2021-06-05 06:38:28,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1519.4ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:38:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-06-05 06:38:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1868. [2021-06-05 06:38:28,305 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 06:38:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 6333 transitions. [2021-06-05 06:38:28,308 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 6333 transitions. Word has length 26 [2021-06-05 06:38:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:28,308 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 6333 transitions. [2021-06-05 06:38:28,308 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 06:38:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 6333 transitions. [2021-06-05 06:38:28,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:28,310 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:28,310 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:28,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2752,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:28,510 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash -714815838, now seen corresponding path program 45 times [2021-06-05 06:38:28,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:28,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954724086] [2021-06-05 06:38:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:28,837 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 06:38:28,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:28,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954724086] [2021-06-05 06:38:28,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954724086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143558552] [2021-06-05 06:38:28,838 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 06:38:28,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:28,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:28,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:28,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:29,272 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 06:38:29,509 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2021-06-05 06:38:29,582 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_349, v_prenex_347], 2=[A, v_prenex_348]} [2021-06-05 06:38:29,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:29,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:29,588 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:29,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:29,592 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 06:38:29,593 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:29,724 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-06-05 06:38:29,724 INFO L628 ElimStorePlain]: treesize reduction 114, result has 55.3 percent of original size [2021-06-05 06:38:29,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:29,728 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 06:38:29,729 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:29,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:29,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:29,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:29,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:29,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:29,782 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:29,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:29,786 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:29,787 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:29,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:29,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:29,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:29,830 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:29,865 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:29,868 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 06:38:29,868 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:285, output treesize:51 [2021-06-05 06:38:29,920 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 06:38:29,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143558552] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:29,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:29,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:38:29,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001468935] [2021-06-05 06:38:29,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:38:29,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:29,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:38:29,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:29,921 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 06:38:30,685 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:38:30,915 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2021-06-05 06:38:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:31,012 INFO L93 Difference]: Finished difference Result 2321 states and 7745 transitions. [2021-06-05 06:38:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:38:31,012 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 06:38:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:31,015 INFO L225 Difference]: With dead ends: 2321 [2021-06-05 06:38:31,015 INFO L226 Difference]: Without dead ends: 2306 [2021-06-05 06:38:31,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1680.3ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:38:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-06-05 06:38:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1889. [2021-06-05 06:38:31,032 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 06:38:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 6398 transitions. [2021-06-05 06:38:31,035 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 6398 transitions. Word has length 26 [2021-06-05 06:38:31,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:31,035 INFO L482 AbstractCegarLoop]: Abstraction has 1889 states and 6398 transitions. [2021-06-05 06:38:31,035 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 06:38:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 6398 transitions. [2021-06-05 06:38:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:31,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:31,037 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:31,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2810 [2021-06-05 06:38:31,238 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:31,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:31,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1962618678, now seen corresponding path program 46 times [2021-06-05 06:38:31,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:31,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275617450] [2021-06-05 06:38:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:31,505 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 06:38:31,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:31,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275617450] [2021-06-05 06:38:31,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275617450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:31,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124194133] [2021-06-05 06:38:31,506 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 06:38:31,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:31,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:31,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:31,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:31,907 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 06:38:31,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:31,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:31,965 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 24 [2021-06-05 06:38:31,968 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,076 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:38:32,076 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,088 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,088 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 26 treesize of output 24 [2021-06-05 06:38:32,089 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,193 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 06:38:32,194 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,206 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:32,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:32,207 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,309 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 06:38:32,310 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:32,322 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,431 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:38:32,431 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,443 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:32,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:32,444 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,546 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:38:32,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,557 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:32,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:32,558 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,652 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,663 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:32,665 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,767 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:32,770 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,860 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 06:38:32,860 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 06:38:33,044 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 06:38:33,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124194133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:33,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:33,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:38:33,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298060883] [2021-06-05 06:38:33,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:38:33,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:33,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:38:33,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:33,045 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 06:38:33,730 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 06:38:34,072 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-06-05 06:38:34,377 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 06:38:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:34,550 INFO L93 Difference]: Finished difference Result 2617 states and 8667 transitions. [2021-06-05 06:38:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:38:34,550 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 06:38:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:34,554 INFO L225 Difference]: With dead ends: 2617 [2021-06-05 06:38:34,554 INFO L226 Difference]: Without dead ends: 2602 [2021-06-05 06:38:34,554 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1871.2ms TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:38:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-06-05 06:38:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1886. [2021-06-05 06:38:34,574 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 06:38:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6390 transitions. [2021-06-05 06:38:34,577 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6390 transitions. Word has length 26 [2021-06-05 06:38:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:34,577 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6390 transitions. [2021-06-05 06:38:34,577 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 06:38:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6390 transitions. [2021-06-05 06:38:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:34,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:34,579 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:34,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2825,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:34,781 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:34,781 INFO L82 PathProgramCache]: Analyzing trace with hash 272675774, now seen corresponding path program 47 times [2021-06-05 06:38:34,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:34,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690090572] [2021-06-05 06:38:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:35,036 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 06:38:35,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:35,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690090572] [2021-06-05 06:38:35,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690090572] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:35,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123390711] [2021-06-05 06:38:35,036 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 06:38:35,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:35,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:35,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:38:35,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:35,429 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 06:38:35,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,549 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:38:35,552 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:35,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,562 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:35,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:35,563 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:35,686 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:38:35,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,699 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 26 treesize of output 24 [2021-06-05 06:38:35,700 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,710 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:35,710 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 21 treesize of output 17 [2021-06-05 06:38:35,711 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:35,826 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:38:35,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,838 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:35,842 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:35,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,851 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:35,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:35,852 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:35,951 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,963 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:35,964 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:35,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:35,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:35,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:38:35,974 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,068 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:36,074 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 06:38:36,074 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:325, output treesize:174 [2021-06-05 06:38:36,250 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 06:38:36,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123390711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:36,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:36,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:38:36,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078455877] [2021-06-05 06:38:36,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:36,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:36,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:36,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:36,251 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 06:38:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:37,206 INFO L93 Difference]: Finished difference Result 2461 states and 8175 transitions. [2021-06-05 06:38:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:38:37,206 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 06:38:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:37,209 INFO L225 Difference]: With dead ends: 2461 [2021-06-05 06:38:37,209 INFO L226 Difference]: Without dead ends: 2436 [2021-06-05 06:38:37,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1252.9ms TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:38:37,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-06-05 06:38:37,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 1886. [2021-06-05 06:38:37,227 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 06:38:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6394 transitions. [2021-06-05 06:38:37,230 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6394 transitions. Word has length 26 [2021-06-05 06:38:37,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:37,231 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6394 transitions. [2021-06-05 06:38:37,231 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 06:38:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6394 transitions. [2021-06-05 06:38:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:37,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:37,233 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:37,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2842 [2021-06-05 06:38:37,434 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:37,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1537750790, now seen corresponding path program 48 times [2021-06-05 06:38:37,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:37,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001903634] [2021-06-05 06:38:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:37,776 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 06:38:37,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:37,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001903634] [2021-06-05 06:38:37,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001903634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:37,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924301800] [2021-06-05 06:38:37,777 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 06:38:37,801 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:37,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:37,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:38:37,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:37,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,985 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:37,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:37,986 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,994 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:37,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:37,995 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,005 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:38,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:38,007 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,015 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:38,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:38,015 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,025 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:38,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:38:38,026 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,037 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:38,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:38,038 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,046 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:38,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:38,047 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:38,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:38,058 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:38,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:38,082 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,090 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:38,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:38,091 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,099 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:38,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:38,099 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,109 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:38,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:38,111 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,122 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:38,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:38,123 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,132 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:38,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:38:38,135 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,143 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:38,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:38,144 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:38,149 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:38,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:38,149 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:38,218 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:38,219 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:38:38,220 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:38:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:38,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924301800] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:38,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:38,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:38:38,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564930448] [2021-06-05 06:38:38,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:38,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:38,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:38,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:38,412 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 06:38:39,095 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-06-05 06:38:39,272 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-06-05 06:38:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:39,337 INFO L93 Difference]: Finished difference Result 2412 states and 8043 transitions. [2021-06-05 06:38:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:38:39,338 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 06:38:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:39,340 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 06:38:39,340 INFO L226 Difference]: Without dead ends: 2397 [2021-06-05 06:38:39,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1233.3ms TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:38:39,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-06-05 06:38:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1886. [2021-06-05 06:38:39,359 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 06:38:39,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 6394 transitions. [2021-06-05 06:38:39,362 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 6394 transitions. Word has length 26 [2021-06-05 06:38:39,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:39,362 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 6394 transitions. [2021-06-05 06:38:39,362 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 06:38:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 6394 transitions. [2021-06-05 06:38:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:39,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:39,364 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:39,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2875,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:39,565 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:39,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1872442310, now seen corresponding path program 55 times [2021-06-05 06:38:39,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:39,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622594198] [2021-06-05 06:38:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:39,880 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 06:38:39,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:39,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622594198] [2021-06-05 06:38:39,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622594198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:39,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951308522] [2021-06-05 06:38:39,881 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 06:38:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:39,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:39,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:40,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:38:40,307 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:40,314 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,321 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 34 treesize of output 16 [2021-06-05 06:38:40,321 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,328 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 35 treesize of output 19 [2021-06-05 06:38:40,328 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:40,335 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:40,342 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:40,349 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:40,356 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:40,363 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:40,370 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:40,377 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:40,384 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:38:40,391 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:40,397 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:40,401 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,425 INFO L628 ElimStorePlain]: treesize reduction 32, result has 45.8 percent of original size [2021-06-05 06:38:40,426 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 06:38:40,426 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:38:40,453 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 06:38:40,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951308522] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:40,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:40,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:38:40,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392745827] [2021-06-05 06:38:40,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:38:40,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:40,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:38:40,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:40,453 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 06:38:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:41,140 INFO L93 Difference]: Finished difference Result 2181 states and 7107 transitions. [2021-06-05 06:38:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:38:41,141 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 06:38:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:41,144 INFO L225 Difference]: With dead ends: 2181 [2021-06-05 06:38:41,144 INFO L226 Difference]: Without dead ends: 2144 [2021-06-05 06:38:41,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 858.5ms TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:38:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-06-05 06:38:41,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1906. [2021-06-05 06:38:41,162 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 06:38:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 6460 transitions. [2021-06-05 06:38:41,165 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 6460 transitions. Word has length 26 [2021-06-05 06:38:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:41,165 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 6460 transitions. [2021-06-05 06:38:41,165 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 06:38:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 6460 transitions. [2021-06-05 06:38:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:41,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:41,168 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:41,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2892 [2021-06-05 06:38:41,368 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:41,368 INFO L82 PathProgramCache]: Analyzing trace with hash -804567746, now seen corresponding path program 56 times [2021-06-05 06:38:41,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:41,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334521239] [2021-06-05 06:38:41,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:41,687 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 06:38:41,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:41,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334521239] [2021-06-05 06:38:41,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334521239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:41,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397548984] [2021-06-05 06:38:41,687 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 06:38:41,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:41,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:41,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:41,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:41,985 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_376, v_prenex_378], 6=[A, v_prenex_374]} [2021-06-05 06:38:41,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,993 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2021-06-05 06:38:41,994 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,999 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 06:38:42,000 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:42,099 INFO L628 ElimStorePlain]: treesize reduction 156, result has 44.9 percent of original size [2021-06-05 06:38:42,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:42,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:42,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:42,104 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:42,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:42,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:42,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:42,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:42,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:38:42,143 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:42,173 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:42,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:42,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:42,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:42,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:42,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:42,178 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:42,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:42,206 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 06:38:42,206 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:341, output treesize:41 [2021-06-05 06:38:42,249 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 06:38:42,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397548984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:42,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:42,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:38:42,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486082189] [2021-06-05 06:38:42,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:38:42,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:42,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:38:42,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:42,250 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 06:38:43,235 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 06:38:43,366 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-05 06:38:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:43,472 INFO L93 Difference]: Finished difference Result 2358 states and 7788 transitions. [2021-06-05 06:38:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:38:43,472 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 06:38:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:43,475 INFO L225 Difference]: With dead ends: 2358 [2021-06-05 06:38:43,475 INFO L226 Difference]: Without dead ends: 2312 [2021-06-05 06:38:43,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1407.8ms TimeCoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:38:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-06-05 06:38:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1906. [2021-06-05 06:38:43,493 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 06:38:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 6450 transitions. [2021-06-05 06:38:43,496 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 6450 transitions. Word has length 26 [2021-06-05 06:38:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:43,496 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 6450 transitions. [2021-06-05 06:38:43,496 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 06:38:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 6450 transitions. [2021-06-05 06:38:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:43,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:43,498 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:43,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2988 [2021-06-05 06:38:43,699 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:43,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:43,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1833133118, now seen corresponding path program 57 times [2021-06-05 06:38:43,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:43,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690217162] [2021-06-05 06:38:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:44,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:44,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690217162] [2021-06-05 06:38:44,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690217162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:44,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317242527] [2021-06-05 06:38:44,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:44,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:44,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:44,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:38:44,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:44,454 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:38:44,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,729 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:38:44,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,731 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,768 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:38:44,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,770 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,128 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-06-05 06:38:45,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:45,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,165 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:38:45,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:45,168 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,192 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:38:45,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:45,193 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,527 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 06:38:45,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:45,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,560 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:38:45,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:45,563 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,598 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 06:38:45,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:38:45,601 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,913 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:38:45,913 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:45,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,941 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:38:45,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:45,943 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:45,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:45,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:45,970 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:46,276 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:38:46,276 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:46,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,310 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:38:46,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:46,312 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:46,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,335 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:46,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:46,340 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:46,868 WARN L205 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-06-05 06:38:46,868 INFO L628 ElimStorePlain]: treesize reduction 33, result has 94.4 percent of original size [2021-06-05 06:38:46,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,897 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:38:46,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:38:46,901 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:46,916 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:38:46,916 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 30 treesize of output 1 [2021-06-05 06:38:46,917 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:47,149 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:38:47,150 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:47,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,180 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:38:47,180 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 37 treesize of output 35 [2021-06-05 06:38:47,183 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:47,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,202 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:38:47,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:47,204 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:47,413 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:38:47,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:47,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,443 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:38:47,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:47,447 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:47,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:47,458 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:38:47,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:47,459 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:47,639 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 06:38:47,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:47,650 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 06:38:47,650 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:801, output treesize:340 [2021-06-05 06:38:47,803 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 06:38:47,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317242527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:47,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:47,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:38:47,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710682104] [2021-06-05 06:38:47,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:38:47,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:47,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:38:47,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:38:47,804 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) [2021-06-05 06:38:48,804 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 06:38:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:49,102 INFO L93 Difference]: Finished difference Result 2168 states and 7234 transitions. [2021-06-05 06:38:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:38:49,103 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 06:38:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:49,105 INFO L225 Difference]: With dead ends: 2168 [2021-06-05 06:38:49,105 INFO L226 Difference]: Without dead ends: 2153 [2021-06-05 06:38:49,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1542.4ms TimeCoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:38:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-06-05 06:38:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1921. [2021-06-05 06:38:49,122 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) [2021-06-05 06:38:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 6513 transitions. [2021-06-05 06:38:49,125 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 6513 transitions. Word has length 26 [2021-06-05 06:38:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:49,125 INFO L482 AbstractCegarLoop]: Abstraction has 1921 states and 6513 transitions. [2021-06-05 06:38:49,126 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 06:38:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 6513 transitions. [2021-06-05 06:38:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:49,128 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:49,128 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:49,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3002,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:49,328 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:49,328 INFO L82 PathProgramCache]: Analyzing trace with hash 179857598, now seen corresponding path program 49 times [2021-06-05 06:38:49,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:49,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10970320] [2021-06-05 06:38:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:49,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:49,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10970320] [2021-06-05 06:38:49,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10970320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:49,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659507468] [2021-06-05 06:38:49,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:49,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:38:49,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:50,017 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 06:38:50,190 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 06:38:50,547 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-06-05 06:38:50,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:50,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:50,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:50,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:50,597 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:50,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:50,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:50,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:50,602 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:50,723 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-06-05 06:38:50,723 INFO L628 ElimStorePlain]: treesize reduction 44, result has 75.1 percent of original size [2021-06-05 06:38:50,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:50,727 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 06:38:50,728 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:50,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:50,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:50,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:50,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:50,785 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:50,786 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:50,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:50,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:50,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:38:50,790 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:50,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:50,835 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:38:50,835 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 9 variables, input treesize:215, output treesize:51 [2021-06-05 06:38:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:50,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659507468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:50,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:50,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:50,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713630625] [2021-06-05 06:38:50,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:50,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:50,889 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) [2021-06-05 06:38:52,124 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-06-05 06:38:52,547 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2021-06-05 06:38:53,040 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 87 [2021-06-05 06:38:53,511 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 92 [2021-06-05 06:38:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:53,723 INFO L93 Difference]: Finished difference Result 2468 states and 8139 transitions. [2021-06-05 06:38:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:38:53,723 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 06:38:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:53,726 INFO L225 Difference]: With dead ends: 2468 [2021-06-05 06:38:53,726 INFO L226 Difference]: Without dead ends: 2453 [2021-06-05 06:38:53,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3337.9ms TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:38:53,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2021-06-05 06:38:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 1932. [2021-06-05 06:38:53,745 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) [2021-06-05 06:38:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 6551 transitions. [2021-06-05 06:38:53,748 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 6551 transitions. Word has length 26 [2021-06-05 06:38:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:53,748 INFO L482 AbstractCegarLoop]: Abstraction has 1932 states and 6551 transitions. [2021-06-05 06:38:53,748 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 06:38:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 6551 transitions. [2021-06-05 06:38:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:53,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:53,750 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:53,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3067 [2021-06-05 06:38:53,950 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:53,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1730239162, now seen corresponding path program 58 times [2021-06-05 06:38:53,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:53,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59925692] [2021-06-05 06:38:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:54,210 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 06:38:54,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:54,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59925692] [2021-06-05 06:38:54,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59925692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:54,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703569795] [2021-06-05 06:38:54,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:54,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:54,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:54,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:38:54,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:54,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:54,728 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:54,735 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,742 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 33 treesize of output 13 [2021-06-05 06:38:54,743 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:54,750 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,756 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:54,757 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:38:54,764 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,770 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 32 treesize of output 16 [2021-06-05 06:38:54,771 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:54,778 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,784 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 39 treesize of output 13 [2021-06-05 06:38:54,785 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:54,792 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:54,799 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:54,805 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:54,812 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:38:54,818 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:54,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:54,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:54,822 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,847 INFO L628 ElimStorePlain]: treesize reduction 32, result has 45.8 percent of original size [2021-06-05 06:38:54,848 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 06:38:54,848 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:38:54,864 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 06:38:54,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703569795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:54,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:54,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:38:54,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262933292] [2021-06-05 06:38:54,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:38:54,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:54,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:38:54,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:54,865 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) [2021-06-05 06:38:55,438 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-05 06:38:55,668 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-06-05 06:38:55,968 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-06-05 06:38:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:56,244 INFO L93 Difference]: Finished difference Result 2505 states and 8099 transitions. [2021-06-05 06:38:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:38:56,245 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 [2021-06-05 06:38:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:56,248 INFO L225 Difference]: With dead ends: 2505 [2021-06-05 06:38:56,248 INFO L226 Difference]: Without dead ends: 2483 [2021-06-05 06:38:56,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1446.3ms TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:38:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-06-05 06:38:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 1948. [2021-06-05 06:38:56,269 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) [2021-06-05 06:38:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 6611 transitions. [2021-06-05 06:38:56,272 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 6611 transitions. Word has length 26 [2021-06-05 06:38:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:56,272 INFO L482 AbstractCegarLoop]: Abstraction has 1948 states and 6611 transitions. [2021-06-05 06:38:56,272 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) [2021-06-05 06:38:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 6611 transitions. [2021-06-05 06:38:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:56,274 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:56,274 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:56,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3079,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:56,474 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:56,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1769727974, now seen corresponding path program 50 times [2021-06-05 06:38:56,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:56,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042419495] [2021-06-05 06:38:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:56,831 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 06:38:56,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:56,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042419495] [2021-06-05 06:38:56,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042419495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:56,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362746884] [2021-06-05 06:38:56,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:56,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:56,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:56,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:38:56,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:57,342 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:38:57,643 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:38:57,792 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]} [2021-06-05 06:38:57,811 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:57,811 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 35 [2021-06-05 06:38:57,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,187 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 136 [2021-06-05 06:38:58,187 INFO L628 ElimStorePlain]: treesize reduction 307, result has 56.1 percent of original size [2021-06-05 06:38:58,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:58,206 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,351 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-05 06:38:58,351 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,372 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:58,372 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:38:58,374 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,522 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:38:58,522 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:58,540 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:58,544 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,685 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:38:58,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:58,707 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:38:58,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-06-05 06:38:58,710 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,848 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:38:58,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:58,867 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:38:58,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 23 [2021-06-05 06:38:58,869 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,003 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:38:59,003 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:59,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:59,023 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:38:59,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-05 06:38:59,027 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,164 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 06:38:59,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:59,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:59,181 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:38:59,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:59,183 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,307 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:38:59,307 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:59,319 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 06:38:59,319 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:706, output treesize:429 [2021-06-05 06:38:59,548 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-06-05 06:38:59,662 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 06:38:59,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362746884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:59,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:59,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:38:59,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511122678] [2021-06-05 06:38:59,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:59,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:59,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:59,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:59,662 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) [2021-06-05 06:39:00,514 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-06-05 06:39:01,022 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2021-06-05 06:39:01,275 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-06-05 06:39:01,977 WARN L205 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2021-06-05 06:39:02,786 WARN L205 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2021-06-05 06:39:03,588 WARN L205 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 95 [2021-06-05 06:39:04,147 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2021-06-05 06:39:05,047 WARN L205 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2021-06-05 06:39:05,533 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 84 [2021-06-05 06:39:06,186 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 101 [2021-06-05 06:39:06,411 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-05 06:39:06,610 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-06-05 06:39:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:06,847 INFO L93 Difference]: Finished difference Result 2657 states and 8685 transitions. [2021-06-05 06:39:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:39:06,848 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 06:39:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:06,851 INFO L225 Difference]: With dead ends: 2657 [2021-06-05 06:39:06,851 INFO L226 Difference]: Without dead ends: 2642 [2021-06-05 06:39:06,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 7426.8ms TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:39:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-06-05 06:39:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1952. [2021-06-05 06:39:06,871 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) [2021-06-05 06:39:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 6625 transitions. [2021-06-05 06:39:06,874 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 6625 transitions. Word has length 26 [2021-06-05 06:39:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:06,874 INFO L482 AbstractCegarLoop]: Abstraction has 1952 states and 6625 transitions. [2021-06-05 06:39:06,874 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 06:39:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 6625 transitions. [2021-06-05 06:39:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:06,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:06,877 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:07,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3193,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:07,078 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:07,078 INFO L82 PathProgramCache]: Analyzing trace with hash 152195194, now seen corresponding path program 51 times [2021-06-05 06:39:07,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:07,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932536430] [2021-06-05 06:39:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:07,379 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 06:39:07,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:07,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932536430] [2021-06-05 06:39:07,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932536430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:07,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777647751] [2021-06-05 06:39:07,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:07,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:07,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:07,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:07,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:07,707 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:39:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,772 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:07,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:07,775 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,882 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:39:07,882 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:07,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,895 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:07,895 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 20 [2021-06-05 06:39:07,896 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,998 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:39:07,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:08,014 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,111 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,124 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:08,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:08,125 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,231 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:08,233 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,338 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:08,340 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,442 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:08,443 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,542 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:08,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:08,544 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,629 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,634 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 06:39:08,634 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 06:39:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:08,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777647751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:08,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:08,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:08,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175933827] [2021-06-05 06:39:08,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:08,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:08,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:08,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:08,808 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) [2021-06-05 06:39:09,807 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-06-05 06:39:10,086 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-05 06:39:10,213 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-06-05 06:39:10,539 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-06-05 06:39:10,765 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-05 06:39:10,959 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-06-05 06:39:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:11,243 INFO L93 Difference]: Finished difference Result 2972 states and 9683 transitions. [2021-06-05 06:39:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:39:11,243 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 06:39:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:11,247 INFO L225 Difference]: With dead ends: 2972 [2021-06-05 06:39:11,247 INFO L226 Difference]: Without dead ends: 2942 [2021-06-05 06:39:11,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2641.4ms TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:39:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-06-05 06:39:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1949. [2021-06-05 06:39:11,269 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) [2021-06-05 06:39:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 6620 transitions. [2021-06-05 06:39:11,272 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 6620 transitions. Word has length 26 [2021-06-05 06:39:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:11,272 INFO L482 AbstractCegarLoop]: Abstraction has 1949 states and 6620 transitions. [2021-06-05 06:39:11,272 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 06:39:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 6620 transitions. [2021-06-05 06:39:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:11,274 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:11,274 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:11,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3230 [2021-06-05 06:39:11,476 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1956232686, now seen corresponding path program 59 times [2021-06-05 06:39:11,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:11,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237535638] [2021-06-05 06:39:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:11,744 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 06:39:11,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:11,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237535638] [2021-06-05 06:39:11,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237535638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:11,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767652620] [2021-06-05 06:39:11,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:11,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:39:11,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:11,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:11,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:39:12,242 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:39:12,250 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:12,258 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:12,266 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:12,274 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:39:12,282 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,289 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 30 treesize of output 16 [2021-06-05 06:39:12,290 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:12,298 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:12,306 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:39:12,313 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:12,321 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:12,328 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:12,335 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:12,342 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:12,347 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,371 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-05 06:39:12,371 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 06:39:12,372 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:39:12,403 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 06:39:12,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767652620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:12,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:12,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:39:12,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583022616] [2021-06-05 06:39:12,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:12,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:12,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:12,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:12,404 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) [2021-06-05 06:39:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:13,602 INFO L93 Difference]: Finished difference Result 3403 states and 10936 transitions. [2021-06-05 06:39:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:39:13,602 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 06:39:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:13,606 INFO L225 Difference]: With dead ends: 3403 [2021-06-05 06:39:13,606 INFO L226 Difference]: Without dead ends: 3373 [2021-06-05 06:39:13,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1279.3ms TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:39:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2021-06-05 06:39:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 2041. [2021-06-05 06:39:13,631 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) [2021-06-05 06:39:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 6951 transitions. [2021-06-05 06:39:13,634 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 6951 transitions. Word has length 26 [2021-06-05 06:39:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:13,634 INFO L482 AbstractCegarLoop]: Abstraction has 2041 states and 6951 transitions. [2021-06-05 06:39:13,634 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 06:39:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 6951 transitions. [2021-06-05 06:39:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:13,637 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:13,637 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:13,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3245,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:13,837 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:13,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:13,837 INFO L82 PathProgramCache]: Analyzing trace with hash -505085958, now seen corresponding path program 60 times [2021-06-05 06:39:13,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:13,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741779707] [2021-06-05 06:39:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:14,075 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 06:39:14,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:14,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741779707] [2021-06-05 06:39:14,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741779707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:14,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792862429] [2021-06-05 06:39:14,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:14,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:39:14,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:14,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:14,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:14,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,644 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-05 06:39:14,644 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 [2021-06-05 06:39:14,647 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,679 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:14,679 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 [2021-06-05 06:39:14,686 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,705 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:14,705 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 [2021-06-05 06:39:14,706 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,738 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-05 06:39:14,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 38 [2021-06-05 06:39:14,742 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,759 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:14,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:39:14,760 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,788 INFO L354 Elim1Store]: treesize reduction 31, result has 24.4 percent of original size [2021-06-05 06:39:14,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:14,789 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,807 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:14,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:39:14,807 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,837 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:14,837 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 [2021-06-05 06:39:14,846 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,879 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-05 06:39:14,880 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 38 [2021-06-05 06:39:14,883 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,901 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:14,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:39:14,902 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,928 INFO L354 Elim1Store]: treesize reduction 31, result has 24.4 percent of original size [2021-06-05 06:39:14,928 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 [2021-06-05 06:39:14,930 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,957 INFO L354 Elim1Store]: treesize reduction 31, result has 24.4 percent of original size [2021-06-05 06:39:14,957 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 [2021-06-05 06:39:14,958 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,976 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:14,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:14,977 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:14,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:14,994 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:14,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:14,995 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,012 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:15,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:39:15,013 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,032 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:39:15,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:39:15,033 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,230 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2021-06-05 06:39:15,230 INFO L628 ElimStorePlain]: treesize reduction 193, result has 41.2 percent of original size [2021-06-05 06:39:15,233 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 06:39:15,233 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:953, output treesize:150 [2021-06-05 06:39:15,415 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 06:39:15,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792862429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:15,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:15,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:39:15,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733683214] [2021-06-05 06:39:15,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:15,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:15,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:15,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:15,416 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) [2021-06-05 06:39:17,073 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-05 06:39:17,359 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 06:39:17,694 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 06:39:17,860 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 06:39:18,148 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 06:39:18,314 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-06-05 06:39:18,510 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-06-05 06:39:18,871 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2021-06-05 06:39:19,021 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2021-06-05 06:39:19,192 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-06-05 06:39:19,623 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-06-05 06:39:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:19,792 INFO L93 Difference]: Finished difference Result 3293 states and 10339 transitions. [2021-06-05 06:39:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:39:19,793 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 06:39:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:19,797 INFO L225 Difference]: With dead ends: 3293 [2021-06-05 06:39:19,797 INFO L226 Difference]: Without dead ends: 3220 [2021-06-05 06:39:19,797 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 4252.5ms TimeCoverageRelationStatistics Valid=647, Invalid=2893, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:39:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2021-06-05 06:39:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2049. [2021-06-05 06:39:19,821 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) [2021-06-05 06:39:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 6978 transitions. [2021-06-05 06:39:19,824 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 6978 transitions. Word has length 26 [2021-06-05 06:39:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:19,825 INFO L482 AbstractCegarLoop]: Abstraction has 2049 states and 6978 transitions. [2021-06-05 06:39:19,825 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 06:39:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 6978 transitions. [2021-06-05 06:39:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:19,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:19,827 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:20,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3341 [2021-06-05 06:39:20,029 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -272116042, now seen corresponding path program 52 times [2021-06-05 06:39:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:20,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729323226] [2021-06-05 06:39:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:20,423 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 06:39:20,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:20,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729323226] [2021-06-05 06:39:20,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729323226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:20,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175316385] [2021-06-05 06:39:20,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:20,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:20,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:20,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:20,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:20,827 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:39:20,933 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]} [2021-06-05 06:39:20,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:20,961 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:20,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:20,963 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:21,335 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 158 [2021-06-05 06:39:21,335 INFO L628 ElimStorePlain]: treesize reduction 283, result has 56.5 percent of original size [2021-06-05 06:39:21,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:21,361 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:21,361 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:39:21,362 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:21,502 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-06-05 06:39:21,502 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:21,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:21,522 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:21,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:21,525 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:21,807 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 149 [2021-06-05 06:39:21,808 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.4 percent of original size [2021-06-05 06:39:21,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:21,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:21,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:39:21,831 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:22,091 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2021-06-05 06:39:22,092 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.3 percent of original size [2021-06-05 06:39:22,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:22,111 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:22,111 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:39:22,113 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:22,239 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-06-05 06:39:22,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:22,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:22,257 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:22,257 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:39:22,261 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:22,384 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:39:22,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:22,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:22,406 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:22,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:22,410 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:22,526 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 06:39:22,526 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:22,546 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:22,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:39:22,547 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:22,661 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:39:22,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:22,689 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 06:39:22,689 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:658, output treesize:346 [2021-06-05 06:39:22,892 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-05 06:39:22,990 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 06:39:22,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175316385] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:22,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:22,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:22,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515614627] [2021-06-05 06:39:22,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:22,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:22,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:22,991 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) [2021-06-05 06:39:24,216 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2021-06-05 06:39:24,737 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-06-05 06:39:24,953 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:39:25,329 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-06-05 06:39:25,640 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2021-06-05 06:39:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:25,709 INFO L93 Difference]: Finished difference Result 2966 states and 9810 transitions. [2021-06-05 06:39:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:39:25,709 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 06:39:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:25,713 INFO L225 Difference]: With dead ends: 2966 [2021-06-05 06:39:25,713 INFO L226 Difference]: Without dead ends: 2951 [2021-06-05 06:39:25,713 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 3073.5ms TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:39:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-06-05 06:39:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2061. [2021-06-05 06:39:25,735 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) [2021-06-05 06:39:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 7013 transitions. [2021-06-05 06:39:25,738 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 7013 transitions. Word has length 26 [2021-06-05 06:39:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:25,738 INFO L482 AbstractCegarLoop]: Abstraction has 2061 states and 7013 transitions. [2021-06-05 06:39:25,738 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 06:39:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 7013 transitions. [2021-06-05 06:39:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:25,740 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:25,741 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:25,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3479,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:25,941 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1962058946, now seen corresponding path program 53 times [2021-06-05 06:39:25,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:25,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146246235] [2021-06-05 06:39:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:26,288 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 06:39:26,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:26,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146246235] [2021-06-05 06:39:26,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146246235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:26,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621070033] [2021-06-05 06:39:26,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:26,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:26,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:26,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:39:26,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:26,792 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-05 06:39:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:26,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:26,904 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 16 treesize of output 18 [2021-06-05 06:39:26,908 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:26,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:26,920 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:26,920 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 21 treesize of output 17 [2021-06-05 06:39:26,922 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:27,046 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 06:39:27,047 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:27,059 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:27,060 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:27,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:27,069 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:39:27,072 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:27,190 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:39:27,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:27,202 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,202 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 26 treesize of output 24 [2021-06-05 06:39:27,203 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:27,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:27,213 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:27,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:27,214 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:27,322 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:39:27,322 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:27,334 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:27,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:27,335 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:27,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:27,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:39:27,347 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:27,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:27,447 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 06:39:27,447 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:341, output treesize:174 [2021-06-05 06:39:27,629 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 06:39:27,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621070033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:27,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:27,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:39:27,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571797777] [2021-06-05 06:39:27,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:27,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:27,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:27,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:27,630 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) [2021-06-05 06:39:28,154 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-06-05 06:39:28,357 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-06-05 06:39:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:28,790 INFO L93 Difference]: Finished difference Result 2612 states and 8738 transitions. [2021-06-05 06:39:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:39:28,790 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 06:39:28,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:28,793 INFO L225 Difference]: With dead ends: 2612 [2021-06-05 06:39:28,793 INFO L226 Difference]: Without dead ends: 2587 [2021-06-05 06:39:28,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1669.0ms TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:39:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2021-06-05 06:39:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2061. [2021-06-05 06:39:28,813 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) [2021-06-05 06:39:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 7013 transitions. [2021-06-05 06:39:28,816 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 7013 transitions. Word has length 26 [2021-06-05 06:39:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:28,816 INFO L482 AbstractCegarLoop]: Abstraction has 2061 states and 7013 transitions. [2021-06-05 06:39:28,817 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 06:39:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 7013 transitions. [2021-06-05 06:39:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:28,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:28,819 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:29,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3521,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:29,019 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:29,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1086187700, now seen corresponding path program 54 times [2021-06-05 06:39:29,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:29,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653139498] [2021-06-05 06:39:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:29,438 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 06:39:29,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:29,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653139498] [2021-06-05 06:39:29,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653139498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:29,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027727856] [2021-06-05 06:39:29,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:29,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:29,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:29,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:29,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,681 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:29,681 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,689 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:29,689 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,700 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:29,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:29,701 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,709 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:29,709 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:29,720 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,731 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:29,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:29,732 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,740 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:29,741 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:29,752 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,762 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,762 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 16 treesize of output 18 [2021-06-05 06:39:29,765 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,773 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,773 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 26 treesize of output 16 [2021-06-05 06:39:29,774 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,782 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:29,782 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:29,795 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,805 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:29,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:29,806 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,815 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:29,818 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,825 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:29,826 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,831 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 31 treesize of output 19 [2021-06-05 06:39:29,832 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,899 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,901 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:39:29,901 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:39:30,077 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 06:39:30,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027727856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:30,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:30,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:39:30,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857899059] [2021-06-05 06:39:30,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:30,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:30,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:30,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:30,077 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) [2021-06-05 06:39:30,426 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-06-05 06:39:31,418 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 06:39:31,845 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-05 06:39:32,107 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:39:32,428 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-06-05 06:39:32,716 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2021-06-05 06:39:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:32,777 INFO L93 Difference]: Finished difference Result 2664 states and 8880 transitions. [2021-06-05 06:39:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:39:32,778 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 06:39:32,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:32,781 INFO L225 Difference]: With dead ends: 2664 [2021-06-05 06:39:32,781 INFO L226 Difference]: Without dead ends: 2649 [2021-06-05 06:39:32,781 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2760.0ms TimeCoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:39:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2021-06-05 06:39:32,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2049. [2021-06-05 06:39:32,801 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) [2021-06-05 06:39:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 6978 transitions. [2021-06-05 06:39:32,805 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 6978 transitions. Word has length 26 [2021-06-05 06:39:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:32,805 INFO L482 AbstractCegarLoop]: Abstraction has 2049 states and 6978 transitions. [2021-06-05 06:39:32,805 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 06:39:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 6978 transitions. [2021-06-05 06:39:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:32,807 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:32,807 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:33,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3555,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:33,007 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:33,008 INFO L82 PathProgramCache]: Analyzing trace with hash 935709652, now seen corresponding path program 61 times [2021-06-05 06:39:33,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:33,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105427075] [2021-06-05 06:39:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:33,351 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 06:39:33,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:33,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105427075] [2021-06-05 06:39:33,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105427075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:33,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954064426] [2021-06-05 06:39:33,351 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:33,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:33,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:33,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,816 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 35 treesize of output 19 [2021-06-05 06:39:33,816 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:33,823 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,829 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:39:33,830 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:33,837 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:33,844 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:33,851 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,858 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 39 treesize of output 16 [2021-06-05 06:39:33,858 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:39:33,865 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:39:33,872 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:33,879 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:33,886 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:39:33,893 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:33,900 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:33,906 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:33,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:33,910 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 39 treesize of output 19 [2021-06-05 06:39:33,910 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:33,935 INFO L628 ElimStorePlain]: treesize reduction 32, result has 45.8 percent of original size [2021-06-05 06:39:33,936 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 06:39:33,936 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:39:33,953 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 06:39:33,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954064426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:33,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:33,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:39:33,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236552392] [2021-06-05 06:39:33,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:39:33,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:33,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:39:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:39:33,953 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) [2021-06-05 06:39:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:36,111 INFO L93 Difference]: Finished difference Result 2625 states and 8625 transitions. [2021-06-05 06:39:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:39:36,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:36,115 INFO L225 Difference]: With dead ends: 2625 [2021-06-05 06:39:36,115 INFO L226 Difference]: Without dead ends: 2603 [2021-06-05 06:39:36,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 2253.5ms TimeCoverageRelationStatistics Valid=525, Invalid=2127, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:39:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-05 06:39:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2047. [2021-06-05 06:39:36,136 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) [2021-06-05 06:39:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 6973 transitions. [2021-06-05 06:39:36,139 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 6973 transitions. Word has length 26 [2021-06-05 06:39:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:36,139 INFO L482 AbstractCegarLoop]: Abstraction has 2047 states and 6973 transitions. [2021-06-05 06:39:36,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 6973 transitions. [2021-06-05 06:39:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:36,141 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:36,141 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:36,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3572 [2021-06-05 06:39:36,342 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1861203518, now seen corresponding path program 62 times [2021-06-05 06:39:36,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:36,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533844513] [2021-06-05 06:39:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:36,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:36,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533844513] [2021-06-05 06:39:36,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533844513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:36,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052927637] [2021-06-05 06:39:36,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:36,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:39:36,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:36,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:36,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:36,946 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 06:39:36,998 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_470], 6=[v_prenex_472, v_prenex_474]} [2021-06-05 06:39:37,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:37,005 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,010 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2021-06-05 06:39:37,011 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,118 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-06-05 06:39:37,119 INFO L628 ElimStorePlain]: treesize reduction 162, result has 46.2 percent of original size [2021-06-05 06:39:37,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:37,124 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:37,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,163 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:39:37,164 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,195 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:37,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:39:37,201 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,228 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:37,230 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:39:37,230 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:365, output treesize:33 [2021-06-05 06:39:37,274 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 06:39:37,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052927637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:37,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:37,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:39:37,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046906490] [2021-06-05 06:39:37,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:37,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:37,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:37,275 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) [2021-06-05 06:39:38,559 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 06:39:38,801 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 06:39:38,937 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-05 06:39:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:39,045 INFO L93 Difference]: Finished difference Result 2959 states and 9765 transitions. [2021-06-05 06:39:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:39:39,045 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 06:39:39,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:39,049 INFO L225 Difference]: With dead ends: 2959 [2021-06-05 06:39:39,049 INFO L226 Difference]: Without dead ends: 2919 [2021-06-05 06:39:39,049 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1898.6ms TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:39:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-06-05 06:39:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2063. [2021-06-05 06:39:39,070 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) [2021-06-05 06:39:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 7037 transitions. [2021-06-05 06:39:39,073 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 7037 transitions. Word has length 26 [2021-06-05 06:39:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:39,073 INFO L482 AbstractCegarLoop]: Abstraction has 2063 states and 7037 transitions. [2021-06-05 06:39:39,073 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 06:39:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 7037 transitions. [2021-06-05 06:39:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:39,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:39,075 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:39,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3662,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:39,276 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:39,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:39,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1211067586, now seen corresponding path program 63 times [2021-06-05 06:39:39,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:39,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229053688] [2021-06-05 06:39:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:39,524 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 06:39:39,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:39,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229053688] [2021-06-05 06:39:39,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229053688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:39,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086963178] [2021-06-05 06:39:39,525 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 [2021-06-05 06:39:39,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:39,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:39,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:39,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:39,931 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-05 06:39:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,112 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:39:40,118 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,166 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-05 06:39:40,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:40,172 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,308 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2021-06-05 06:39:41,309 INFO L628 ElimStorePlain]: treesize reduction 42, result has 95.5 percent of original size [2021-06-05 06:39:41,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,367 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-06-05 06:39:41,367 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 35 treesize of output 43 [2021-06-05 06:39:41,369 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,422 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2021-06-05 06:39:41,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:41,427 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:42,563 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 188 DAG size of output: 183 [2021-06-05 06:39:42,564 INFO L628 ElimStorePlain]: treesize reduction 24, result has 97.4 percent of original size [2021-06-05 06:39:42,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:42,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:42,607 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-05 06:39:42,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:42,611 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:42,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:42,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:42,648 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-05 06:39:42,648 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 [2021-06-05 06:39:42,652 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,667 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2021-06-05 06:39:43,667 INFO L628 ElimStorePlain]: treesize reduction 44, result has 94.9 percent of original size [2021-06-05 06:39:43,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,711 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-06-05 06:39:43,711 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 [2021-06-05 06:39:43,713 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,748 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-06-05 06:39:43,748 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 [2021-06-05 06:39:43,750 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,234 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-06-05 06:39:44,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:44,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,283 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-05 06:39:44,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:44,288 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,326 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-05 06:39:44,327 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 [2021-06-05 06:39:44,331 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,222 WARN L205 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 152 [2021-06-05 06:39:45,222 INFO L628 ElimStorePlain]: treesize reduction 18, result has 97.7 percent of original size [2021-06-05 06:39:45,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,274 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2021-06-05 06:39:45,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 06:39:45,280 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,311 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:45,321 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,738 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-06-05 06:39:45,739 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,782 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-05 06:39:45,782 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 [2021-06-05 06:39:45,784 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,818 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-06-05 06:39:45,818 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 [2021-06-05 06:39:45,820 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:46,598 WARN L205 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2021-06-05 06:39:46,599 INFO L628 ElimStorePlain]: treesize reduction 11, result has 98.4 percent of original size [2021-06-05 06:39:46,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:46,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:46,647 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-06-05 06:39:46,647 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 31 treesize of output 43 [2021-06-05 06:39:46,651 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:46,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:46,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:46,691 INFO L354 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2021-06-05 06:39:46,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 [2021-06-05 06:39:46,695 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:47,073 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:39:47,073 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:47,117 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 15 xjuncts. [2021-06-05 06:39:47,117 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 24 variables, input treesize:945, output treesize:1467 [2021-06-05 06:39:47,553 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 49 [2021-06-05 06:39:47,658 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 06:39:47,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086963178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:47,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:47,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-05 06:39:47,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74594177] [2021-06-05 06:39:47,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:47,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:47,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:47,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:47,659 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) [2021-06-05 06:39:48,277 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 31 [2021-06-05 06:39:48,516 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 37 [2021-06-05 06:39:48,912 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2021-06-05 06:39:49,398 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-06-05 06:39:49,556 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2021-06-05 06:39:49,866 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2021-06-05 06:39:50,296 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-06-05 06:39:50,515 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-06-05 06:39:50,701 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2021-06-05 06:39:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:50,791 INFO L93 Difference]: Finished difference Result 2842 states and 9205 transitions. [2021-06-05 06:39:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:39:50,791 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 [2021-06-05 06:39:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:50,795 INFO L225 Difference]: With dead ends: 2842 [2021-06-05 06:39:50,795 INFO L226 Difference]: Without dead ends: 2798 [2021-06-05 06:39:50,795 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 3544.4ms TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:39:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-06-05 06:39:50,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2136. [2021-06-05 06:39:50,817 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) [2021-06-05 06:39:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 7272 transitions. [2021-06-05 06:39:50,820 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 7272 transitions. Word has length 26 [2021-06-05 06:39:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:50,820 INFO L482 AbstractCegarLoop]: Abstraction has 2136 states and 7272 transitions. [2021-06-05 06:39:50,820 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) [2021-06-05 06:39:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 7272 transitions. [2021-06-05 06:39:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:50,822 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:50,823 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:51,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3676,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:51,023 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:51,023 INFO L82 PathProgramCache]: Analyzing trace with hash -550813574, now seen corresponding path program 55 times [2021-06-05 06:39:51,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:51,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436924048] [2021-06-05 06:39:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:51,338 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 06:39:51,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:51,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436924048] [2021-06-05 06:39:51,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436924048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:51,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627534339] [2021-06-05 06:39:51,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:51,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:51,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:51,792 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 06:39:51,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:51,914 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:51,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:39:51,916 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:51,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:51,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:51,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-05 06:39:51,943 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,257 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 147 [2021-06-05 06:39:52,257 INFO L628 ElimStorePlain]: treesize reduction 194, result has 64.3 percent of original size [2021-06-05 06:39:52,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,281 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:52,281 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:39:52,283 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,415 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-05 06:39:52,416 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,437 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:52,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:52,439 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,565 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-05 06:39:52,565 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,589 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:52,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:39:52,590 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,718 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-06-05 06:39:52,718 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,740 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:52,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:52,743 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,867 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 06:39:52,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,888 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:52,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:39:52,889 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,010 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 06:39:53,011 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:53,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,027 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:53,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:53,033 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,271 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 120 [2021-06-05 06:39:53,272 INFO L628 ElimStorePlain]: treesize reduction 12, result has 95.8 percent of original size [2021-06-05 06:39:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,288 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:53,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:53,291 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,512 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2021-06-05 06:39:53,512 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.0 percent of original size [2021-06-05 06:39:53,528 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 06:39:53,528 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 24 variables, input treesize:583, output treesize:253 [2021-06-05 06:39:53,704 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-06-05 06:39:53,795 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 06:39:53,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627534339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:53,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:53,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:53,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278631286] [2021-06-05 06:39:53,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:53,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:53,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:53,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:53,796 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) [2021-06-05 06:39:54,872 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2021-06-05 06:39:55,081 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-05 06:39:55,288 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 06:39:55,685 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-06-05 06:39:56,016 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-06-05 06:39:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:56,085 INFO L93 Difference]: Finished difference Result 3051 states and 10102 transitions. [2021-06-05 06:39:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:39:56,086 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 06:39:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:56,089 INFO L225 Difference]: With dead ends: 3051 [2021-06-05 06:39:56,089 INFO L226 Difference]: Without dead ends: 3036 [2021-06-05 06:39:56,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2655.9ms TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:39:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2021-06-05 06:39:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2138. [2021-06-05 06:39:56,112 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) [2021-06-05 06:39:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 7271 transitions. [2021-06-05 06:39:56,115 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 7271 transitions. Word has length 26 [2021-06-05 06:39:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:56,115 INFO L482 AbstractCegarLoop]: Abstraction has 2138 states and 7271 transitions. [2021-06-05 06:39:56,115 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 06:39:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 7271 transitions. [2021-06-05 06:39:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:56,118 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:56,118 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:56,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3761,119 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:56,318 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:56,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2054210818, now seen corresponding path program 56 times [2021-06-05 06:39:56,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:56,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251123610] [2021-06-05 06:39:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:56,711 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 06:39:56,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:56,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251123610] [2021-06-05 06:39:56,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251123610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:56,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297782724] [2021-06-05 06:39:56,712 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 [2021-06-05 06:39:56,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:39:56,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:56,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:56,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:56,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,925 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:56,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:56,926 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,933 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:56,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:56,934 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,944 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:56,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:56,946 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,954 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:56,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:56,954 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:56,965 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 33 treesize of output 27 [2021-06-05 06:39:56,966 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,976 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:56,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:56,978 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,986 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:56,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:56,986 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:56,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:39:56,998 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:57,011 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,019 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:57,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:57,019 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,028 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:57,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:57,028 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,039 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:57,041 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,053 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:57,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:39:57,055 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,064 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:57,068 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,075 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:57,075 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 31 treesize of output 19 [2021-06-05 06:39:57,076 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,081 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:57,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:39:57,082 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,150 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,152 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:39:57,152 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:39:57,359 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 06:39:57,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297782724] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:57,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:57,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:39:57,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459311295] [2021-06-05 06:39:57,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:57,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:57,360 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) [2021-06-05 06:39:57,641 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-06-05 06:39:58,434 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-06-05 06:39:58,611 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:39:58,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:58,687 INFO L93 Difference]: Finished difference Result 2900 states and 9631 transitions. [2021-06-05 06:39:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:39:58,688 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 06:39:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:58,691 INFO L225 Difference]: With dead ends: 2900 [2021-06-05 06:39:58,692 INFO L226 Difference]: Without dead ends: 2875 [2021-06-05 06:39:58,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1563.2ms TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:39:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-06-05 06:39:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2131. [2021-06-05 06:39:58,712 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) [2021-06-05 06:39:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 7241 transitions. [2021-06-05 06:39:58,716 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 7241 transitions. Word has length 26 [2021-06-05 06:39:58,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:58,716 INFO L482 AbstractCegarLoop]: Abstraction has 2131 states and 7241 transitions. [2021-06-05 06:39:58,716 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 06:39:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 7241 transitions. [2021-06-05 06:39:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:58,718 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:58,718 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:58,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3802,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:58,920 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash 807490168, now seen corresponding path program 57 times [2021-06-05 06:39:58,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:58,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453142295] [2021-06-05 06:39:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:59,273 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 06:39:59,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:59,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453142295] [2021-06-05 06:39:59,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453142295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:59,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789194829] [2021-06-05 06:39:59,273 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 [2021-06-05 06:39:59,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:59,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:59,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:59,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:59,798 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 06:40:00,123 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2021-06-05 06:40:00,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:00,243 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:40:00,249 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,413 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-06-05 06:40:00,414 INFO L628 ElimStorePlain]: treesize reduction 143, result has 51.5 percent of original size [2021-06-05 06:40:00,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,418 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 06:40:00,419 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:00,490 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:00,495 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,543 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,547 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 06:40:00,548 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,592 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,595 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 06:40:00,595 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:333, output treesize:51 [2021-06-05 06:40:00,645 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 06:40:00,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789194829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:00,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:00,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:40:00,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485876041] [2021-06-05 06:40:00,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:00,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:00,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:00,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:00,646 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) [2021-06-05 06:40:01,392 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-05 06:40:01,758 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 06:40:02,189 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-06-05 06:40:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:02,317 INFO L93 Difference]: Finished difference Result 2671 states and 8927 transitions. [2021-06-05 06:40:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:40:02,318 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 06:40:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:02,321 INFO L225 Difference]: With dead ends: 2671 [2021-06-05 06:40:02,321 INFO L226 Difference]: Without dead ends: 2656 [2021-06-05 06:40:02,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2165.1ms TimeCoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:40:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-06-05 06:40:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2119. [2021-06-05 06:40:02,341 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) [2021-06-05 06:40:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 7206 transitions. [2021-06-05 06:40:02,344 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 7206 transitions. Word has length 26 [2021-06-05 06:40:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:02,344 INFO L482 AbstractCegarLoop]: Abstraction has 2119 states and 7206 transitions. [2021-06-05 06:40:02,344 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 06:40:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 7206 transitions. [2021-06-05 06:40:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:02,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:02,347 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:02,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3819 [2021-06-05 06:40:02,547 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:02,547 INFO L82 PathProgramCache]: Analyzing trace with hash 243784254, now seen corresponding path program 58 times [2021-06-05 06:40:02,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:02,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31739370] [2021-06-05 06:40:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:02,761 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2021-06-05 06:40:02,897 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2021-06-05 06:40:03,082 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2021-06-05 06:40:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:03,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:03,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31739370] [2021-06-05 06:40:03,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31739370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:03,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113041089] [2021-06-05 06:40:03,194 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 [2021-06-05 06:40:03,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:03,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:03,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:40:03,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:03,553 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 06:40:03,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:03,678 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:03,678 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 28 treesize of output 20 [2021-06-05 06:40:03,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:03,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:03,689 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:03,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:03,692 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:03,817 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:40:03,817 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:03,830 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:03,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:03,831 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:03,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:03,840 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:03,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:03,843 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:03,954 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:40:03,954 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:03,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:03,967 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:03,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:03,968 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:03,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:03,977 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:03,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select 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 06:40:03,979 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:04,083 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 06:40:04,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:04,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:04,096 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:04,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:40:04,097 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:04,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:04,106 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:04,107 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 33 treesize of output 27 [2021-06-05 06:40:04,109 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:04,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:04,209 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 06:40:04,209 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:333, output treesize:174 [2021-06-05 06:40:04,391 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 06:40:04,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113041089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:04,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:04,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:40:04,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533966532] [2021-06-05 06:40:04,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:04,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:04,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:04,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:04,391 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) [2021-06-05 06:40:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:05,449 INFO L93 Difference]: Finished difference Result 2740 states and 9175 transitions. [2021-06-05 06:40:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:40:05,449 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 06:40:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:05,453 INFO L225 Difference]: With dead ends: 2740 [2021-06-05 06:40:05,453 INFO L226 Difference]: Without dead ends: 2725 [2021-06-05 06:40:05,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1612.8ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:40:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-06-05 06:40:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2113. [2021-06-05 06:40:05,474 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) [2021-06-05 06:40:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 7188 transitions. [2021-06-05 06:40:05,478 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 7188 transitions. Word has length 26 [2021-06-05 06:40:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:05,478 INFO L482 AbstractCegarLoop]: Abstraction has 2113 states and 7188 transitions. [2021-06-05 06:40:05,478 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 06:40:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 7188 transitions. [2021-06-05 06:40:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:05,480 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:05,480 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:05,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3838 [2021-06-05 06:40:05,681 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:05,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1128807410, now seen corresponding path program 64 times [2021-06-05 06:40:05,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:05,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170698849] [2021-06-05 06:40:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:05,962 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 06:40:05,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:05,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170698849] [2021-06-05 06:40:05,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170698849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:05,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985373190] [2021-06-05 06:40:05,963 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 [2021-06-05 06:40:05,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:05,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:05,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:05,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:06,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:40:06,395 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:40:06,402 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:40:06,409 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:40:06,417 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:06,424 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,430 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 41 treesize of output 16 [2021-06-05 06:40:06,431 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,438 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 37 treesize of output 19 [2021-06-05 06:40:06,438 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:40:06,445 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:40:06,452 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:40:06,459 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:40:06,465 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:06,472 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select 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 06:40:06,479 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,485 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 35 treesize of output 19 [2021-06-05 06:40:06,485 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:06,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:06,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:06,489 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,513 INFO L628 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2021-06-05 06:40:06,514 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 06:40:06,514 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:40:06,546 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 06:40:06,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985373190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:06,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:06,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:40:06,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26994443] [2021-06-05 06:40:06,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:06,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:06,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:06,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:06,547 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) [2021-06-05 06:40:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:07,945 INFO L93 Difference]: Finished difference Result 2992 states and 9892 transitions. [2021-06-05 06:40:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:40:07,946 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 06:40:07,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:07,949 INFO L225 Difference]: With dead ends: 2992 [2021-06-05 06:40:07,949 INFO L226 Difference]: Without dead ends: 2955 [2021-06-05 06:40:07,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1436.2ms TimeCoverageRelationStatistics Valid=344, Invalid=1296, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:40:07,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-06-05 06:40:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2104. [2021-06-05 06:40:07,973 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) [2021-06-05 06:40:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 7153 transitions. [2021-06-05 06:40:07,977 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 7153 transitions. Word has length 26 [2021-06-05 06:40:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:07,977 INFO L482 AbstractCegarLoop]: Abstraction has 2104 states and 7153 transitions. [2021-06-05 06:40:07,977 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 06:40:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 7153 transitions. [2021-06-05 06:40:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:07,979 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:07,979 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:08,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3871,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:08,179 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:08,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:08,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1868598568, now seen corresponding path program 59 times [2021-06-05 06:40:08,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:08,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068562119] [2021-06-05 06:40:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:08,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:08,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068562119] [2021-06-05 06:40:08,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068562119] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:08,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414909941] [2021-06-05 06:40:08,219 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 [2021-06-05 06:40:08,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:40:08,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:08,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:08,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:08,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414909941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:08,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:08,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:40:08,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000581066] [2021-06-05 06:40:08,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:40:08,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:08,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:40:08,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:40:08,344 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) [2021-06-05 06:40:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:09,219 INFO L93 Difference]: Finished difference Result 5069 states and 15729 transitions. [2021-06-05 06:40:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:40:09,219 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:09,225 INFO L225 Difference]: With dead ends: 5069 [2021-06-05 06:40:09,226 INFO L226 Difference]: Without dead ends: 5069 [2021-06-05 06:40:09,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 510.2ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:40:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2021-06-05 06:40:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 2297. [2021-06-05 06:40:09,260 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) [2021-06-05 06:40:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 7924 transitions. [2021-06-05 06:40:09,264 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 7924 transitions. Word has length 28 [2021-06-05 06:40:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:09,264 INFO L482 AbstractCegarLoop]: Abstraction has 2297 states and 7924 transitions. [2021-06-05 06:40:09,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 7924 transitions. [2021-06-05 06:40:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:09,267 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:09,267 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:09,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3961,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:09,467 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:09,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1450049884, now seen corresponding path program 60 times [2021-06-05 06:40:09,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:09,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407781638] [2021-06-05 06:40:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:09,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:09,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407781638] [2021-06-05 06:40:09,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407781638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:09,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898019437] [2021-06-05 06:40:09,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:09,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:40:09,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:09,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:09,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:09,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898019437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:09,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:09,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:40:09,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686324097] [2021-06-05 06:40:09,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:40:09,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:09,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:40:09,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:40:09,648 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) [2021-06-05 06:40:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:10,841 INFO L93 Difference]: Finished difference Result 6700 states and 20456 transitions. [2021-06-05 06:40:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:40:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:10,850 INFO L225 Difference]: With dead ends: 6700 [2021-06-05 06:40:10,850 INFO L226 Difference]: Without dead ends: 6700 [2021-06-05 06:40:10,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 702.6ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:40:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-06-05 06:40:10,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 2308. [2021-06-05 06:40:10,903 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) [2021-06-05 06:40:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 7978 transitions. [2021-06-05 06:40:10,907 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 7978 transitions. Word has length 28 [2021-06-05 06:40:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:10,907 INFO L482 AbstractCegarLoop]: Abstraction has 2308 states and 7978 transitions. [2021-06-05 06:40:10,907 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 06:40:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 7978 transitions. [2021-06-05 06:40:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:10,910 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:10,910 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:11,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3962,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:11,117 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:11,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2017001964, now seen corresponding path program 61 times [2021-06-05 06:40:11,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:11,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329563761] [2021-06-05 06:40:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:11,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:11,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329563761] [2021-06-05 06:40:11,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329563761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:11,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129009698] [2021-06-05 06:40:11,155 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 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:11,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:11,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:11,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129009698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:11,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:11,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:40:11,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553978032] [2021-06-05 06:40:11,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:40:11,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:11,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:40:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:40:11,279 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) [2021-06-05 06:40:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:12,380 INFO L93 Difference]: Finished difference Result 6089 states and 18976 transitions. [2021-06-05 06:40:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:40:12,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:12,388 INFO L225 Difference]: With dead ends: 6089 [2021-06-05 06:40:12,389 INFO L226 Difference]: Without dead ends: 6089 [2021-06-05 06:40:12,390 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 691.9ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 06:40:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2021-06-05 06:40:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 2256. [2021-06-05 06:40:12,434 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) [2021-06-05 06:40:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 7746 transitions. [2021-06-05 06:40:12,438 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 7746 transitions. Word has length 28 [2021-06-05 06:40:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:12,438 INFO L482 AbstractCegarLoop]: Abstraction has 2256 states and 7746 transitions. [2021-06-05 06:40:12,438 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 06:40:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 7746 transitions. [2021-06-05 06:40:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:12,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:12,441 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:12,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3963 [2021-06-05 06:40:12,650 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:12,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1095937010, now seen corresponding path program 62 times [2021-06-05 06:40:12,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:12,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178119170] [2021-06-05 06:40:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:12,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:12,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178119170] [2021-06-05 06:40:12,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178119170] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:12,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418147915] [2021-06-05 06:40:12,689 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 [2021-06-05 06:40:12,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:12,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:12,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:12,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:12,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418147915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:12,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:12,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:40:12,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608804649] [2021-06-05 06:40:12,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:40:12,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:12,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:40:12,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:40:12,807 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) [2021-06-05 06:40:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:13,786 INFO L93 Difference]: Finished difference Result 5162 states and 15913 transitions. [2021-06-05 06:40:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:40:13,786 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:13,792 INFO L225 Difference]: With dead ends: 5162 [2021-06-05 06:40:13,792 INFO L226 Difference]: Without dead ends: 5162 [2021-06-05 06:40:13,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 611.7ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:40:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2021-06-05 06:40:13,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 2269. [2021-06-05 06:40:13,827 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) [2021-06-05 06:40:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 7786 transitions. [2021-06-05 06:40:13,830 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 7786 transitions. Word has length 28 [2021-06-05 06:40:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:13,831 INFO L482 AbstractCegarLoop]: Abstraction has 2269 states and 7786 transitions. [2021-06-05 06:40:13,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 7786 transitions. [2021-06-05 06:40:13,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:13,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:13,833 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:14,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3964,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:14,034 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1989400020, now seen corresponding path program 65 times [2021-06-05 06:40:14,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:14,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354092115] [2021-06-05 06:40:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:14,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:14,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354092115] [2021-06-05 06:40:14,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354092115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:14,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934993007] [2021-06-05 06:40:14,073 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 [2021-06-05 06:40:14,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:40:14,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:14,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:14,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:14,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934993007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:14,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:14,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:40:14,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018808352] [2021-06-05 06:40:14,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:14,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:14,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:14,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:14,183 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) [2021-06-05 06:40:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:14,714 INFO L93 Difference]: Finished difference Result 4589 states and 14330 transitions. [2021-06-05 06:40:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:40:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:14,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:14,719 INFO L225 Difference]: With dead ends: 4589 [2021-06-05 06:40:14,720 INFO L226 Difference]: Without dead ends: 4589 [2021-06-05 06:40:14,720 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 298.2ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:40:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2021-06-05 06:40:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 2339. [2021-06-05 06:40:14,762 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) [2021-06-05 06:40:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 7989 transitions. [2021-06-05 06:40:14,765 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 7989 transitions. Word has length 28 [2021-06-05 06:40:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:14,766 INFO L482 AbstractCegarLoop]: Abstraction has 2339 states and 7989 transitions. [2021-06-05 06:40:14,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 7989 transitions. [2021-06-05 06:40:14,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:14,768 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:14,768 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:14,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3965 [2021-06-05 06:40:14,968 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:14,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:14,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1848031388, now seen corresponding path program 63 times [2021-06-05 06:40:14,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:14,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155155732] [2021-06-05 06:40:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:14,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:14,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155155732] [2021-06-05 06:40:14,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155155732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:14,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780711019] [2021-06-05 06:40:14,998 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 [2021-06-05 06:40:15,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:40:15,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:15,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:40:15,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:15,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780711019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:15,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:15,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:40:15,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105037962] [2021-06-05 06:40:15,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:40:15,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:40:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:40:15,082 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) [2021-06-05 06:40:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:15,241 INFO L93 Difference]: Finished difference Result 3853 states and 12551 transitions. [2021-06-05 06:40:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:40:15,241 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:15,246 INFO L225 Difference]: With dead ends: 3853 [2021-06-05 06:40:15,246 INFO L226 Difference]: Without dead ends: 3829 [2021-06-05 06:40:15,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2021-06-05 06:40:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 2701. [2021-06-05 06:40:15,275 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) [2021-06-05 06:40:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 9410 transitions. [2021-06-05 06:40:15,280 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 9410 transitions. Word has length 28 [2021-06-05 06:40:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:15,280 INFO L482 AbstractCegarLoop]: Abstraction has 2701 states and 9410 transitions. [2021-06-05 06:40:15,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 9410 transitions. [2021-06-05 06:40:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:15,283 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:15,283 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:15,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3966 [2021-06-05 06:40:15,497 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:15,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1411062680, now seen corresponding path program 64 times [2021-06-05 06:40:15,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:15,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462570149] [2021-06-05 06:40:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:15,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:15,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462570149] [2021-06-05 06:40:15,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462570149] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:15,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414251380] [2021-06-05 06:40:15,528 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 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:15,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:15,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:15,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:15,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:15,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414251380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:15,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:15,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:40:15,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556535589] [2021-06-05 06:40:15,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:15,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:15,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:15,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:15,624 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) [2021-06-05 06:40:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:16,177 INFO L93 Difference]: Finished difference Result 4524 states and 14456 transitions. [2021-06-05 06:40:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:40:16,178 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:16,183 INFO L225 Difference]: With dead ends: 4524 [2021-06-05 06:40:16,183 INFO L226 Difference]: Without dead ends: 4477 [2021-06-05 06:40:16,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 327.7ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:40:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2021-06-05 06:40:16,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 2866. [2021-06-05 06:40:16,218 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) [2021-06-05 06:40:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 10044 transitions. [2021-06-05 06:40:16,223 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 10044 transitions. Word has length 28 [2021-06-05 06:40:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:16,223 INFO L482 AbstractCegarLoop]: Abstraction has 2866 states and 10044 transitions. [2021-06-05 06:40:16,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 10044 transitions. [2021-06-05 06:40:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:16,226 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:16,226 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:16,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3967 [2021-06-05 06:40:16,433 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:16,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1347815140, now seen corresponding path program 65 times [2021-06-05 06:40:16,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:16,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135150509] [2021-06-05 06:40:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:16,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:16,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135150509] [2021-06-05 06:40:16,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135150509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:16,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618800759] [2021-06-05 06:40:16,466 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 [2021-06-05 06:40:16,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:40:16,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:16,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:16,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:16,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618800759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:16,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:16,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:40:16,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29072746] [2021-06-05 06:40:16,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:16,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:16,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:16,574 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) [2021-06-05 06:40:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:17,209 INFO L93 Difference]: Finished difference Result 4809 states and 15088 transitions. [2021-06-05 06:40:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:40:17,210 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:17,216 INFO L225 Difference]: With dead ends: 4809 [2021-06-05 06:40:17,216 INFO L226 Difference]: Without dead ends: 4783 [2021-06-05 06:40:17,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 413.8ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:40:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2021-06-05 06:40:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 2887. [2021-06-05 06:40:17,255 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) [2021-06-05 06:40:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 10136 transitions. [2021-06-05 06:40:17,279 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 10136 transitions. Word has length 28 [2021-06-05 06:40:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:17,279 INFO L482 AbstractCegarLoop]: Abstraction has 2887 states and 10136 transitions. [2021-06-05 06:40:17,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 10136 transitions. [2021-06-05 06:40:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:17,283 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:17,283 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:17,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3968,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:17,483 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash -675402358, now seen corresponding path program 66 times [2021-06-05 06:40:17,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:17,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571467935] [2021-06-05 06:40:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:17,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:17,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571467935] [2021-06-05 06:40:17,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571467935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:17,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6886111] [2021-06-05 06:40:17,514 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 [2021-06-05 06:40:17,538 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:40:17,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:17,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:17,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:17,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6886111] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:17,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:17,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:40:17,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631484285] [2021-06-05 06:40:17,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:17,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:17,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:17,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:17,620 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) [2021-06-05 06:40:18,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:18,255 INFO L93 Difference]: Finished difference Result 4801 states and 15088 transitions. [2021-06-05 06:40:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:40:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:18,261 INFO L225 Difference]: With dead ends: 4801 [2021-06-05 06:40:18,261 INFO L226 Difference]: Without dead ends: 4786 [2021-06-05 06:40:18,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 411.2ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:40:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2021-06-05 06:40:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 2887. [2021-06-05 06:40:18,301 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) [2021-06-05 06:40:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 10123 transitions. [2021-06-05 06:40:18,306 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 10123 transitions. Word has length 28 [2021-06-05 06:40:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:18,306 INFO L482 AbstractCegarLoop]: Abstraction has 2887 states and 10123 transitions. [2021-06-05 06:40:18,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 10123 transitions. [2021-06-05 06:40:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:18,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:18,309 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:18,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3969 [2021-06-05 06:40:18,509 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:18,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1724201280, now seen corresponding path program 67 times [2021-06-05 06:40:18,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:18,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846071217] [2021-06-05 06:40:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:18,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:18,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846071217] [2021-06-05 06:40:18,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846071217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:18,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861004860] [2021-06-05 06:40:18,541 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 [2021-06-05 06:40:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:18,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:18,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:18,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861004860] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:18,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:18,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:40:18,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841683123] [2021-06-05 06:40:18,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:18,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:18,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:18,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:18,629 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) [2021-06-05 06:40:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:19,143 INFO L93 Difference]: Finished difference Result 5555 states and 17807 transitions. [2021-06-05 06:40:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:40:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:19,150 INFO L225 Difference]: With dead ends: 5555 [2021-06-05 06:40:19,150 INFO L226 Difference]: Without dead ends: 5508 [2021-06-05 06:40:19,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 307.3ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:40:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-05 06:40:19,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3028. [2021-06-05 06:40:19,195 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) [2021-06-05 06:40:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 10746 transitions. [2021-06-05 06:40:19,200 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 10746 transitions. Word has length 28 [2021-06-05 06:40:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:19,200 INFO L482 AbstractCegarLoop]: Abstraction has 3028 states and 10746 transitions. [2021-06-05 06:40:19,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 10746 transitions. [2021-06-05 06:40:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:19,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:19,204 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:19,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3970,133 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:19,404 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:19,404 INFO L82 PathProgramCache]: Analyzing trace with hash 359577472, now seen corresponding path program 68 times [2021-06-05 06:40:19,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:19,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864466252] [2021-06-05 06:40:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:19,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:19,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864466252] [2021-06-05 06:40:19,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864466252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:19,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020179781] [2021-06-05 06:40:19,427 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 [2021-06-05 06:40:19,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:19,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:19,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:40:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:19,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020179781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:19,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:19,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 06:40:19,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283970707] [2021-06-05 06:40:19,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:40:19,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:19,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:40:19,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:40:19,506 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) [2021-06-05 06:40:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:19,655 INFO L93 Difference]: Finished difference Result 4339 states and 14289 transitions. [2021-06-05 06:40:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:40:19,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:19,661 INFO L225 Difference]: With dead ends: 4339 [2021-06-05 06:40:19,661 INFO L226 Difference]: Without dead ends: 4339 [2021-06-05 06:40:19,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:40:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-06-05 06:40:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 2863. [2021-06-05 06:40:19,695 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) [2021-06-05 06:40:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 10073 transitions. [2021-06-05 06:40:19,700 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 10073 transitions. Word has length 28 [2021-06-05 06:40:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:19,700 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 10073 transitions. [2021-06-05 06:40:19,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 10073 transitions. [2021-06-05 06:40:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:19,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:19,703 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:19,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3971,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:19,903 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:19,903 INFO L82 PathProgramCache]: Analyzing trace with hash -987104094, now seen corresponding path program 69 times [2021-06-05 06:40:19,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:19,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137857524] [2021-06-05 06:40:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:19,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:19,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137857524] [2021-06-05 06:40:19,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137857524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:19,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295108458] [2021-06-05 06:40:19,969 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 [2021-06-05 06:40:19,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:40:19,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:19,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:19,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:20,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295108458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:20,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:20,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:40:20,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999055448] [2021-06-05 06:40:20,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:20,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:20,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:20,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:20,064 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) [2021-06-05 06:40:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:20,704 INFO L93 Difference]: Finished difference Result 6209 states and 19661 transitions. [2021-06-05 06:40:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:40:20,705 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:20,712 INFO L225 Difference]: With dead ends: 6209 [2021-06-05 06:40:20,712 INFO L226 Difference]: Without dead ends: 6209 [2021-06-05 06:40:20,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 386.1ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:40:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6209 states. [2021-06-05 06:40:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6209 to 2881. [2021-06-05 06:40:20,759 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) [2021-06-05 06:40:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 10136 transitions. [2021-06-05 06:40:20,763 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 10136 transitions. Word has length 28 [2021-06-05 06:40:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:20,763 INFO L482 AbstractCegarLoop]: Abstraction has 2881 states and 10136 transitions. [2021-06-05 06:40:20,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 10136 transitions. [2021-06-05 06:40:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:20,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:20,767 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:20,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3972,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:20,967 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:20,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:20,967 INFO L82 PathProgramCache]: Analyzing trace with hash -202190000, now seen corresponding path program 70 times [2021-06-05 06:40:20,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:20,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386715676] [2021-06-05 06:40:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:20,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:21,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386715676] [2021-06-05 06:40:21,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386715676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:21,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686723919] [2021-06-05 06:40:21,000 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 [2021-06-05 06:40:21,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:21,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:21,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:21,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:21,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686723919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:21,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:21,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:40:21,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259985767] [2021-06-05 06:40:21,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:21,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:21,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:21,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:21,092 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) [2021-06-05 06:40:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:21,817 INFO L93 Difference]: Finished difference Result 6471 states and 20458 transitions. [2021-06-05 06:40:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:40:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:21,826 INFO L225 Difference]: With dead ends: 6471 [2021-06-05 06:40:21,826 INFO L226 Difference]: Without dead ends: 6471 [2021-06-05 06:40:21,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 405.7ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:40:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2021-06-05 06:40:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 2975. [2021-06-05 06:40:21,878 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) [2021-06-05 06:40:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 10443 transitions. [2021-06-05 06:40:21,883 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 10443 transitions. Word has length 28 [2021-06-05 06:40:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:21,883 INFO L482 AbstractCegarLoop]: Abstraction has 2975 states and 10443 transitions. [2021-06-05 06:40:21,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 10443 transitions. [2021-06-05 06:40:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:21,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:21,887 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:22,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3973,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:22,087 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1285212656, now seen corresponding path program 71 times [2021-06-05 06:40:22,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:22,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755454552] [2021-06-05 06:40:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:22,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:22,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755454552] [2021-06-05 06:40:22,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755454552] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:22,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960837390] [2021-06-05 06:40:22,118 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 [2021-06-05 06:40:22,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:40:22,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:22,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:22,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:22,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960837390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:22,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:22,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:40:22,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219003986] [2021-06-05 06:40:22,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:22,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:22,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:22,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:22,215 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) [2021-06-05 06:40:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:22,798 INFO L93 Difference]: Finished difference Result 6662 states and 21078 transitions. [2021-06-05 06:40:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:40:22,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:22,808 INFO L225 Difference]: With dead ends: 6662 [2021-06-05 06:40:22,808 INFO L226 Difference]: Without dead ends: 6626 [2021-06-05 06:40:22,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 341.6ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:40:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-06-05 06:40:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 3377. [2021-06-05 06:40:22,866 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) [2021-06-05 06:40:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 11948 transitions. [2021-06-05 06:40:22,872 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 11948 transitions. Word has length 28 [2021-06-05 06:40:22,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:22,872 INFO L482 AbstractCegarLoop]: Abstraction has 3377 states and 11948 transitions. [2021-06-05 06:40:22,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 11948 transitions. [2021-06-05 06:40:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:22,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:22,876 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:23,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3974,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:23,077 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:23,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:23,077 INFO L82 PathProgramCache]: Analyzing trace with hash 185865462, now seen corresponding path program 72 times [2021-06-05 06:40:23,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:23,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225975612] [2021-06-05 06:40:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:23,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:23,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225975612] [2021-06-05 06:40:23,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225975612] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:23,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994611847] [2021-06-05 06:40:23,108 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 [2021-06-05 06:40:23,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:40:23,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:23,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:23,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:23,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994611847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:23,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:23,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:40:23,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640590547] [2021-06-05 06:40:23,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:23,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:23,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:23,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:23,201 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) [2021-06-05 06:40:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:23,771 INFO L93 Difference]: Finished difference Result 6820 states and 21509 transitions. [2021-06-05 06:40:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:40:23,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:23,779 INFO L225 Difference]: With dead ends: 6820 [2021-06-05 06:40:23,779 INFO L226 Difference]: Without dead ends: 6820 [2021-06-05 06:40:23,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 353.2ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:40:23,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6820 states. [2021-06-05 06:40:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6820 to 3088. [2021-06-05 06:40:23,837 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) [2021-06-05 06:40:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 10800 transitions. [2021-06-05 06:40:23,842 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 10800 transitions. Word has length 28 [2021-06-05 06:40:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:23,842 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 10800 transitions. [2021-06-05 06:40:23,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 10800 transitions. [2021-06-05 06:40:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:23,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:23,846 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:24,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3975 [2021-06-05 06:40:24,047 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:24,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:24,047 INFO L82 PathProgramCache]: Analyzing trace with hash -247011142, now seen corresponding path program 73 times [2021-06-05 06:40:24,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:24,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326502156] [2021-06-05 06:40:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:24,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:24,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326502156] [2021-06-05 06:40:24,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326502156] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:24,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262665851] [2021-06-05 06:40:24,079 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 [2021-06-05 06:40:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:24,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:24,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:24,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262665851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:24,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:24,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:40:24,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923246470] [2021-06-05 06:40:24,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:24,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:24,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:24,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:24,167 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) [2021-06-05 06:40:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:24,793 INFO L93 Difference]: Finished difference Result 5973 states and 19224 transitions. [2021-06-05 06:40:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:40:24,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:24,818 INFO L225 Difference]: With dead ends: 5973 [2021-06-05 06:40:24,818 INFO L226 Difference]: Without dead ends: 5969 [2021-06-05 06:40:24,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 364.4ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:40:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2021-06-05 06:40:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 2848. [2021-06-05 06:40:24,859 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) [2021-06-05 06:40:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 10032 transitions. [2021-06-05 06:40:24,864 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 10032 transitions. Word has length 28 [2021-06-05 06:40:24,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:24,864 INFO L482 AbstractCegarLoop]: Abstraction has 2848 states and 10032 transitions. [2021-06-05 06:40:24,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:24,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 10032 transitions. [2021-06-05 06:40:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:24,867 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:24,867 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:25,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3976,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:25,068 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:25,068 INFO L82 PathProgramCache]: Analyzing trace with hash -519020332, now seen corresponding path program 74 times [2021-06-05 06:40:25,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:25,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825614708] [2021-06-05 06:40:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:25,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:25,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825614708] [2021-06-05 06:40:25,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825614708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:25,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437357093] [2021-06-05 06:40:25,100 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 [2021-06-05 06:40:25,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:25,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:25,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:25,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:25,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437357093] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:25,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:25,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:40:25,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647994755] [2021-06-05 06:40:25,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:25,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:25,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:25,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:25,210 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) [2021-06-05 06:40:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:26,169 INFO L93 Difference]: Finished difference Result 9218 states and 30019 transitions. [2021-06-05 06:40:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:40:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:26,183 INFO L225 Difference]: With dead ends: 9218 [2021-06-05 06:40:26,183 INFO L226 Difference]: Without dead ends: 9218 [2021-06-05 06:40:26,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 563.4ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:40:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2021-06-05 06:40:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 3024. [2021-06-05 06:40:26,270 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) [2021-06-05 06:40:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 10870 transitions. [2021-06-05 06:40:26,276 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 10870 transitions. Word has length 28 [2021-06-05 06:40:26,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:26,276 INFO L482 AbstractCegarLoop]: Abstraction has 3024 states and 10870 transitions. [2021-06-05 06:40:26,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 10870 transitions. [2021-06-05 06:40:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:26,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:26,279 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:26,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3977 [2021-06-05 06:40:26,480 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:26,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:26,480 INFO L82 PathProgramCache]: Analyzing trace with hash 47931748, now seen corresponding path program 75 times [2021-06-05 06:40:26,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:26,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967165118] [2021-06-05 06:40:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:26,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:26,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967165118] [2021-06-05 06:40:26,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967165118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:26,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326195136] [2021-06-05 06:40:26,512 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 [2021-06-05 06:40:26,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:40:26,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:26,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:26,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:26,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326195136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:26,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:26,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:40:26,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592502364] [2021-06-05 06:40:26,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:26,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:26,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:26,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:26,622 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) [2021-06-05 06:40:27,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:27,543 INFO L93 Difference]: Finished difference Result 9047 states and 29554 transitions. [2021-06-05 06:40:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:40:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:27,555 INFO L225 Difference]: With dead ends: 9047 [2021-06-05 06:40:27,555 INFO L226 Difference]: Without dead ends: 9047 [2021-06-05 06:40:27,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 549.2ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:40:27,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9047 states. [2021-06-05 06:40:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9047 to 2996. [2021-06-05 06:40:27,620 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) [2021-06-05 06:40:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 10721 transitions. [2021-06-05 06:40:27,625 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 10721 transitions. Word has length 28 [2021-06-05 06:40:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:27,625 INFO L482 AbstractCegarLoop]: Abstraction has 2996 states and 10721 transitions. [2021-06-05 06:40:27,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 10721 transitions. [2021-06-05 06:40:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:27,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:27,629 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:27,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3978,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:27,830 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:27,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1124414110, now seen corresponding path program 76 times [2021-06-05 06:40:27,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:27,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302613011] [2021-06-05 06:40:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:27,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:27,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302613011] [2021-06-05 06:40:27,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302613011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:27,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984362359] [2021-06-05 06:40:27,861 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 [2021-06-05 06:40:27,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:27,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:27,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:27,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:27,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984362359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:27,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:27,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:40:27,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306455287] [2021-06-05 06:40:27,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:27,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:27,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:27,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:27,962 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) [2021-06-05 06:40:28,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:28,839 INFO L93 Difference]: Finished difference Result 8494 states and 26829 transitions. [2021-06-05 06:40:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:40:28,839 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:28,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:28,850 INFO L225 Difference]: With dead ends: 8494 [2021-06-05 06:40:28,851 INFO L226 Difference]: Without dead ends: 8494 [2021-06-05 06:40:28,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 465.3ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:40:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8494 states. [2021-06-05 06:40:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8494 to 3016. [2021-06-05 06:40:28,926 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) [2021-06-05 06:40:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 10803 transitions. [2021-06-05 06:40:28,931 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 10803 transitions. Word has length 28 [2021-06-05 06:40:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:28,931 INFO L482 AbstractCegarLoop]: Abstraction has 3016 states and 10803 transitions. [2021-06-05 06:40:28,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 10803 transitions. [2021-06-05 06:40:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:28,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:28,934 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:29,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3979 [2021-06-05 06:40:29,135 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:29,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:29,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1043038022, now seen corresponding path program 77 times [2021-06-05 06:40:29,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:29,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710629525] [2021-06-05 06:40:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:29,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:29,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710629525] [2021-06-05 06:40:29,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710629525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:29,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944364916] [2021-06-05 06:40:29,168 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 [2021-06-05 06:40:29,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:40:29,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:29,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:29,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:29,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944364916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:29,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:29,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:40:29,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427956097] [2021-06-05 06:40:29,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:29,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:29,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:29,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:29,263 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) [2021-06-05 06:40:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:30,092 INFO L93 Difference]: Finished difference Result 8003 states and 25641 transitions. [2021-06-05 06:40:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:40:30,093 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:30,104 INFO L225 Difference]: With dead ends: 8003 [2021-06-05 06:40:30,104 INFO L226 Difference]: Without dead ends: 7995 [2021-06-05 06:40:30,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 441.7ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:40:30,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7995 states. [2021-06-05 06:40:30,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7995 to 2998. [2021-06-05 06:40:30,183 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) [2021-06-05 06:40:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 10726 transitions. [2021-06-05 06:40:30,188 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 10726 transitions. Word has length 28 [2021-06-05 06:40:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:30,188 INFO L482 AbstractCegarLoop]: Abstraction has 2998 states and 10726 transitions. [2021-06-05 06:40:30,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 10726 transitions. [2021-06-05 06:40:30,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:30,192 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:30,192 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:30,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3980 [2021-06-05 06:40:30,392 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:30,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:30,392 INFO L82 PathProgramCache]: Analyzing trace with hash -112380806, now seen corresponding path program 78 times [2021-06-05 06:40:30,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:30,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643984063] [2021-06-05 06:40:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:30,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:30,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643984063] [2021-06-05 06:40:30,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643984063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:30,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144616837] [2021-06-05 06:40:30,424 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 [2021-06-05 06:40:30,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:40:30,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:30,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:30,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:30,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144616837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:30,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:30,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:40:30,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945965828] [2021-06-05 06:40:30,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:30,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:30,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:30,533 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) [2021-06-05 06:40:31,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:31,421 INFO L93 Difference]: Finished difference Result 7921 states and 25395 transitions. [2021-06-05 06:40:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 06:40:31,421 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:31,432 INFO L225 Difference]: With dead ends: 7921 [2021-06-05 06:40:31,432 INFO L226 Difference]: Without dead ends: 7921 [2021-06-05 06:40:31,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 488.2ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:40:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2021-06-05 06:40:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 3014. [2021-06-05 06:40:31,494 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) [2021-06-05 06:40:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 10790 transitions. [2021-06-05 06:40:31,499 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 10790 transitions. Word has length 28 [2021-06-05 06:40:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:31,499 INFO L482 AbstractCegarLoop]: Abstraction has 3014 states and 10790 transitions. [2021-06-05 06:40:31,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 10790 transitions. [2021-06-05 06:40:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:31,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:31,518 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:31,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3981,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:31,721 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:31,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1530658348, now seen corresponding path program 79 times [2021-06-05 06:40:31,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:31,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379178502] [2021-06-05 06:40:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:31,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:31,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379178502] [2021-06-05 06:40:31,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379178502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:31,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237155246] [2021-06-05 06:40:31,752 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 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:31,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:31,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:31,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237155246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:31,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:31,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:40:31,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255871877] [2021-06-05 06:40:31,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:31,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:31,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:31,854 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) [2021-06-05 06:40:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:32,697 INFO L93 Difference]: Finished difference Result 7589 states and 24611 transitions. [2021-06-05 06:40:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:40:32,698 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:32,708 INFO L225 Difference]: With dead ends: 7589 [2021-06-05 06:40:32,708 INFO L226 Difference]: Without dead ends: 7581 [2021-06-05 06:40:32,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 469.8ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:40:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2021-06-05 06:40:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 2771. [2021-06-05 06:40:32,768 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) [2021-06-05 06:40:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 9688 transitions. [2021-06-05 06:40:32,774 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 9688 transitions. Word has length 28 [2021-06-05 06:40:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:32,774 INFO L482 AbstractCegarLoop]: Abstraction has 2771 states and 9688 transitions. [2021-06-05 06:40:32,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 9688 transitions. [2021-06-05 06:40:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:32,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:32,777 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:32,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3982 [2021-06-05 06:40:32,978 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:32,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:32,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1614061928, now seen corresponding path program 80 times [2021-06-05 06:40:32,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:32,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559469067] [2021-06-05 06:40:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:33,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:33,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559469067] [2021-06-05 06:40:33,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559469067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:33,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829673975] [2021-06-05 06:40:33,011 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 [2021-06-05 06:40:33,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:33,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:33,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:33,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829673975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:33,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:33,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:40:33,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700240256] [2021-06-05 06:40:33,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:40:33,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:33,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:40:33,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:40:33,121 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) [2021-06-05 06:40:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:33,972 INFO L93 Difference]: Finished difference Result 5790 states and 18502 transitions. [2021-06-05 06:40:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:40:33,972 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:33,980 INFO L225 Difference]: With dead ends: 5790 [2021-06-05 06:40:33,980 INFO L226 Difference]: Without dead ends: 5790 [2021-06-05 06:40:33,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 506.0ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:40:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2021-06-05 06:40:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 2783. [2021-06-05 06:40:34,024 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) [2021-06-05 06:40:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 9726 transitions. [2021-06-05 06:40:34,029 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 9726 transitions. Word has length 28 [2021-06-05 06:40:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:34,029 INFO L482 AbstractCegarLoop]: Abstraction has 2783 states and 9726 transitions. [2021-06-05 06:40:34,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 9726 transitions. [2021-06-05 06:40:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:34,032 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:34,032 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:34,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3983,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:34,232 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:34,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1027545192, now seen corresponding path program 81 times [2021-06-05 06:40:34,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:34,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673307975] [2021-06-05 06:40:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:34,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:34,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673307975] [2021-06-05 06:40:34,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673307975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:34,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328275720] [2021-06-05 06:40:34,266 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 [2021-06-05 06:40:34,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:40:34,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:34,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:34,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:34,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328275720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:34,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:34,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:40:34,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461559201] [2021-06-05 06:40:34,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:40:34,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:34,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:40:34,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:40:34,392 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) [2021-06-05 06:40:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:35,439 INFO L93 Difference]: Finished difference Result 6569 states and 20497 transitions. [2021-06-05 06:40:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:40:35,439 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:35,448 INFO L225 Difference]: With dead ends: 6569 [2021-06-05 06:40:35,448 INFO L226 Difference]: Without dead ends: 6569 [2021-06-05 06:40:35,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 635.3ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:40:35,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6569 states. [2021-06-05 06:40:35,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 2849. [2021-06-05 06:40:35,502 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) [2021-06-05 06:40:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 9943 transitions. [2021-06-05 06:40:35,507 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 9943 transitions. Word has length 28 [2021-06-05 06:40:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:35,507 INFO L482 AbstractCegarLoop]: Abstraction has 2849 states and 9943 transitions. [2021-06-05 06:40:35,507 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 06:40:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 9943 transitions. [2021-06-05 06:40:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:35,510 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:35,510 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:35,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3984,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:35,710 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:35,711 INFO L82 PathProgramCache]: Analyzing trace with hash 615493962, now seen corresponding path program 82 times [2021-06-05 06:40:35,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:35,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295983201] [2021-06-05 06:40:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:35,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:35,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295983201] [2021-06-05 06:40:35,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295983201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:35,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786489740] [2021-06-05 06:40:35,746 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 [2021-06-05 06:40:35,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:35,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:35,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:35,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786489740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:35,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:35,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:40:35,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904758011] [2021-06-05 06:40:35,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:40:35,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:35,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:40:35,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:40:35,861 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) [2021-06-05 06:40:36,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:36,777 INFO L93 Difference]: Finished difference Result 6132 states and 19351 transitions. [2021-06-05 06:40:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:40:36,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:36,785 INFO L225 Difference]: With dead ends: 6132 [2021-06-05 06:40:36,785 INFO L226 Difference]: Without dead ends: 6128 [2021-06-05 06:40:36,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 565.6ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:40:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2021-06-05 06:40:36,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 2775. [2021-06-05 06:40:36,846 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) [2021-06-05 06:40:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 9673 transitions. [2021-06-05 06:40:36,850 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 9673 transitions. Word has length 28 [2021-06-05 06:40:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:36,850 INFO L482 AbstractCegarLoop]: Abstraction has 2775 states and 9673 transitions. [2021-06-05 06:40:36,851 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 06:40:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 9673 transitions. [2021-06-05 06:40:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:36,853 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:36,854 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:37,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3985,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:37,054 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1194937186, now seen corresponding path program 66 times [2021-06-05 06:40:37,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:37,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636725698] [2021-06-05 06:40:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:37,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:37,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636725698] [2021-06-05 06:40:37,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636725698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:37,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665047550] [2021-06-05 06:40:37,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:37,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:40:37,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:37,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:37,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:37,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665047550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:37,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:37,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:40:37,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927711860] [2021-06-05 06:40:37,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:37,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:37,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:37,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:37,187 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) [2021-06-05 06:40:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:37,725 INFO L93 Difference]: Finished difference Result 5268 states and 16907 transitions. [2021-06-05 06:40:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:40:37,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:37,732 INFO L225 Difference]: With dead ends: 5268 [2021-06-05 06:40:37,732 INFO L226 Difference]: Without dead ends: 5268 [2021-06-05 06:40:37,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 305.4ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:40:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2021-06-05 06:40:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 2775. [2021-06-05 06:40:37,772 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) [2021-06-05 06:40:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 9679 transitions. [2021-06-05 06:40:37,776 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 9679 transitions. Word has length 28 [2021-06-05 06:40:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:37,777 INFO L482 AbstractCegarLoop]: Abstraction has 2775 states and 9679 transitions. [2021-06-05 06:40:37,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 9679 transitions. [2021-06-05 06:40:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:37,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:37,780 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:37,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3986,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:37,980 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash -416862576, now seen corresponding path program 67 times [2021-06-05 06:40:37,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:37,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899360908] [2021-06-05 06:40:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:38,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:38,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899360908] [2021-06-05 06:40:38,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899360908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:38,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879483279] [2021-06-05 06:40:38,018 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 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:38,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:38,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879483279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:38,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:38,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:40:38,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72135433] [2021-06-05 06:40:38,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:38,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:38,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:38,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:38,113 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) [2021-06-05 06:40:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:38,830 INFO L93 Difference]: Finished difference Result 5584 states and 17812 transitions. [2021-06-05 06:40:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:40:38,831 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:38,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:38,837 INFO L225 Difference]: With dead ends: 5584 [2021-06-05 06:40:38,837 INFO L226 Difference]: Without dead ends: 5584 [2021-06-05 06:40:38,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 406.1ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:40:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2021-06-05 06:40:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 2766. [2021-06-05 06:40:38,877 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) [2021-06-05 06:40:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 9648 transitions. [2021-06-05 06:40:38,882 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 9648 transitions. Word has length 28 [2021-06-05 06:40:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:38,882 INFO L482 AbstractCegarLoop]: Abstraction has 2766 states and 9648 transitions. [2021-06-05 06:40:38,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 9648 transitions. [2021-06-05 06:40:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:38,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:38,885 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:39,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3987 [2021-06-05 06:40:39,086 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:39,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash -648402224, now seen corresponding path program 68 times [2021-06-05 06:40:39,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:39,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533752139] [2021-06-05 06:40:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:39,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:39,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533752139] [2021-06-05 06:40:39,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533752139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:39,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504705047] [2021-06-05 06:40:39,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:39,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:39,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:39,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:39,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504705047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:39,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:39,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:40:39,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442357091] [2021-06-05 06:40:39,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:39,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:39,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:39,218 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) [2021-06-05 06:40:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:40,015 INFO L93 Difference]: Finished difference Result 6079 states and 19142 transitions. [2021-06-05 06:40:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:40:40,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:40,024 INFO L225 Difference]: With dead ends: 6079 [2021-06-05 06:40:40,024 INFO L226 Difference]: Without dead ends: 6079 [2021-06-05 06:40:40,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 462.3ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:40:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6079 states. [2021-06-05 06:40:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 2826. [2021-06-05 06:40:40,071 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) [2021-06-05 06:40:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 9846 transitions. [2021-06-05 06:40:40,076 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 9846 transitions. Word has length 28 [2021-06-05 06:40:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:40,076 INFO L482 AbstractCegarLoop]: Abstraction has 2826 states and 9846 transitions. [2021-06-05 06:40:40,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 9846 transitions. [2021-06-05 06:40:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:40,080 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:40,080 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:40,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3988,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:40,280 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:40,280 INFO L82 PathProgramCache]: Analyzing trace with hash -628686410, now seen corresponding path program 69 times [2021-06-05 06:40:40,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:40,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281083202] [2021-06-05 06:40:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:40,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:40,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281083202] [2021-06-05 06:40:40,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281083202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:40,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886847854] [2021-06-05 06:40:40,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:40,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:40:40,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:40,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:40,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:40,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886847854] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:40,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:40,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 06:40:40,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361441488] [2021-06-05 06:40:40,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:40:40,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:40:40,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:40:40,423 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) [2021-06-05 06:40:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:40,950 INFO L93 Difference]: Finished difference Result 6807 states and 22904 transitions. [2021-06-05 06:40:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:40:40,950 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:40,959 INFO L225 Difference]: With dead ends: 6807 [2021-06-05 06:40:40,959 INFO L226 Difference]: Without dead ends: 6807 [2021-06-05 06:40:40,960 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 351.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:40:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2021-06-05 06:40:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 4024. [2021-06-05 06:40:41,021 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) [2021-06-05 06:40:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 14527 transitions. [2021-06-05 06:40:41,028 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 14527 transitions. Word has length 28 [2021-06-05 06:40:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:41,028 INFO L482 AbstractCegarLoop]: Abstraction has 4024 states and 14527 transitions. [2021-06-05 06:40:41,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 14527 transitions. [2021-06-05 06:40:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:41,033 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:41,033 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:41,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3989 [2021-06-05 06:40:41,233 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:41,233 INFO L82 PathProgramCache]: Analyzing trace with hash -693223366, now seen corresponding path program 70 times [2021-06-05 06:40:41,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:41,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415088253] [2021-06-05 06:40:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:41,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:41,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415088253] [2021-06-05 06:40:41,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415088253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:41,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376053706] [2021-06-05 06:40:41,271 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 [2021-06-05 06:40:41,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:41,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:41,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:41,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:41,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376053706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:41,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:41,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:40:41,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134953519] [2021-06-05 06:40:41,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:41,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:41,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:41,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:41,358 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) [2021-06-05 06:40:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:42,085 INFO L93 Difference]: Finished difference Result 7353 states and 24861 transitions. [2021-06-05 06:40:42,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:40:42,086 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:42,096 INFO L225 Difference]: With dead ends: 7353 [2021-06-05 06:40:42,096 INFO L226 Difference]: Without dead ends: 7349 [2021-06-05 06:40:42,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 419.9ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:40:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7349 states. [2021-06-05 06:40:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7349 to 3916. [2021-06-05 06:40:42,175 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) [2021-06-05 06:40:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 14175 transitions. [2021-06-05 06:40:42,182 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 14175 transitions. Word has length 28 [2021-06-05 06:40:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:42,182 INFO L482 AbstractCegarLoop]: Abstraction has 3916 states and 14175 transitions. [2021-06-05 06:40:42,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 14175 transitions. [2021-06-05 06:40:42,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:42,186 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:42,186 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:42,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3990 [2021-06-05 06:40:42,387 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1327034102, now seen corresponding path program 83 times [2021-06-05 06:40:42,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:42,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125481484] [2021-06-05 06:40:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:42,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:42,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125481484] [2021-06-05 06:40:42,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125481484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:42,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557097187] [2021-06-05 06:40:42,413 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 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:42,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:40:42,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:42,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:42,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:42,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557097187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:42,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:42,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:40:42,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441331934] [2021-06-05 06:40:42,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:42,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:42,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:42,515 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) [2021-06-05 06:40:43,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:43,294 INFO L93 Difference]: Finished difference Result 8141 states and 27286 transitions. [2021-06-05 06:40:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:40:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:43,306 INFO L225 Difference]: With dead ends: 8141 [2021-06-05 06:40:43,306 INFO L226 Difference]: Without dead ends: 8132 [2021-06-05 06:40:43,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 439.7ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:40:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2021-06-05 06:40:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 4360. [2021-06-05 06:40:43,378 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) [2021-06-05 06:40:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 16180 transitions. [2021-06-05 06:40:43,386 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 16180 transitions. Word has length 28 [2021-06-05 06:40:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:43,386 INFO L482 AbstractCegarLoop]: Abstraction has 4360 states and 16180 transitions. [2021-06-05 06:40:43,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 16180 transitions. [2021-06-05 06:40:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:43,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:43,391 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:43,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3991 [2021-06-05 06:40:43,591 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:43,591 INFO L82 PathProgramCache]: Analyzing trace with hash -926591794, now seen corresponding path program 84 times [2021-06-05 06:40:43,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:43,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160573777] [2021-06-05 06:40:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:43,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:43,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160573777] [2021-06-05 06:40:43,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160573777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:43,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185441660] [2021-06-05 06:40:43,618 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 [2021-06-05 06:40:43,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:40:43,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:43,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:43,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:43,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185441660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:43,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:43,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:40:43,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191228035] [2021-06-05 06:40:43,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:43,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:43,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:43,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:43,720 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) [2021-06-05 06:40:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:44,498 INFO L93 Difference]: Finished difference Result 8418 states and 28143 transitions. [2021-06-05 06:40:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:40:44,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:44,511 INFO L225 Difference]: With dead ends: 8418 [2021-06-05 06:40:44,511 INFO L226 Difference]: Without dead ends: 8418 [2021-06-05 06:40:44,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 455.8ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:40:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2021-06-05 06:40:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 4380. [2021-06-05 06:40:44,588 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) [2021-06-05 06:40:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 16198 transitions. [2021-06-05 06:40:44,596 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 16198 transitions. Word has length 28 [2021-06-05 06:40:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:44,596 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 16198 transitions. [2021-06-05 06:40:44,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 16198 transitions. [2021-06-05 06:40:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:44,601 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:44,601 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:44,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3992,155 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:44,802 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:44,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2129998084, now seen corresponding path program 85 times [2021-06-05 06:40:44,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:44,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591402983] [2021-06-05 06:40:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:44,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:44,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591402983] [2021-06-05 06:40:44,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591402983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:44,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990100915] [2021-06-05 06:40:44,832 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 [2021-06-05 06:40:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:44,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:44,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:44,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990100915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:44,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:44,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:40:44,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90702759] [2021-06-05 06:40:44,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:40:44,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:40:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:40:44,911 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) [2021-06-05 06:40:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:45,315 INFO L93 Difference]: Finished difference Result 7845 states and 27662 transitions. [2021-06-05 06:40:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:40:45,315 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:45,327 INFO L225 Difference]: With dead ends: 7845 [2021-06-05 06:40:45,327 INFO L226 Difference]: Without dead ends: 7762 [2021-06-05 06:40:45,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 213.3ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:40:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-06-05 06:40:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 5838. [2021-06-05 06:40:45,426 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) [2021-06-05 06:40:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 21963 transitions. [2021-06-05 06:40:45,438 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 21963 transitions. Word has length 28 [2021-06-05 06:40:45,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:45,438 INFO L482 AbstractCegarLoop]: Abstraction has 5838 states and 21963 transitions. [2021-06-05 06:40:45,438 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 06:40:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 21963 transitions. [2021-06-05 06:40:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:45,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:45,445 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:45,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3993,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:45,645 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash -921983104, now seen corresponding path program 86 times [2021-06-05 06:40:45,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:45,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114447961] [2021-06-05 06:40:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:45,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:45,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114447961] [2021-06-05 06:40:45,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114447961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:45,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897104591] [2021-06-05 06:40:45,671 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 [2021-06-05 06:40:45,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:45,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:45,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:40:45,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:45,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897104591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:45,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:45,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:40:45,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556896465] [2021-06-05 06:40:45,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:40:45,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:40:45,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:40:45,744 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) [2021-06-05 06:40:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:45,910 INFO L93 Difference]: Finished difference Result 8103 states and 28515 transitions. [2021-06-05 06:40:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:40:45,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:45,922 INFO L225 Difference]: With dead ends: 8103 [2021-06-05 06:40:45,922 INFO L226 Difference]: Without dead ends: 8103 [2021-06-05 06:40:45,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2021-06-05 06:40:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 5980. [2021-06-05 06:40:46,003 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) [2021-06-05 06:40:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 22359 transitions. [2021-06-05 06:40:46,015 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 22359 transitions. Word has length 28 [2021-06-05 06:40:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:46,015 INFO L482 AbstractCegarLoop]: Abstraction has 5980 states and 22359 transitions. [2021-06-05 06:40:46,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 22359 transitions. [2021-06-05 06:40:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:46,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:46,023 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:46,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3994,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:46,223 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 8216640, now seen corresponding path program 87 times [2021-06-05 06:40:46,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:46,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4551422] [2021-06-05 06:40:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:46,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:46,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4551422] [2021-06-05 06:40:46,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4551422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:46,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209924635] [2021-06-05 06:40:46,262 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 [2021-06-05 06:40:46,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:40:46,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:46,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:46,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:46,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209924635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:46,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:46,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:40:46,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689149868] [2021-06-05 06:40:46,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:46,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:46,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:46,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:46,347 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) [2021-06-05 06:40:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:47,050 INFO L93 Difference]: Finished difference Result 12480 states and 43435 transitions. [2021-06-05 06:40:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:40:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:47,068 INFO L225 Difference]: With dead ends: 12480 [2021-06-05 06:40:47,068 INFO L226 Difference]: Without dead ends: 12480 [2021-06-05 06:40:47,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 401.4ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:40:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2021-06-05 06:40:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 6653. [2021-06-05 06:40:47,179 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) [2021-06-05 06:40:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6653 states to 6653 states and 24969 transitions. [2021-06-05 06:40:47,193 INFO L78 Accepts]: Start accepts. Automaton has 6653 states and 24969 transitions. Word has length 28 [2021-06-05 06:40:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:47,194 INFO L482 AbstractCegarLoop]: Abstraction has 6653 states and 24969 transitions. [2021-06-05 06:40:47,194 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 06:40:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 6653 states and 24969 transitions. [2021-06-05 06:40:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:47,202 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:47,202 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:47,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3995,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:47,403 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:47,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:47,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1910896092, now seen corresponding path program 88 times [2021-06-05 06:40:47,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:47,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773463418] [2021-06-05 06:40:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:47,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:47,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773463418] [2021-06-05 06:40:47,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773463418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:47,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727913704] [2021-06-05 06:40:47,435 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 [2021-06-05 06:40:47,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:47,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:47,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:47,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:47,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727913704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:47,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:47,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:40:47,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130757204] [2021-06-05 06:40:47,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:40:47,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:47,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:40:47,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:40:47,517 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) [2021-06-05 06:40:48,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:48,133 INFO L93 Difference]: Finished difference Result 12633 states and 43998 transitions. [2021-06-05 06:40:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:40:48,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:48,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:48,154 INFO L225 Difference]: With dead ends: 12633 [2021-06-05 06:40:48,154 INFO L226 Difference]: Without dead ends: 12633 [2021-06-05 06:40:48,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 338.8ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:40:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12633 states. [2021-06-05 06:40:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12633 to 6881. [2021-06-05 06:40:48,328 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) [2021-06-05 06:40:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 25691 transitions. [2021-06-05 06:40:48,347 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 25691 transitions. Word has length 28 [2021-06-05 06:40:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:48,347 INFO L482 AbstractCegarLoop]: Abstraction has 6881 states and 25691 transitions. [2021-06-05 06:40:48,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 25691 transitions. [2021-06-05 06:40:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:48,357 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:48,357 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:48,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3996 [2021-06-05 06:40:48,558 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:48,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:48,558 INFO L82 PathProgramCache]: Analyzing trace with hash 827873436, now seen corresponding path program 89 times [2021-06-05 06:40:48,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:48,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370765299] [2021-06-05 06:40:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:48,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:48,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370765299] [2021-06-05 06:40:48,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370765299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:48,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23104547] [2021-06-05 06:40:48,587 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 [2021-06-05 06:40:48,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:40:48,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:48,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:48,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23104547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:48,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:48,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:40:48,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186980418] [2021-06-05 06:40:48,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:40:48,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:40:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:40:48,673 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) [2021-06-05 06:40:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:49,058 INFO L93 Difference]: Finished difference Result 9357 states and 33618 transitions. [2021-06-05 06:40:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:40:49,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:49,073 INFO L225 Difference]: With dead ends: 9357 [2021-06-05 06:40:49,073 INFO L226 Difference]: Without dead ends: 9327 [2021-06-05 06:40:49,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:40:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9327 states. [2021-06-05 06:40:49,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9327 to 7728. [2021-06-05 06:40:49,182 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) [2021-06-05 06:40:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 29057 transitions. [2021-06-05 06:40:49,198 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 29057 transitions. Word has length 28 [2021-06-05 06:40:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:49,198 INFO L482 AbstractCegarLoop]: Abstraction has 7728 states and 29057 transitions. [2021-06-05 06:40:49,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 29057 transitions. [2021-06-05 06:40:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:49,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:49,208 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:49,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3997,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:49,409 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1996015742, now seen corresponding path program 90 times [2021-06-05 06:40:49,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:49,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388250317] [2021-06-05 06:40:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:49,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:49,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388250317] [2021-06-05 06:40:49,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388250317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:49,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968712307] [2021-06-05 06:40:49,435 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 [2021-06-05 06:40:49,458 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:40:49,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:49,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:49,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968712307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:49,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:49,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:40:49,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127186969] [2021-06-05 06:40:49,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:40:49,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:49,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:40:49,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:40:49,516 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) [2021-06-05 06:40:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:49,853 INFO L93 Difference]: Finished difference Result 9961 states and 35609 transitions. [2021-06-05 06:40:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:40:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:49,868 INFO L225 Difference]: With dead ends: 9961 [2021-06-05 06:40:49,868 INFO L226 Difference]: Without dead ends: 9961 [2021-06-05 06:40:49,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 172.3ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:40:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9961 states. [2021-06-05 06:40:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9961 to 7768. [2021-06-05 06:40:50,007 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) [2021-06-05 06:40:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 29176 transitions. [2021-06-05 06:40:50,023 INFO L78 Accepts]: Start accepts. Automaton has 7768 states and 29176 transitions. Word has length 28 [2021-06-05 06:40:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:50,023 INFO L482 AbstractCegarLoop]: Abstraction has 7768 states and 29176 transitions. [2021-06-05 06:40:50,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7768 states and 29176 transitions. [2021-06-05 06:40:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:50,034 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:50,034 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:50,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3998 [2021-06-05 06:40:50,234 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1866074950, now seen corresponding path program 91 times [2021-06-05 06:40:50,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:50,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555530076] [2021-06-05 06:40:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:50,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:50,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555530076] [2021-06-05 06:40:50,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555530076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:50,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420414897] [2021-06-05 06:40:50,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:50,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:50,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:40:50,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420414897] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:50,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:50,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:40:50,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138234302] [2021-06-05 06:40:50,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:40:50,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:50,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:40:50,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:40:50,343 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) [2021-06-05 06:40:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:50,901 INFO L93 Difference]: Finished difference Result 13358 states and 47391 transitions. [2021-06-05 06:40:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:40:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:50,925 INFO L225 Difference]: With dead ends: 13358 [2021-06-05 06:40:50,925 INFO L226 Difference]: Without dead ends: 13354 [2021-06-05 06:40:50,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 299.4ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:40:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13354 states. [2021-06-05 06:40:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13354 to 7674. [2021-06-05 06:40:51,063 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) [2021-06-05 06:40:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 28853 transitions. [2021-06-05 06:40:51,079 INFO L78 Accepts]: Start accepts. Automaton has 7674 states and 28853 transitions. Word has length 28 [2021-06-05 06:40:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:51,079 INFO L482 AbstractCegarLoop]: Abstraction has 7674 states and 28853 transitions. [2021-06-05 06:40:51,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7674 states and 28853 transitions. [2021-06-05 06:40:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:51,088 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:51,088 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:51,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3999,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:51,293 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash 970254134, now seen corresponding path program 92 times [2021-06-05 06:40:51,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:51,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017025944] [2021-06-05 06:40:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:51,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:51,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017025944] [2021-06-05 06:40:51,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017025944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:51,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457238970] [2021-06-05 06:40:51,326 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 [2021-06-05 06:40:51,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:51,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:51,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:40:51,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:51,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457238970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:51,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:51,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:40:51,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801695286] [2021-06-05 06:40:51,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:40:51,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:51,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:40:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:40:51,407 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) [2021-06-05 06:40:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:51,826 INFO L93 Difference]: Finished difference Result 10180 states and 36418 transitions. [2021-06-05 06:40:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:40:51,826 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:51,841 INFO L225 Difference]: With dead ends: 10180 [2021-06-05 06:40:51,841 INFO L226 Difference]: Without dead ends: 10180 [2021-06-05 06:40:51,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 241.3ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:40:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10180 states. [2021-06-05 06:40:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10180 to 7620. [2021-06-05 06:40:51,951 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) [2021-06-05 06:40:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 28595 transitions. [2021-06-05 06:40:51,968 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 28595 transitions. Word has length 28 [2021-06-05 06:40:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:51,968 INFO L482 AbstractCegarLoop]: Abstraction has 7620 states and 28595 transitions. [2021-06-05 06:40:51,968 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 06:40:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 28595 transitions. [2021-06-05 06:40:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:51,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:51,978 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:52,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4000 [2021-06-05 06:40:52,179 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:52,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1831555688, now seen corresponding path program 93 times [2021-06-05 06:40:52,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:52,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080772809] [2021-06-05 06:40:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:52,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:52,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080772809] [2021-06-05 06:40:52,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080772809] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:52,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936614903] [2021-06-05 06:40:52,216 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 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:52,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:40:52,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:52,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:52,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:52,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936614903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:52,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:52,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:40:52,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209014610] [2021-06-05 06:40:52,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:40:52,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:52,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:40:52,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:40:52,293 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) [2021-06-05 06:40:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:52,913 INFO L93 Difference]: Finished difference Result 13241 states and 46888 transitions. [2021-06-05 06:40:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:40:52,914 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:52,935 INFO L225 Difference]: With dead ends: 13241 [2021-06-05 06:40:52,936 INFO L226 Difference]: Without dead ends: 13229 [2021-06-05 06:40:52,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 340.2ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:40:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2021-06-05 06:40:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 7620. [2021-06-05 06:40:53,069 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) [2021-06-05 06:40:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 28587 transitions. [2021-06-05 06:40:53,137 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 28587 transitions. Word has length 28 [2021-06-05 06:40:53,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:53,137 INFO L482 AbstractCegarLoop]: Abstraction has 7620 states and 28587 transitions. [2021-06-05 06:40:53,138 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 06:40:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 28587 transitions. [2021-06-05 06:40:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:53,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:53,147 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:53,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4001 [2021-06-05 06:40:53,347 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:53,348 INFO L82 PathProgramCache]: Analyzing trace with hash 695130692, now seen corresponding path program 94 times [2021-06-05 06:40:53,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:53,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201626920] [2021-06-05 06:40:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:53,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:53,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201626920] [2021-06-05 06:40:53,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201626920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:53,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215058949] [2021-06-05 06:40:53,385 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 [2021-06-05 06:40:53,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:53,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:53,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:53,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:53,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215058949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:53,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:53,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:40:53,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14427600] [2021-06-05 06:40:53,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:53,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:53,476 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) [2021-06-05 06:40:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:54,537 INFO L93 Difference]: Finished difference Result 20083 states and 70057 transitions. [2021-06-05 06:40:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 06:40:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:54,571 INFO L225 Difference]: With dead ends: 20083 [2021-06-05 06:40:54,571 INFO L226 Difference]: Without dead ends: 20083 [2021-06-05 06:40:54,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 652.8ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:40:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2021-06-05 06:40:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 10419. [2021-06-05 06:40:54,868 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) [2021-06-05 06:40:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10419 states to 10419 states and 39565 transitions. [2021-06-05 06:40:54,895 INFO L78 Accepts]: Start accepts. Automaton has 10419 states and 39565 transitions. Word has length 28 [2021-06-05 06:40:54,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:54,895 INFO L482 AbstractCegarLoop]: Abstraction has 10419 states and 39565 transitions. [2021-06-05 06:40:54,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 10419 states and 39565 transitions. [2021-06-05 06:40:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:54,911 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:54,911 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:55,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4002 [2021-06-05 06:40:55,111 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash 776506780, now seen corresponding path program 95 times [2021-06-05 06:40:55,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:55,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650395995] [2021-06-05 06:40:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:55,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:55,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650395995] [2021-06-05 06:40:55,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650395995] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:55,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184832936] [2021-06-05 06:40:55,153 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 [2021-06-05 06:40:55,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:40:55,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:55,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:55,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:55,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184832936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:55,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:55,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:40:55,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687986961] [2021-06-05 06:40:55,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:55,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:55,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:55,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:55,247 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) [2021-06-05 06:40:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:56,236 INFO L93 Difference]: Finished difference Result 19333 states and 68102 transitions. [2021-06-05 06:40:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:40:56,237 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:56,270 INFO L225 Difference]: With dead ends: 19333 [2021-06-05 06:40:56,270 INFO L226 Difference]: Without dead ends: 19321 [2021-06-05 06:40:56,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 572.7ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:40:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19321 states. [2021-06-05 06:40:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19321 to 10233. [2021-06-05 06:40:56,498 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) [2021-06-05 06:40:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10233 states to 10233 states and 38928 transitions. [2021-06-05 06:40:56,521 INFO L78 Accepts]: Start accepts. Automaton has 10233 states and 38928 transitions. Word has length 28 [2021-06-05 06:40:56,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:56,521 INFO L482 AbstractCegarLoop]: Abstraction has 10233 states and 38928 transitions. [2021-06-05 06:40:56,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 10233 states and 38928 transitions. [2021-06-05 06:40:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:56,598 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:56,598 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:56,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4003,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:56,800 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:56,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:56,800 INFO L82 PathProgramCache]: Analyzing trace with hash -738585192, now seen corresponding path program 96 times [2021-06-05 06:40:56,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:56,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079583001] [2021-06-05 06:40:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:56,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:56,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079583001] [2021-06-05 06:40:56,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079583001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:56,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409461619] [2021-06-05 06:40:56,838 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 [2021-06-05 06:40:56,862 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:40:56,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:56,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:56,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409461619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:56,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:56,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:40:56,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090359088] [2021-06-05 06:40:56,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:40:56,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:56,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:40:56,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:40:56,925 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) [2021-06-05 06:40:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:57,824 INFO L93 Difference]: Finished difference Result 19147 states and 67441 transitions. [2021-06-05 06:40:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:40:57,824 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 [2021-06-05 06:40:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:57,856 INFO L225 Difference]: With dead ends: 19147 [2021-06-05 06:40:57,856 INFO L226 Difference]: Without dead ends: 19111 [2021-06-05 06:40:57,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 527.2ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:40:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19111 states. [2021-06-05 06:40:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19111 to 10277. [2021-06-05 06:40:58,073 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) [2021-06-05 06:40:58,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 39076 transitions. [2021-06-05 06:40:58,096 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 39076 transitions. Word has length 28 [2021-06-05 06:40:58,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:58,096 INFO L482 AbstractCegarLoop]: Abstraction has 10277 states and 39076 transitions. [2021-06-05 06:40:58,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 39076 transitions. [2021-06-05 06:40:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:40:58,109 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:58,109 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:58,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4004,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:58,310 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:58,310 INFO L82 PathProgramCache]: Analyzing trace with hash 858541524, now seen corresponding path program 97 times [2021-06-05 06:40:58,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:58,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793506321] [2021-06-05 06:40:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:58,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:58,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793506321] [2021-06-05 06:40:58,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793506321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:58,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915369424] [2021-06-05 06:40:58,349 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 [2021-06-05 06:40:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:58,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:40:58,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:58,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915369424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:58,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:58,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:40:58,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127551994] [2021-06-05 06:40:58,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:40:58,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:40:58,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:40:58,477 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) [2021-06-05 06:40:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:59,826 INFO L93 Difference]: Finished difference Result 19074 states and 67295 transitions. [2021-06-05 06:40:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-05 06:40:59,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:40:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:59,858 INFO L225 Difference]: With dead ends: 19074 [2021-06-05 06:40:59,858 INFO L226 Difference]: Without dead ends: 19074 [2021-06-05 06:40:59,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 867.9ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:40:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19074 states. [2021-06-05 06:41:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19074 to 10473. [2021-06-05 06:41:00,075 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) [2021-06-05 06:41:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10473 states to 10473 states and 39726 transitions. [2021-06-05 06:41:00,098 INFO L78 Accepts]: Start accepts. Automaton has 10473 states and 39726 transitions. Word has length 28 [2021-06-05 06:41:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:00,098 INFO L482 AbstractCegarLoop]: Abstraction has 10473 states and 39726 transitions. [2021-06-05 06:41:00,098 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 06:41:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 10473 states and 39726 transitions. [2021-06-05 06:41:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:00,112 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:00,112 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:00,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4005,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:00,313 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:00,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1793386618, now seen corresponding path program 98 times [2021-06-05 06:41:00,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:00,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426763900] [2021-06-05 06:41:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:00,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:00,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426763900] [2021-06-05 06:41:00,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426763900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:00,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700345178] [2021-06-05 06:41:00,353 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 [2021-06-05 06:41:00,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:00,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:00,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:00,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:00,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700345178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:00,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:00,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:41:00,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936951997] [2021-06-05 06:41:00,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:00,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:00,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:00,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:00,473 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) [2021-06-05 06:41:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:01,696 INFO L93 Difference]: Finished difference Result 18684 states and 66217 transitions. [2021-06-05 06:41:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:41:01,696 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:01,728 INFO L225 Difference]: With dead ends: 18684 [2021-06-05 06:41:01,728 INFO L226 Difference]: Without dead ends: 18672 [2021-06-05 06:41:01,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 718.0ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:41:01,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18672 states. [2021-06-05 06:41:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18672 to 10355. [2021-06-05 06:41:01,936 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) [2021-06-05 06:41:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 39325 transitions. [2021-06-05 06:41:01,960 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 39325 transitions. Word has length 28 [2021-06-05 06:41:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:01,960 INFO L482 AbstractCegarLoop]: Abstraction has 10355 states and 39325 transitions. [2021-06-05 06:41:01,960 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 06:41:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 39325 transitions. [2021-06-05 06:41:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:01,974 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:01,974 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:02,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4006 [2021-06-05 06:41:02,175 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:02,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1234123500, now seen corresponding path program 99 times [2021-06-05 06:41:02,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:02,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743334853] [2021-06-05 06:41:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:02,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:02,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743334853] [2021-06-05 06:41:02,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743334853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:02,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136546028] [2021-06-05 06:41:02,213 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 [2021-06-05 06:41:02,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:41:02,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:02,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:02,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:02,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136546028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:02,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:02,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:41:02,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290741752] [2021-06-05 06:41:02,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:41:02,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:02,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:41:02,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:41:02,309 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) [2021-06-05 06:41:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:03,383 INFO L93 Difference]: Finished difference Result 17924 states and 64133 transitions. [2021-06-05 06:41:03,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:41:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:03,420 INFO L225 Difference]: With dead ends: 17924 [2021-06-05 06:41:03,420 INFO L226 Difference]: Without dead ends: 17888 [2021-06-05 06:41:03,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 619.2ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:41:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17888 states. [2021-06-05 06:41:03,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17888 to 10379. [2021-06-05 06:41:03,653 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) [2021-06-05 06:41:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 39405 transitions. [2021-06-05 06:41:03,677 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 39405 transitions. Word has length 28 [2021-06-05 06:41:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:03,677 INFO L482 AbstractCegarLoop]: Abstraction has 10379 states and 39405 transitions. [2021-06-05 06:41:03,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 39405 transitions. [2021-06-05 06:41:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:03,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:03,691 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:03,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4007,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:03,891 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:03,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1584729920, now seen corresponding path program 100 times [2021-06-05 06:41:03,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:03,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312820901] [2021-06-05 06:41:03,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:03,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:03,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312820901] [2021-06-05 06:41:03,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312820901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:03,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504378454] [2021-06-05 06:41:03,924 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 [2021-06-05 06:41:03,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:03,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:03,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:03,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:04,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504378454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:04,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:04,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:41:04,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393215099] [2021-06-05 06:41:04,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:04,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:04,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:04,043 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) [2021-06-05 06:41:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:05,273 INFO L93 Difference]: Finished difference Result 26041 states and 92685 transitions. [2021-06-05 06:41:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 06:41:05,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:05,382 INFO L225 Difference]: With dead ends: 26041 [2021-06-05 06:41:05,382 INFO L226 Difference]: Without dead ends: 26041 [2021-06-05 06:41:05,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 713.8ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 06:41:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26041 states. [2021-06-05 06:41:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26041 to 10669. [2021-06-05 06:41:05,625 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) [2021-06-05 06:41:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 40779 transitions. [2021-06-05 06:41:05,649 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 40779 transitions. Word has length 28 [2021-06-05 06:41:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:05,649 INFO L482 AbstractCegarLoop]: Abstraction has 10669 states and 40779 transitions. [2021-06-05 06:41:05,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 40779 transitions. [2021-06-05 06:41:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:05,663 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:05,663 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:05,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4008 [2021-06-05 06:41:05,864 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1017777840, now seen corresponding path program 101 times [2021-06-05 06:41:05,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:05,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224794059] [2021-06-05 06:41:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:05,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:05,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224794059] [2021-06-05 06:41:05,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224794059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:05,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278014687] [2021-06-05 06:41:05,897 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 [2021-06-05 06:41:05,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:41:05,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:05,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:05,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:06,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278014687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:06,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:06,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:41:06,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750241171] [2021-06-05 06:41:06,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:06,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:06,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:06,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:06,015 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) [2021-06-05 06:41:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:07,175 INFO L93 Difference]: Finished difference Result 25481 states and 91317 transitions. [2021-06-05 06:41:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 06:41:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:07,225 INFO L225 Difference]: With dead ends: 25481 [2021-06-05 06:41:07,225 INFO L226 Difference]: Without dead ends: 25481 [2021-06-05 06:41:07,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 701.9ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:41:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25481 states. [2021-06-05 06:41:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25481 to 10571. [2021-06-05 06:41:07,541 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) [2021-06-05 06:41:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 40269 transitions. [2021-06-05 06:41:07,565 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 40269 transitions. Word has length 28 [2021-06-05 06:41:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:07,565 INFO L482 AbstractCegarLoop]: Abstraction has 10571 states and 40269 transitions. [2021-06-05 06:41:07,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 40269 transitions. [2021-06-05 06:41:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:07,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:07,579 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:07,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4009,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:07,779 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1216329654, now seen corresponding path program 102 times [2021-06-05 06:41:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:07,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035236440] [2021-06-05 06:41:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:07,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:07,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035236440] [2021-06-05 06:41:07,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035236440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:07,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581317366] [2021-06-05 06:41:07,812 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 [2021-06-05 06:41:07,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:41:07,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:07,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:07,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:07,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581317366] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:07,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:07,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:41:07,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628857593] [2021-06-05 06:41:07,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:41:07,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:07,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:41:07,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:41:07,923 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) [2021-06-05 06:41:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:08,718 INFO L93 Difference]: Finished difference Result 20226 states and 72726 transitions. [2021-06-05 06:41:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:41:08,718 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:08,753 INFO L225 Difference]: With dead ends: 20226 [2021-06-05 06:41:08,753 INFO L226 Difference]: Without dead ends: 20226 [2021-06-05 06:41:08,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 434.0ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:41:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states. [2021-06-05 06:41:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 10580. [2021-06-05 06:41:08,962 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) [2021-06-05 06:41:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10580 states to 10580 states and 40292 transitions. [2021-06-05 06:41:08,987 INFO L78 Accepts]: Start accepts. Automaton has 10580 states and 40292 transitions. Word has length 28 [2021-06-05 06:41:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:08,988 INFO L482 AbstractCegarLoop]: Abstraction has 10580 states and 40292 transitions. [2021-06-05 06:41:08,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 10580 states and 40292 transitions. [2021-06-05 06:41:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:09,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:09,002 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:09,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4010 [2021-06-05 06:41:09,203 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:09,203 INFO L82 PathProgramCache]: Analyzing trace with hash 541607776, now seen corresponding path program 103 times [2021-06-05 06:41:09,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:09,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653987893] [2021-06-05 06:41:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:09,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:09,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653987893] [2021-06-05 06:41:09,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653987893] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:09,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598107146] [2021-06-05 06:41:09,236 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 [2021-06-05 06:41:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:09,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:09,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:09,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598107146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:09,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:09,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:41:09,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428013783] [2021-06-05 06:41:09,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:41:09,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:09,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:41:09,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:41:09,344 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) [2021-06-05 06:41:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:10,078 INFO L93 Difference]: Finished difference Result 18775 states and 68086 transitions. [2021-06-05 06:41:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:41:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:10,112 INFO L225 Difference]: With dead ends: 18775 [2021-06-05 06:41:10,112 INFO L226 Difference]: Without dead ends: 18775 [2021-06-05 06:41:10,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 418.5ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:41:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2021-06-05 06:41:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 10592. [2021-06-05 06:41:10,324 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) [2021-06-05 06:41:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 40330 transitions. [2021-06-05 06:41:10,348 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 40330 transitions. Word has length 28 [2021-06-05 06:41:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:10,348 INFO L482 AbstractCegarLoop]: Abstraction has 10592 states and 40330 transitions. [2021-06-05 06:41:10,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 40330 transitions. [2021-06-05 06:41:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:10,362 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:10,362 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:10,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4011 [2021-06-05 06:41:10,562 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:10,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2099999344, now seen corresponding path program 104 times [2021-06-05 06:41:10,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:10,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513626354] [2021-06-05 06:41:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:10,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:10,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513626354] [2021-06-05 06:41:10,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513626354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:10,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689238470] [2021-06-05 06:41:10,596 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 [2021-06-05 06:41:10,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:10,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:10,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:10,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:10,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689238470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:10,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:10,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:41:10,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111858705] [2021-06-05 06:41:10,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:10,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:10,715 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) [2021-06-05 06:41:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:11,725 INFO L93 Difference]: Finished difference Result 19382 states and 69829 transitions. [2021-06-05 06:41:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 06:41:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:11,759 INFO L225 Difference]: With dead ends: 19382 [2021-06-05 06:41:11,759 INFO L226 Difference]: Without dead ends: 19382 [2021-06-05 06:41:11,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 642.6ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 06:41:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19382 states. [2021-06-05 06:41:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19382 to 10700. [2021-06-05 06:41:12,015 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) [2021-06-05 06:41:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 40664 transitions. [2021-06-05 06:41:12,038 INFO L78 Accepts]: Start accepts. Automaton has 10700 states and 40664 transitions. Word has length 28 [2021-06-05 06:41:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:12,038 INFO L482 AbstractCegarLoop]: Abstraction has 10700 states and 40664 transitions. [2021-06-05 06:41:12,038 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 06:41:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 10700 states and 40664 transitions. [2021-06-05 06:41:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:12,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:12,052 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:12,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4012 [2021-06-05 06:41:12,252 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:12,253 INFO L82 PathProgramCache]: Analyzing trace with hash -456960190, now seen corresponding path program 105 times [2021-06-05 06:41:12,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:12,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694436799] [2021-06-05 06:41:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:12,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:12,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694436799] [2021-06-05 06:41:12,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694436799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:12,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213160367] [2021-06-05 06:41:12,285 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 [2021-06-05 06:41:12,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:41:12,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:12,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:12,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:12,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213160367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:12,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:12,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:41:12,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153450844] [2021-06-05 06:41:12,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:12,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:12,397 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) [2021-06-05 06:41:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:13,269 INFO L93 Difference]: Finished difference Result 18954 states and 68665 transitions. [2021-06-05 06:41:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:41:13,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:13,302 INFO L225 Difference]: With dead ends: 18954 [2021-06-05 06:41:13,302 INFO L226 Difference]: Without dead ends: 18950 [2021-06-05 06:41:13,303 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 537.8ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:41:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18950 states. [2021-06-05 06:41:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18950 to 10626. [2021-06-05 06:41:13,514 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) [2021-06-05 06:41:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10626 states to 10626 states and 40425 transitions. [2021-06-05 06:41:13,538 INFO L78 Accepts]: Start accepts. Automaton has 10626 states and 40425 transitions. Word has length 28 [2021-06-05 06:41:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:13,538 INFO L482 AbstractCegarLoop]: Abstraction has 10626 states and 40425 transitions. [2021-06-05 06:41:13,538 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 06:41:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 10626 states and 40425 transitions. [2021-06-05 06:41:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:13,552 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:13,552 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:13,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4013 [2021-06-05 06:41:13,752 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:13,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:13,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1748478926, now seen corresponding path program 106 times [2021-06-05 06:41:13,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:13,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863788840] [2021-06-05 06:41:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:13,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:13,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863788840] [2021-06-05 06:41:13,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863788840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:13,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170653334] [2021-06-05 06:41:13,791 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 [2021-06-05 06:41:13,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:13,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:13,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:13,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:13,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170653334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:13,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:13,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:41:13,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772489570] [2021-06-05 06:41:13,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:13,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:13,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:13,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:13,901 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) [2021-06-05 06:41:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:14,988 INFO L93 Difference]: Finished difference Result 18381 states and 66150 transitions. [2021-06-05 06:41:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:41:14,989 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:15,024 INFO L225 Difference]: With dead ends: 18381 [2021-06-05 06:41:15,025 INFO L226 Difference]: Without dead ends: 18381 [2021-06-05 06:41:15,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 689.5ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:41:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18381 states. [2021-06-05 06:41:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18381 to 10853. [2021-06-05 06:41:15,240 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) [2021-06-05 06:41:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10853 states to 10853 states and 41323 transitions. [2021-06-05 06:41:15,264 INFO L78 Accepts]: Start accepts. Automaton has 10853 states and 41323 transitions. Word has length 28 [2021-06-05 06:41:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:15,264 INFO L482 AbstractCegarLoop]: Abstraction has 10853 states and 41323 transitions. [2021-06-05 06:41:15,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 10853 states and 41323 transitions. [2021-06-05 06:41:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:15,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:15,279 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:15,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4014,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:15,479 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:15,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1366168690, now seen corresponding path program 107 times [2021-06-05 06:41:15,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:15,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483574671] [2021-06-05 06:41:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:15,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:15,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483574671] [2021-06-05 06:41:15,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483574671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:15,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801719034] [2021-06-05 06:41:15,517 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 [2021-06-05 06:41:15,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 06:41:15,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:15,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:15,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:15,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801719034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:15,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:15,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:41:15,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753145989] [2021-06-05 06:41:15,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:15,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:15,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:15,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:15,623 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) [2021-06-05 06:41:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:16,515 INFO L93 Difference]: Finished difference Result 18091 states and 65344 transitions. [2021-06-05 06:41:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:41:16,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:16,549 INFO L225 Difference]: With dead ends: 18091 [2021-06-05 06:41:16,549 INFO L226 Difference]: Without dead ends: 18079 [2021-06-05 06:41:16,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 531.1ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:41:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18079 states. [2021-06-05 06:41:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18079 to 10955. [2021-06-05 06:41:16,824 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) [2021-06-05 06:41:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 41646 transitions. [2021-06-05 06:41:16,849 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 41646 transitions. Word has length 28 [2021-06-05 06:41:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:16,849 INFO L482 AbstractCegarLoop]: Abstraction has 10955 states and 41646 transitions. [2021-06-05 06:41:16,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 41646 transitions. [2021-06-05 06:41:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:16,864 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:16,864 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:17,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4015,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:17,065 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1561241668, now seen corresponding path program 71 times [2021-06-05 06:41:17,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:17,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698581701] [2021-06-05 06:41:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:17,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:17,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698581701] [2021-06-05 06:41:17,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698581701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:17,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223926528] [2021-06-05 06:41:17,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:17,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:41:17,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:17,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:17,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:17,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223926528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:17,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:17,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:41:17,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891147875] [2021-06-05 06:41:17,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:41:17,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:41:17,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:41:17,186 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) [2021-06-05 06:41:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:17,597 INFO L93 Difference]: Finished difference Result 15599 states and 57718 transitions. [2021-06-05 06:41:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:41:17,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:17,625 INFO L225 Difference]: With dead ends: 15599 [2021-06-05 06:41:17,625 INFO L226 Difference]: Without dead ends: 15599 [2021-06-05 06:41:17,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 232.3ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:41:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15599 states. [2021-06-05 06:41:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15599 to 11027. [2021-06-05 06:41:17,805 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) [2021-06-05 06:41:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11027 states to 11027 states and 41868 transitions. [2021-06-05 06:41:17,830 INFO L78 Accepts]: Start accepts. Automaton has 11027 states and 41868 transitions. Word has length 28 [2021-06-05 06:41:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:17,830 INFO L482 AbstractCegarLoop]: Abstraction has 11027 states and 41868 transitions. [2021-06-05 06:41:17,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 11027 states and 41868 transitions. [2021-06-05 06:41:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:17,845 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:17,845 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:18,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4016,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:18,046 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:18,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:18,046 INFO L82 PathProgramCache]: Analyzing trace with hash 963219036, now seen corresponding path program 72 times [2021-06-05 06:41:18,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:18,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132391539] [2021-06-05 06:41:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:18,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:18,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132391539] [2021-06-05 06:41:18,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132391539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:18,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872101264] [2021-06-05 06:41:18,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:18,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:41:18,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:18,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:18,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:18,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872101264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:18,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:18,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:41:18,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383247491] [2021-06-05 06:41:18,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:41:18,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:18,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:41:18,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:41:18,161 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) [2021-06-05 06:41:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:18,658 INFO L93 Difference]: Finished difference Result 16567 states and 60532 transitions. [2021-06-05 06:41:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:41:18,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:18,688 INFO L225 Difference]: With dead ends: 16567 [2021-06-05 06:41:18,688 INFO L226 Difference]: Without dead ends: 16567 [2021-06-05 06:41:18,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 273.7ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:41:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16567 states. [2021-06-05 06:41:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16567 to 11355. [2021-06-05 06:41:18,895 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) [2021-06-05 06:41:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11355 states to 11355 states and 42910 transitions. [2021-06-05 06:41:18,921 INFO L78 Accepts]: Start accepts. Automaton has 11355 states and 42910 transitions. Word has length 28 [2021-06-05 06:41:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:18,921 INFO L482 AbstractCegarLoop]: Abstraction has 11355 states and 42910 transitions. [2021-06-05 06:41:18,921 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 06:41:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 11355 states and 42910 transitions. [2021-06-05 06:41:18,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:18,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:18,936 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:19,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4017,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:19,137 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash -119803620, now seen corresponding path program 73 times [2021-06-05 06:41:19,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:19,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618159803] [2021-06-05 06:41:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:19,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:19,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618159803] [2021-06-05 06:41:19,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618159803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:19,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648745835] [2021-06-05 06:41:19,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:19,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:19,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:19,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648745835] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:19,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:19,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 06:41:19,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355064498] [2021-06-05 06:41:19,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:19,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:19,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:19,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:19,278 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) [2021-06-05 06:41:19,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:19,772 INFO L93 Difference]: Finished difference Result 16375 states and 60421 transitions. [2021-06-05 06:41:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:41:19,772 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 [2021-06-05 06:41:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:19,800 INFO L225 Difference]: With dead ends: 16375 [2021-06-05 06:41:19,801 INFO L226 Difference]: Without dead ends: 16331 [2021-06-05 06:41:19,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 288.1ms TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:41:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2021-06-05 06:41:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 13242. [2021-06-05 06:41:20,007 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) [2021-06-05 06:41:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13242 states to 13242 states and 50577 transitions. [2021-06-05 06:41:20,037 INFO L78 Accepts]: Start accepts. Automaton has 13242 states and 50577 transitions. Word has length 28 [2021-06-05 06:41:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:20,037 INFO L482 AbstractCegarLoop]: Abstraction has 13242 states and 50577 transitions. [2021-06-05 06:41:20,037 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) [2021-06-05 06:41:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 13242 states and 50577 transitions. [2021-06-05 06:41:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:20,056 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:20,056 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:20,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4018,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:20,256 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash 918397894, now seen corresponding path program 74 times [2021-06-05 06:41:20,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:20,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445770074] [2021-06-05 06:41:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:20,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:20,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445770074] [2021-06-05 06:41:20,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445770074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:20,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983301238] [2021-06-05 06:41:20,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:20,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:20,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:20,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:20,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:20,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983301238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:20,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:20,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:41:20,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521792307] [2021-06-05 06:41:20,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:41:20,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:20,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:41:20,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:41:20,363 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) [2021-06-05 06:41:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:20,768 INFO L93 Difference]: Finished difference Result 18146 states and 67670 transitions. [2021-06-05 06:41:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:41:20,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:20,800 INFO L225 Difference]: With dead ends: 18146 [2021-06-05 06:41:20,801 INFO L226 Difference]: Without dead ends: 18138 [2021-06-05 06:41:20,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 210.1ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:41:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18138 states. [2021-06-05 06:41:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18138 to 13160. [2021-06-05 06:41:21,023 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) [2021-06-05 06:41:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13160 states to 13160 states and 50302 transitions. [2021-06-05 06:41:21,053 INFO L78 Accepts]: Start accepts. Automaton has 13160 states and 50302 transitions. Word has length 28 [2021-06-05 06:41:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:21,053 INFO L482 AbstractCegarLoop]: Abstraction has 13160 states and 50302 transitions. [2021-06-05 06:41:21,053 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 06:41:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 13160 states and 50302 transitions. [2021-06-05 06:41:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:21,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:21,072 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:21,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4019,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:21,272 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:21,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1515734552, now seen corresponding path program 75 times [2021-06-05 06:41:21,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:21,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291199268] [2021-06-05 06:41:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:21,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:21,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291199268] [2021-06-05 06:41:21,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291199268] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:21,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317564962] [2021-06-05 06:41:21,310 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 [2021-06-05 06:41:21,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:41:21,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:21,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:21,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:21,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317564962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:21,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:21,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:41:21,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257899765] [2021-06-05 06:41:21,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:41:21,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:21,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:41:21,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:41:21,387 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) [2021-06-05 06:41:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:21,800 INFO L93 Difference]: Finished difference Result 18024 states and 67311 transitions. [2021-06-05 06:41:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:41:21,800 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:21,886 INFO L225 Difference]: With dead ends: 18024 [2021-06-05 06:41:21,887 INFO L226 Difference]: Without dead ends: 18012 [2021-06-05 06:41:21,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 224.2ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:41:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18012 states. [2021-06-05 06:41:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18012 to 13126. [2021-06-05 06:41:22,084 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) [2021-06-05 06:41:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13126 states to 13126 states and 50199 transitions. [2021-06-05 06:41:22,113 INFO L78 Accepts]: Start accepts. Automaton has 13126 states and 50199 transitions. Word has length 28 [2021-06-05 06:41:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:22,113 INFO L482 AbstractCegarLoop]: Abstraction has 13126 states and 50199 transitions. [2021-06-05 06:41:22,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13126 states and 50199 transitions. [2021-06-05 06:41:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:22,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:22,132 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:22,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4020 [2021-06-05 06:41:22,332 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:22,333 INFO L82 PathProgramCache]: Analyzing trace with hash 860325080, now seen corresponding path program 76 times [2021-06-05 06:41:22,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:22,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986607768] [2021-06-05 06:41:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:22,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:22,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986607768] [2021-06-05 06:41:22,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986607768] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:22,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918921961] [2021-06-05 06:41:22,365 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 [2021-06-05 06:41:22,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:22,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:22,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:22,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:22,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918921961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:22,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:22,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:41:22,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265988732] [2021-06-05 06:41:22,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:41:22,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:41:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:41:22,476 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) [2021-06-05 06:41:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:23,353 INFO L93 Difference]: Finished difference Result 24612 states and 88773 transitions. [2021-06-05 06:41:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:41:23,353 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:23,399 INFO L225 Difference]: With dead ends: 24612 [2021-06-05 06:41:23,399 INFO L226 Difference]: Without dead ends: 24612 [2021-06-05 06:41:23,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 478.3ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:41:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24612 states. [2021-06-05 06:41:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24612 to 13108. [2021-06-05 06:41:23,661 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) [2021-06-05 06:41:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13108 states to 13108 states and 50116 transitions. [2021-06-05 06:41:23,691 INFO L78 Accepts]: Start accepts. Automaton has 13108 states and 50116 transitions. Word has length 28 [2021-06-05 06:41:23,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:23,691 INFO L482 AbstractCegarLoop]: Abstraction has 13108 states and 50116 transitions. [2021-06-05 06:41:23,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 13108 states and 50116 transitions. [2021-06-05 06:41:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:23,710 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:23,710 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:23,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4021 [2021-06-05 06:41:23,910 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:23,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:23,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1387096988, now seen corresponding path program 108 times [2021-06-05 06:41:23,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:23,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440202003] [2021-06-05 06:41:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:23,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:23,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440202003] [2021-06-05 06:41:23,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440202003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:23,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260836829] [2021-06-05 06:41:23,936 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 [2021-06-05 06:41:23,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:41:23,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:23,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:23,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:24,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260836829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:24,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:24,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:41:24,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893027038] [2021-06-05 06:41:24,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:41:24,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:24,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:41:24,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:41:24,041 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) [2021-06-05 06:41:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:24,706 INFO L93 Difference]: Finished difference Result 20270 states and 73737 transitions. [2021-06-05 06:41:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:41:24,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:24,742 INFO L225 Difference]: With dead ends: 20270 [2021-06-05 06:41:24,743 INFO L226 Difference]: Without dead ends: 20257 [2021-06-05 06:41:24,743 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 380.6ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:41:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20257 states. [2021-06-05 06:41:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20257 to 14410. [2021-06-05 06:41:25,010 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) [2021-06-05 06:41:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14410 states to 14410 states and 55886 transitions. [2021-06-05 06:41:25,046 INFO L78 Accepts]: Start accepts. Automaton has 14410 states and 55886 transitions. Word has length 28 [2021-06-05 06:41:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:25,046 INFO L482 AbstractCegarLoop]: Abstraction has 14410 states and 55886 transitions. [2021-06-05 06:41:25,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 14410 states and 55886 transitions. [2021-06-05 06:41:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:25,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:25,066 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:25,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4022 [2021-06-05 06:41:25,267 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2059509770, now seen corresponding path program 109 times [2021-06-05 06:41:25,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:25,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191167655] [2021-06-05 06:41:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:25,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:25,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191167655] [2021-06-05 06:41:25,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191167655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:25,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786779565] [2021-06-05 06:41:25,293 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 [2021-06-05 06:41:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:25,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:25,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:25,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786779565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:25,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:25,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:41:25,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205237595] [2021-06-05 06:41:25,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:41:25,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:25,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:41:25,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:41:25,394 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) [2021-06-05 06:41:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:26,069 INFO L93 Difference]: Finished difference Result 20362 states and 73979 transitions. [2021-06-05 06:41:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:41:26,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:26,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:26,106 INFO L225 Difference]: With dead ends: 20362 [2021-06-05 06:41:26,106 INFO L226 Difference]: Without dead ends: 20356 [2021-06-05 06:41:26,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 381.3ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:41:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20356 states. [2021-06-05 06:41:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20356 to 14386. [2021-06-05 06:41:26,377 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) [2021-06-05 06:41:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14386 states to 14386 states and 55780 transitions. [2021-06-05 06:41:26,412 INFO L78 Accepts]: Start accepts. Automaton has 14386 states and 55780 transitions. Word has length 28 [2021-06-05 06:41:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:26,412 INFO L482 AbstractCegarLoop]: Abstraction has 14386 states and 55780 transitions. [2021-06-05 06:41:26,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 14386 states and 55780 transitions. [2021-06-05 06:41:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:26,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:26,511 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:26,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4023 [2021-06-05 06:41:26,711 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:26,712 INFO L82 PathProgramCache]: Analyzing trace with hash 244170948, now seen corresponding path program 110 times [2021-06-05 06:41:26,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:26,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068040324] [2021-06-05 06:41:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:26,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:26,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068040324] [2021-06-05 06:41:26,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068040324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:26,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622859665] [2021-06-05 06:41:26,737 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 [2021-06-05 06:41:26,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:26,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:26,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:26,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:26,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622859665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:26,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:26,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:41:26,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066137548] [2021-06-05 06:41:26,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:41:26,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:26,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:41:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:41:26,830 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) [2021-06-05 06:41:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:27,443 INFO L93 Difference]: Finished difference Result 23158 states and 84169 transitions. [2021-06-05 06:41:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:41:27,443 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:27,484 INFO L225 Difference]: With dead ends: 23158 [2021-06-05 06:41:27,485 INFO L226 Difference]: Without dead ends: 23145 [2021-06-05 06:41:27,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 301.8ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:41:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23145 states. [2021-06-05 06:41:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23145 to 14458. [2021-06-05 06:41:27,763 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) [2021-06-05 06:41:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14458 states to 14458 states and 56130 transitions. [2021-06-05 06:41:27,797 INFO L78 Accepts]: Start accepts. Automaton has 14458 states and 56130 transitions. Word has length 28 [2021-06-05 06:41:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:27,797 INFO L482 AbstractCegarLoop]: Abstraction has 14458 states and 56130 transitions. [2021-06-05 06:41:27,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 14458 states and 56130 transitions. [2021-06-05 06:41:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:27,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:27,817 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:28,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 187 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4024 [2021-06-05 06:41:28,018 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:28,018 INFO L82 PathProgramCache]: Analyzing trace with hash -438573382, now seen corresponding path program 111 times [2021-06-05 06:41:28,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:28,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782778124] [2021-06-05 06:41:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:28,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:28,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782778124] [2021-06-05 06:41:28,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782778124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:28,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190147846] [2021-06-05 06:41:28,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:28,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:41:28,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:28,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:28,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:28,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190147846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:28,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:28,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:41:28,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042080268] [2021-06-05 06:41:28,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:41:28,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:28,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:41:28,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:41:28,139 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) [2021-06-05 06:41:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:28,771 INFO L93 Difference]: Finished difference Result 24792 states and 89366 transitions. [2021-06-05 06:41:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:41:28,772 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:28,818 INFO L225 Difference]: With dead ends: 24792 [2021-06-05 06:41:28,818 INFO L226 Difference]: Without dead ends: 24792 [2021-06-05 06:41:28,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 357.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:41:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24792 states. [2021-06-05 06:41:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24792 to 14502. [2021-06-05 06:41:29,167 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) [2021-06-05 06:41:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14502 states to 14502 states and 56255 transitions. [2021-06-05 06:41:29,200 INFO L78 Accepts]: Start accepts. Automaton has 14502 states and 56255 transitions. Word has length 28 [2021-06-05 06:41:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:29,200 INFO L482 AbstractCegarLoop]: Abstraction has 14502 states and 56255 transitions. [2021-06-05 06:41:29,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 14502 states and 56255 transitions. [2021-06-05 06:41:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:29,221 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:29,221 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:29,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4025,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:29,421 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash -362417666, now seen corresponding path program 77 times [2021-06-05 06:41:29,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:29,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074348599] [2021-06-05 06:41:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:29,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:29,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074348599] [2021-06-05 06:41:29,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074348599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:29,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329911535] [2021-06-05 06:41:29,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:29,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 06:41:29,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:29,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:29,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:29,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329911535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:29,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:29,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:41:29,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10837587] [2021-06-05 06:41:29,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:41:29,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:29,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:41:29,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:41:29,546 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) [2021-06-05 06:41:30,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:30,417 INFO L93 Difference]: Finished difference Result 24486 states and 90901 transitions. [2021-06-05 06:41:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:41:30,418 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:30,462 INFO L225 Difference]: With dead ends: 24486 [2021-06-05 06:41:30,462 INFO L226 Difference]: Without dead ends: 24482 [2021-06-05 06:41:30,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 485.5ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:41:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24482 states. [2021-06-05 06:41:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24482 to 14756. [2021-06-05 06:41:30,764 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) [2021-06-05 06:41:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14756 states to 14756 states and 57098 transitions. [2021-06-05 06:41:30,798 INFO L78 Accepts]: Start accepts. Automaton has 14756 states and 57098 transitions. Word has length 28 [2021-06-05 06:41:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:30,798 INFO L482 AbstractCegarLoop]: Abstraction has 14756 states and 57098 transitions. [2021-06-05 06:41:30,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 14756 states and 57098 transitions. [2021-06-05 06:41:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:30,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:30,818 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:31,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4026,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:31,025 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash 502966272, now seen corresponding path program 112 times [2021-06-05 06:41:31,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:31,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992524308] [2021-06-05 06:41:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:31,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:31,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992524308] [2021-06-05 06:41:31,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992524308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:31,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97465283] [2021-06-05 06:41:31,055 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 [2021-06-05 06:41:31,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:31,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:31,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:31,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:31,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97465283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:31,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:31,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:41:31,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530098205] [2021-06-05 06:41:31,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:41:31,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:31,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:41:31,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:41:31,141 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) [2021-06-05 06:41:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:31,840 INFO L93 Difference]: Finished difference Result 21631 states and 80082 transitions. [2021-06-05 06:41:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:41:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:31,883 INFO L225 Difference]: With dead ends: 21631 [2021-06-05 06:41:31,883 INFO L226 Difference]: Without dead ends: 21608 [2021-06-05 06:41:31,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 366.3ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:41:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21608 states. [2021-06-05 06:41:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21608 to 15111. [2021-06-05 06:41:32,198 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) [2021-06-05 06:41:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15111 states to 15111 states and 58758 transitions. [2021-06-05 06:41:32,234 INFO L78 Accepts]: Start accepts. Automaton has 15111 states and 58758 transitions. Word has length 28 [2021-06-05 06:41:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:32,235 INFO L482 AbstractCegarLoop]: Abstraction has 15111 states and 58758 transitions. [2021-06-05 06:41:32,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 15111 states and 58758 transitions. [2021-06-05 06:41:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:32,255 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:32,255 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:32,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4027 [2021-06-05 06:41:32,457 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:32,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:32,457 INFO L82 PathProgramCache]: Analyzing trace with hash -179778058, now seen corresponding path program 113 times [2021-06-05 06:41:32,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:32,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585792679] [2021-06-05 06:41:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:32,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:32,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585792679] [2021-06-05 06:41:32,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585792679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:32,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274098884] [2021-06-05 06:41:32,486 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 [2021-06-05 06:41:32,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:41:32,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:32,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:32,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274098884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:32,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:32,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:41:32,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895674831] [2021-06-05 06:41:32,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:41:32,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:32,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:41:32,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:41:32,579 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) [2021-06-05 06:41:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:33,247 INFO L93 Difference]: Finished difference Result 21728 states and 79303 transitions. [2021-06-05 06:41:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:41:33,248 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:33,287 INFO L225 Difference]: With dead ends: 21728 [2021-06-05 06:41:33,287 INFO L226 Difference]: Without dead ends: 21728 [2021-06-05 06:41:33,288 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 384.2ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:41:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21728 states. [2021-06-05 06:41:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21728 to 15230. [2021-06-05 06:41:33,568 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) [2021-06-05 06:41:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15230 states to 15230 states and 59100 transitions. [2021-06-05 06:41:33,604 INFO L78 Accepts]: Start accepts. Automaton has 15230 states and 59100 transitions. Word has length 28 [2021-06-05 06:41:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:33,604 INFO L482 AbstractCegarLoop]: Abstraction has 15230 states and 59100 transitions. [2021-06-05 06:41:33,604 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 06:41:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 15230 states and 59100 transitions. [2021-06-05 06:41:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:33,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:33,624 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:33,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4028,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:33,825 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:33,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:33,825 INFO L82 PathProgramCache]: Analyzing trace with hash -499896522, now seen corresponding path program 114 times [2021-06-05 06:41:33,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:33,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109032266] [2021-06-05 06:41:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:33,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:33,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109032266] [2021-06-05 06:41:33,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109032266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:33,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33971073] [2021-06-05 06:41:33,855 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 [2021-06-05 06:41:33,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:41:33,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:33,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:33,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:33,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33971073] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:33,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:33,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:41:33,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132692257] [2021-06-05 06:41:33,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:41:33,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:41:33,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:41:33,946 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) [2021-06-05 06:41:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:34,616 INFO L93 Difference]: Finished difference Result 24246 states and 88914 transitions. [2021-06-05 06:41:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:41:34,617 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:34,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:34,661 INFO L225 Difference]: With dead ends: 24246 [2021-06-05 06:41:34,662 INFO L226 Difference]: Without dead ends: 24246 [2021-06-05 06:41:34,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 335.0ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:41:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24246 states. [2021-06-05 06:41:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24246 to 16389. [2021-06-05 06:41:34,947 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) [2021-06-05 06:41:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16389 states to 16389 states and 63299 transitions. [2021-06-05 06:41:34,985 INFO L78 Accepts]: Start accepts. Automaton has 16389 states and 63299 transitions. Word has length 28 [2021-06-05 06:41:34,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:34,985 INFO L482 AbstractCegarLoop]: Abstraction has 16389 states and 63299 transitions. [2021-06-05 06:41:34,985 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 06:41:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 16389 states and 63299 transitions. [2021-06-05 06:41:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:35,008 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:35,008 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:35,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4029,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:35,208 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash 389506442, now seen corresponding path program 115 times [2021-06-05 06:41:35,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:35,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511882829] [2021-06-05 06:41:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:35,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:35,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511882829] [2021-06-05 06:41:35,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511882829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:35,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739359589] [2021-06-05 06:41:35,239 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 [2021-06-05 06:41:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:35,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:35,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:35,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739359589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:35,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:35,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:41:35,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661788116] [2021-06-05 06:41:35,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:41:35,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:35,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:41:35,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:41:35,334 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) [2021-06-05 06:41:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:36,126 INFO L93 Difference]: Finished difference Result 27385 states and 99086 transitions. [2021-06-05 06:41:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:41:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:36,179 INFO L225 Difference]: With dead ends: 27385 [2021-06-05 06:41:36,179 INFO L226 Difference]: Without dead ends: 27385 [2021-06-05 06:41:36,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 441.8ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:41:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27385 states. [2021-06-05 06:41:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27385 to 16619. [2021-06-05 06:41:36,482 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) [2021-06-05 06:41:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16619 states to 16619 states and 64437 transitions. [2021-06-05 06:41:36,520 INFO L78 Accepts]: Start accepts. Automaton has 16619 states and 64437 transitions. Word has length 28 [2021-06-05 06:41:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:36,520 INFO L482 AbstractCegarLoop]: Abstraction has 16619 states and 64437 transitions. [2021-06-05 06:41:36,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 16619 states and 64437 transitions. [2021-06-05 06:41:36,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:36,542 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:36,542 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:36,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4030 [2021-06-05 06:41:36,743 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:36,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:36,743 INFO L82 PathProgramCache]: Analyzing trace with hash -933026596, now seen corresponding path program 78 times [2021-06-05 06:41:36,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:36,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568904832] [2021-06-05 06:41:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:36,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:36,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568904832] [2021-06-05 06:41:36,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568904832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:36,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738184986] [2021-06-05 06:41:36,778 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 [2021-06-05 06:41:36,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:41:36,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:36,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:36,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:36,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738184986] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:36,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:36,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:41:36,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158503866] [2021-06-05 06:41:36,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:36,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:36,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:36,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:36,897 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) [2021-06-05 06:41:38,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:38,355 INFO L93 Difference]: Finished difference Result 42879 states and 155463 transitions. [2021-06-05 06:41:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:41:38,355 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:38,448 INFO L225 Difference]: With dead ends: 42879 [2021-06-05 06:41:38,448 INFO L226 Difference]: Without dead ends: 42879 [2021-06-05 06:41:38,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 829.4ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:41:38,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42879 states. [2021-06-05 06:41:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42879 to 17863. [2021-06-05 06:41:38,971 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) [2021-06-05 06:41:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17863 states to 17863 states and 69939 transitions. [2021-06-05 06:41:39,016 INFO L78 Accepts]: Start accepts. Automaton has 17863 states and 69939 transitions. Word has length 28 [2021-06-05 06:41:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:39,016 INFO L482 AbstractCegarLoop]: Abstraction has 17863 states and 69939 transitions. [2021-06-05 06:41:39,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 17863 states and 69939 transitions. [2021-06-05 06:41:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:39,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:39,040 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:39,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4031,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:39,241 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:39,241 INFO L82 PathProgramCache]: Analyzing trace with hash -366074516, now seen corresponding path program 79 times [2021-06-05 06:41:39,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:39,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911652040] [2021-06-05 06:41:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:39,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:39,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911652040] [2021-06-05 06:41:39,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911652040] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:39,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356770253] [2021-06-05 06:41:39,273 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 [2021-06-05 06:41:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:39,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:39,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:39,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356770253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:39,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:39,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:41:39,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391881438] [2021-06-05 06:41:39,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:39,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:39,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:39,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:39,392 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) [2021-06-05 06:41:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:40,797 INFO L93 Difference]: Finished difference Result 41907 states and 152905 transitions. [2021-06-05 06:41:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:41:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:40,882 INFO L225 Difference]: With dead ends: 41907 [2021-06-05 06:41:40,882 INFO L226 Difference]: Without dead ends: 41907 [2021-06-05 06:41:40,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 895.6ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:41:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41907 states. [2021-06-05 06:41:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41907 to 17837. [2021-06-05 06:41:41,384 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) [2021-06-05 06:41:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17837 states to 17837 states and 69783 transitions. [2021-06-05 06:41:41,428 INFO L78 Accepts]: Start accepts. Automaton has 17837 states and 69783 transitions. Word has length 28 [2021-06-05 06:41:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:41,428 INFO L482 AbstractCegarLoop]: Abstraction has 17837 states and 69783 transitions. [2021-06-05 06:41:41,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 17837 states and 69783 transitions. [2021-06-05 06:41:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:41,452 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:41,452 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:41,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4032 [2021-06-05 06:41:41,652 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:41,652 INFO L82 PathProgramCache]: Analyzing trace with hash -648300864, now seen corresponding path program 116 times [2021-06-05 06:41:41,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:41,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67622886] [2021-06-05 06:41:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:41,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:41,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67622886] [2021-06-05 06:41:41,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67622886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:41,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683488701] [2021-06-05 06:41:41,694 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 [2021-06-05 06:41:41,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:41,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:41,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:41,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:41,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683488701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:41,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:41,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:41:41,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341692026] [2021-06-05 06:41:41,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:41:41,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:41,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:41:41,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:41:41,768 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) [2021-06-05 06:41:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:42,044 INFO L93 Difference]: Finished difference Result 28682 states and 110964 transitions. [2021-06-05 06:41:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:41:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:42,104 INFO L225 Difference]: With dead ends: 28682 [2021-06-05 06:41:42,104 INFO L226 Difference]: Without dead ends: 28632 [2021-06-05 06:41:42,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:41:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28632 states. [2021-06-05 06:41:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28632 to 23563. [2021-06-05 06:41:42,477 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) [2021-06-05 06:41:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23563 states to 23563 states and 92436 transitions. [2021-06-05 06:41:42,690 INFO L78 Accepts]: Start accepts. Automaton has 23563 states and 92436 transitions. Word has length 28 [2021-06-05 06:41:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:42,690 INFO L482 AbstractCegarLoop]: Abstraction has 23563 states and 92436 transitions. [2021-06-05 06:41:42,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 23563 states and 92436 transitions. [2021-06-05 06:41:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:42,728 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:42,728 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:42,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4033 [2021-06-05 06:41:42,929 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:42,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1261765878, now seen corresponding path program 117 times [2021-06-05 06:41:42,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:42,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904531354] [2021-06-05 06:41:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:43,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:43,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904531354] [2021-06-05 06:41:43,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904531354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:43,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450580707] [2021-06-05 06:41:43,074 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 [2021-06-05 06:41:43,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:41:43,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:43,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:41:43,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:43,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450580707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:43,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:43,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:41:43,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295222448] [2021-06-05 06:41:43,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:41:43,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:43,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:41:43,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:41:43,149 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) [2021-06-05 06:41:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:43,386 INFO L93 Difference]: Finished difference Result 26308 states and 100773 transitions. [2021-06-05 06:41:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:41:43,386 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 [2021-06-05 06:41:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:43,442 INFO L225 Difference]: With dead ends: 26308 [2021-06-05 06:41:43,442 INFO L226 Difference]: Without dead ends: 26308 [2021-06-05 06:41:43,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:41:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26308 states. [2021-06-05 06:41:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26308 to 23066. [2021-06-05 06:41:43,804 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) [2021-06-05 06:41:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23066 states to 23066 states and 90264 transitions. [2021-06-05 06:41:43,863 INFO L78 Accepts]: Start accepts. Automaton has 23066 states and 90264 transitions. Word has length 28 [2021-06-05 06:41:43,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:43,863 INFO L482 AbstractCegarLoop]: Abstraction has 23066 states and 90264 transitions. [2021-06-05 06:41:43,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23066 states and 90264 transitions. [2021-06-05 06:41:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:43,895 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:43,895 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:44,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4034 [2021-06-05 06:41:44,095 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:44,095 INFO L82 PathProgramCache]: Analyzing trace with hash 310084440, now seen corresponding path program 118 times [2021-06-05 06:41:44,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:44,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695473240] [2021-06-05 06:41:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:44,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:44,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695473240] [2021-06-05 06:41:44,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695473240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:44,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280758445] [2021-06-05 06:41:44,131 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 [2021-06-05 06:41:44,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:44,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:44,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:44,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:44,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280758445] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:44,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:44,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:41:44,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649848792] [2021-06-05 06:41:44,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:41:44,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:44,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:41:44,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:41:44,248 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) [2021-06-05 06:41:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:45,072 INFO L93 Difference]: Finished difference Result 35513 states and 132496 transitions. [2021-06-05 06:41:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:41:45,072 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:45,146 INFO L225 Difference]: With dead ends: 35513 [2021-06-05 06:41:45,146 INFO L226 Difference]: Without dead ends: 35513 [2021-06-05 06:41:45,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 454.8ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:41:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35513 states. [2021-06-05 06:41:45,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35513 to 23134. [2021-06-05 06:41:45,736 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) [2021-06-05 06:41:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23134 states to 23134 states and 90487 transitions. [2021-06-05 06:41:45,944 INFO L78 Accepts]: Start accepts. Automaton has 23134 states and 90487 transitions. Word has length 28 [2021-06-05 06:41:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:45,944 INFO L482 AbstractCegarLoop]: Abstraction has 23134 states and 90487 transitions. [2021-06-05 06:41:45,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 23134 states and 90487 transitions. [2021-06-05 06:41:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:45,977 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:45,977 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:46,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4035 [2021-06-05 06:41:46,178 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:46,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:46,178 INFO L82 PathProgramCache]: Analyzing trace with hash -666234404, now seen corresponding path program 119 times [2021-06-05 06:41:46,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:46,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025962533] [2021-06-05 06:41:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:46,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:46,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025962533] [2021-06-05 06:41:46,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025962533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:46,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269763276] [2021-06-05 06:41:46,217 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 [2021-06-05 06:41:46,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:41:46,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:46,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:46,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:46,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269763276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:46,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:46,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:41:46,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928348012] [2021-06-05 06:41:46,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:46,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:46,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:46,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:46,339 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) [2021-06-05 06:41:47,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:47,970 INFO L93 Difference]: Finished difference Result 45671 states and 168413 transitions. [2021-06-05 06:41:47,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:41:47,970 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:48,065 INFO L225 Difference]: With dead ends: 45671 [2021-06-05 06:41:48,065 INFO L226 Difference]: Without dead ends: 45671 [2021-06-05 06:41:48,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 900.2ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 06:41:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45671 states. [2021-06-05 06:41:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45671 to 23135. [2021-06-05 06:41:48,638 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) [2021-06-05 06:41:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23135 states to 23135 states and 90534 transitions. [2021-06-05 06:41:48,695 INFO L78 Accepts]: Start accepts. Automaton has 23135 states and 90534 transitions. Word has length 28 [2021-06-05 06:41:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:48,695 INFO L482 AbstractCegarLoop]: Abstraction has 23135 states and 90534 transitions. [2021-06-05 06:41:48,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 23135 states and 90534 transitions. [2021-06-05 06:41:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:48,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:48,832 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:49,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4036,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:49,048 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:49,048 INFO L82 PathProgramCache]: Analyzing trace with hash -99282324, now seen corresponding path program 120 times [2021-06-05 06:41:49,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:49,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807961674] [2021-06-05 06:41:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:49,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:49,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807961674] [2021-06-05 06:41:49,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807961674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:49,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307190350] [2021-06-05 06:41:49,086 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 [2021-06-05 06:41:49,112 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:41:49,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:49,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:49,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:49,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307190350] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:49,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:49,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:41:49,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263900443] [2021-06-05 06:41:49,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:49,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:49,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:49,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:49,208 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) [2021-06-05 06:41:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:50,715 INFO L93 Difference]: Finished difference Result 45296 states and 167759 transitions. [2021-06-05 06:41:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:41:50,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:50,803 INFO L225 Difference]: With dead ends: 45296 [2021-06-05 06:41:50,803 INFO L226 Difference]: Without dead ends: 45296 [2021-06-05 06:41:50,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 843.4ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 06:41:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45296 states. [2021-06-05 06:41:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45296 to 22919. [2021-06-05 06:41:51,369 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) [2021-06-05 06:41:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22919 states to 22919 states and 89532 transitions. [2021-06-05 06:41:51,426 INFO L78 Accepts]: Start accepts. Automaton has 22919 states and 89532 transitions. Word has length 28 [2021-06-05 06:41:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:51,426 INFO L482 AbstractCegarLoop]: Abstraction has 22919 states and 89532 transitions. [2021-06-05 06:41:51,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:51,426 INFO L276 IsEmpty]: Start isEmpty. Operand 22919 states and 89532 transitions. [2021-06-05 06:41:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:51,457 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:51,457 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:51,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4037,200 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:51,658 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:51,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:51,658 INFO L82 PathProgramCache]: Analyzing trace with hash 836856348, now seen corresponding path program 121 times [2021-06-05 06:41:51,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:51,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615104312] [2021-06-05 06:41:51,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:51,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:51,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615104312] [2021-06-05 06:41:51,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615104312] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:51,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559563090] [2021-06-05 06:41:51,688 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 [2021-06-05 06:41:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:51,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:41:51,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:41:51,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559563090] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:51,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:51,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:41:51,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563569497] [2021-06-05 06:41:51,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:41:51,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:51,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:41:51,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:41:51,764 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) [2021-06-05 06:41:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:52,176 INFO L93 Difference]: Finished difference Result 35247 states and 132459 transitions. [2021-06-05 06:41:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:41:52,189 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:52,305 INFO L225 Difference]: With dead ends: 35247 [2021-06-05 06:41:52,305 INFO L226 Difference]: Without dead ends: 35230 [2021-06-05 06:41:52,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:41:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35230 states. [2021-06-05 06:41:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35230 to 23187. [2021-06-05 06:41:52,859 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) [2021-06-05 06:41:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23187 states to 23187 states and 90684 transitions. [2021-06-05 06:41:52,933 INFO L78 Accepts]: Start accepts. Automaton has 23187 states and 90684 transitions. Word has length 28 [2021-06-05 06:41:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:52,934 INFO L482 AbstractCegarLoop]: Abstraction has 23187 states and 90684 transitions. [2021-06-05 06:41:52,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:52,934 INFO L276 IsEmpty]: Start isEmpty. Operand 23187 states and 90684 transitions. [2021-06-05 06:41:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:52,968 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:52,968 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:53,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4038,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:53,168 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:53,169 INFO L82 PathProgramCache]: Analyzing trace with hash -306069692, now seen corresponding path program 122 times [2021-06-05 06:41:53,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:53,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902954999] [2021-06-05 06:41:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:53,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:53,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902954999] [2021-06-05 06:41:53,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902954999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:53,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326642803] [2021-06-05 06:41:53,198 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 [2021-06-05 06:41:53,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:53,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:53,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:41:53,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:53,368 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-05 06:41:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:41:53,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326642803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:53,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:53,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:41:53,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924672262] [2021-06-05 06:41:53,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:41:53,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:53,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:41:53,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:41:53,385 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) [2021-06-05 06:41:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:53,663 INFO L93 Difference]: Finished difference Result 37405 states and 139306 transitions. [2021-06-05 06:41:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:41:53,663 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:53,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:53,741 INFO L225 Difference]: With dead ends: 37405 [2021-06-05 06:41:53,742 INFO L226 Difference]: Without dead ends: 37405 [2021-06-05 06:41:53,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:41:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37405 states. [2021-06-05 06:41:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37405 to 22856. [2021-06-05 06:41:54,339 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) [2021-06-05 06:41:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22856 states to 22856 states and 89098 transitions. [2021-06-05 06:41:54,411 INFO L78 Accepts]: Start accepts. Automaton has 22856 states and 89098 transitions. Word has length 28 [2021-06-05 06:41:54,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:54,411 INFO L482 AbstractCegarLoop]: Abstraction has 22856 states and 89098 transitions. [2021-06-05 06:41:54,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:54,412 INFO L276 IsEmpty]: Start isEmpty. Operand 22856 states and 89098 transitions. [2021-06-05 06:41:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:54,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:54,447 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:54,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4039,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:54,648 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:54,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1652751258, now seen corresponding path program 123 times [2021-06-05 06:41:54,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:54,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885388330] [2021-06-05 06:41:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:54,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:54,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885388330] [2021-06-05 06:41:54,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885388330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:54,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779975346] [2021-06-05 06:41:54,687 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 [2021-06-05 06:41:54,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:41:54,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:54,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:54,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:54,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779975346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:54,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:54,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:41:54,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454900521] [2021-06-05 06:41:54,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:41:54,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:54,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:41:54,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:41:54,790 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) [2021-06-05 06:41:55,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:55,677 INFO L93 Difference]: Finished difference Result 32629 states and 122440 transitions. [2021-06-05 06:41:55,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:41:55,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:55,747 INFO L225 Difference]: With dead ends: 32629 [2021-06-05 06:41:55,747 INFO L226 Difference]: Without dead ends: 32629 [2021-06-05 06:41:55,747 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 413.5ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:41:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32629 states. [2021-06-05 06:41:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32629 to 22904. [2021-06-05 06:41:56,243 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) [2021-06-05 06:41:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22904 states to 22904 states and 89260 transitions. [2021-06-05 06:41:56,302 INFO L78 Accepts]: Start accepts. Automaton has 22904 states and 89260 transitions. Word has length 28 [2021-06-05 06:41:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:56,302 INFO L482 AbstractCegarLoop]: Abstraction has 22904 states and 89260 transitions. [2021-06-05 06:41:56,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22904 states and 89260 transitions. [2021-06-05 06:41:56,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:56,334 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:56,334 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:56,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4040,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:56,534 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -867837164, now seen corresponding path program 124 times [2021-06-05 06:41:56,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:56,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705325357] [2021-06-05 06:41:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:56,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:56,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705325357] [2021-06-05 06:41:56,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705325357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:56,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455968703] [2021-06-05 06:41:56,569 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 [2021-06-05 06:41:56,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:56,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:56,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:56,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:56,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455968703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:56,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:56,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:41:56,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574681999] [2021-06-05 06:41:56,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:41:56,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:56,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:41:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:41:56,662 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) [2021-06-05 06:41:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:57,705 INFO L93 Difference]: Finished difference Result 34174 states and 126879 transitions. [2021-06-05 06:41:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:41:57,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:57,777 INFO L225 Difference]: With dead ends: 34174 [2021-06-05 06:41:57,777 INFO L226 Difference]: Without dead ends: 34174 [2021-06-05 06:41:57,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 628.3ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:41:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34174 states. [2021-06-05 06:41:58,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34174 to 23462. [2021-06-05 06:41:58,363 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) [2021-06-05 06:41:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23462 states to 23462 states and 90987 transitions. [2021-06-05 06:41:58,435 INFO L78 Accepts]: Start accepts. Automaton has 23462 states and 90987 transitions. Word has length 28 [2021-06-05 06:41:58,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:58,435 INFO L482 AbstractCegarLoop]: Abstraction has 23462 states and 90987 transitions. [2021-06-05 06:41:58,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 23462 states and 90987 transitions. [2021-06-05 06:41:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:41:58,470 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:58,470 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:58,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4041 [2021-06-05 06:41:58,671 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:58,671 INFO L82 PathProgramCache]: Analyzing trace with hash -912658306, now seen corresponding path program 125 times [2021-06-05 06:41:58,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:58,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656790934] [2021-06-05 06:41:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:58,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:58,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656790934] [2021-06-05 06:41:58,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656790934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:58,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705339740] [2021-06-05 06:41:58,709 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 [2021-06-05 06:41:58,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:41:58,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:58,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:41:58,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:41:58,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705339740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:58,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:58,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:41:58,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509384370] [2021-06-05 06:41:58,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:41:58,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:58,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:41:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:41:58,808 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) [2021-06-05 06:41:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:59,848 INFO L93 Difference]: Finished difference Result 33276 states and 124519 transitions. [2021-06-05 06:41:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:41:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:41:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:59,914 INFO L225 Difference]: With dead ends: 33276 [2021-06-05 06:41:59,915 INFO L226 Difference]: Without dead ends: 33272 [2021-06-05 06:41:59,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 461.2ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:41:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33272 states. [2021-06-05 06:42:00,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33272 to 23354. [2021-06-05 06:42:00,415 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) [2021-06-05 06:42:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23354 states to 23354 states and 90625 transitions. [2021-06-05 06:42:00,469 INFO L78 Accepts]: Start accepts. Automaton has 23354 states and 90625 transitions. Word has length 28 [2021-06-05 06:42:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:00,469 INFO L482 AbstractCegarLoop]: Abstraction has 23354 states and 90625 transitions. [2021-06-05 06:42:00,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 23354 states and 90625 transitions. [2021-06-05 06:42:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:00,499 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:00,499 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:00,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4042,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:00,699 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:00,699 INFO L82 PathProgramCache]: Analyzing trace with hash -47274368, now seen corresponding path program 126 times [2021-06-05 06:42:00,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:00,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619233233] [2021-06-05 06:42:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:00,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:00,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619233233] [2021-06-05 06:42:00,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619233233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:00,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411689672] [2021-06-05 06:42:00,726 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 [2021-06-05 06:42:00,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:00,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:00,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:42:00,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 06:42:00,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411689672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:00,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:00,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:42:00,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213339651] [2021-06-05 06:42:00,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:42:00,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:00,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:42:00,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:42:00,801 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) [2021-06-05 06:42:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:01,027 INFO L93 Difference]: Finished difference Result 29681 states and 111114 transitions. [2021-06-05 06:42:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:42:01,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:01,089 INFO L225 Difference]: With dead ends: 29681 [2021-06-05 06:42:01,089 INFO L226 Difference]: Without dead ends: 29681 [2021-06-05 06:42:01,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:42:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29681 states. [2021-06-05 06:42:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29681 to 23664. [2021-06-05 06:42:01,595 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) [2021-06-05 06:42:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23664 states to 23664 states and 91638 transitions. [2021-06-05 06:42:01,652 INFO L78 Accepts]: Start accepts. Automaton has 23664 states and 91638 transitions. Word has length 28 [2021-06-05 06:42:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:01,652 INFO L482 AbstractCegarLoop]: Abstraction has 23664 states and 91638 transitions. [2021-06-05 06:42:01,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 23664 states and 91638 transitions. [2021-06-05 06:42:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:01,683 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:01,683 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:01,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4043 [2021-06-05 06:42:01,884 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:01,884 INFO L82 PathProgramCache]: Analyzing trace with hash 882925376, now seen corresponding path program 127 times [2021-06-05 06:42:01,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:01,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522348812] [2021-06-05 06:42:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:01,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:01,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522348812] [2021-06-05 06:42:01,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522348812] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:01,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427931755] [2021-06-05 06:42:01,919 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 [2021-06-05 06:42:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:01,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:01,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:42:02,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427931755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:02,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:02,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:42:02,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545813011] [2021-06-05 06:42:02,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:42:02,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:02,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:42:02,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:42:02,002 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) [2021-06-05 06:42:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:02,961 INFO L93 Difference]: Finished difference Result 34438 states and 127402 transitions. [2021-06-05 06:42:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:42:02,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:02,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:03,045 INFO L225 Difference]: With dead ends: 34438 [2021-06-05 06:42:03,045 INFO L226 Difference]: Without dead ends: 34438 [2021-06-05 06:42:03,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 430.9ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 06:42:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34438 states. [2021-06-05 06:42:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34438 to 25439. [2021-06-05 06:42:03,680 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) [2021-06-05 06:42:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25439 states to 25439 states and 98747 transitions. [2021-06-05 06:42:03,745 INFO L78 Accepts]: Start accepts. Automaton has 25439 states and 98747 transitions. Word has length 28 [2021-06-05 06:42:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:03,745 INFO L482 AbstractCegarLoop]: Abstraction has 25439 states and 98747 transitions. [2021-06-05 06:42:03,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 25439 states and 98747 transitions. [2021-06-05 06:42:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:03,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:03,780 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:03,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4044 [2021-06-05 06:42:03,981 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:03,981 INFO L82 PathProgramCache]: Analyzing trace with hash -956846952, now seen corresponding path program 128 times [2021-06-05 06:42:03,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:03,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7652863] [2021-06-05 06:42:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:04,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:04,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7652863] [2021-06-05 06:42:04,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7652863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:04,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482961712] [2021-06-05 06:42:04,016 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 [2021-06-05 06:42:04,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:04,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:04,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:04,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:42:04,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482961712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:04,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:04,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:42:04,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549294671] [2021-06-05 06:42:04,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:42:04,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:04,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:42:04,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:42:04,094 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) [2021-06-05 06:42:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:04,864 INFO L93 Difference]: Finished difference Result 32691 states and 122893 transitions. [2021-06-05 06:42:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:42:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:04,935 INFO L225 Difference]: With dead ends: 32691 [2021-06-05 06:42:04,936 INFO L226 Difference]: Without dead ends: 32679 [2021-06-05 06:42:04,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 342.5ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:42:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32679 states. [2021-06-05 06:42:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32679 to 25599. [2021-06-05 06:42:05,499 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) [2021-06-05 06:42:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25599 states to 25599 states and 99245 transitions. [2021-06-05 06:42:05,565 INFO L78 Accepts]: Start accepts. Automaton has 25599 states and 99245 transitions. Word has length 28 [2021-06-05 06:42:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:05,565 INFO L482 AbstractCegarLoop]: Abstraction has 25599 states and 99245 transitions. [2021-06-05 06:42:05,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 25599 states and 99245 transitions. [2021-06-05 06:42:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:05,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:05,599 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:05,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4045 [2021-06-05 06:42:05,800 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:05,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1587630268, now seen corresponding path program 129 times [2021-06-05 06:42:05,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:05,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300003765] [2021-06-05 06:42:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:05,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:05,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300003765] [2021-06-05 06:42:05,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300003765] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:05,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586815554] [2021-06-05 06:42:05,827 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 [2021-06-05 06:42:05,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:05,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:05,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:42:05,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:05,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586815554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:05,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:05,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:42:05,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792693047] [2021-06-05 06:42:05,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:42:05,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:05,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:42:05,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:42:05,899 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) [2021-06-05 06:42:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:06,148 INFO L93 Difference]: Finished difference Result 30159 states and 114821 transitions. [2021-06-05 06:42:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:42:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:06,213 INFO L225 Difference]: With dead ends: 30159 [2021-06-05 06:42:06,213 INFO L226 Difference]: Without dead ends: 30159 [2021-06-05 06:42:06,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:42:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30159 states. [2021-06-05 06:42:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30159 to 26806. [2021-06-05 06:42:06,833 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) [2021-06-05 06:42:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26806 states to 26806 states and 103821 transitions. [2021-06-05 06:42:06,915 INFO L78 Accepts]: Start accepts. Automaton has 26806 states and 103821 transitions. Word has length 28 [2021-06-05 06:42:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:06,915 INFO L482 AbstractCegarLoop]: Abstraction has 26806 states and 103821 transitions. [2021-06-05 06:42:06,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 26806 states and 103821 transitions. [2021-06-05 06:42:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:06,959 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:06,959 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:07,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4046 [2021-06-05 06:42:07,160 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:07,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1143968700, now seen corresponding path program 130 times [2021-06-05 06:42:07,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:07,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139858117] [2021-06-05 06:42:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:07,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:07,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139858117] [2021-06-05 06:42:07,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139858117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:07,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302740614] [2021-06-05 06:42:07,199 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 [2021-06-05 06:42:07,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:07,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:07,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:07,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:07,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302740614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:07,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:07,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:42:07,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889415783] [2021-06-05 06:42:07,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:42:07,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:42:07,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:42:07,292 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) [2021-06-05 06:42:07,854 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-06-05 06:42:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:08,222 INFO L93 Difference]: Finished difference Result 34754 states and 129602 transitions. [2021-06-05 06:42:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:42:08,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:08,298 INFO L225 Difference]: With dead ends: 34754 [2021-06-05 06:42:08,299 INFO L226 Difference]: Without dead ends: 34754 [2021-06-05 06:42:08,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 584.2ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:42:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34754 states. [2021-06-05 06:42:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34754 to 28000. [2021-06-05 06:42:08,924 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) [2021-06-05 06:42:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28000 states to 28000 states and 107638 transitions. [2021-06-05 06:42:08,998 INFO L78 Accepts]: Start accepts. Automaton has 28000 states and 107638 transitions. Word has length 28 [2021-06-05 06:42:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:08,998 INFO L482 AbstractCegarLoop]: Abstraction has 28000 states and 107638 transitions. [2021-06-05 06:42:08,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 28000 states and 107638 transitions. [2021-06-05 06:42:09,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:09,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:09,040 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:09,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4047,210 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:09,240 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:09,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:09,241 INFO L82 PathProgramCache]: Analyzing trace with hash -403875748, now seen corresponding path program 131 times [2021-06-05 06:42:09,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:09,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183417341] [2021-06-05 06:42:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:09,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:09,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183417341] [2021-06-05 06:42:09,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183417341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:09,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122424324] [2021-06-05 06:42:09,272 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 [2021-06-05 06:42:09,296 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:42:09,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:09,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:09,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:09,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122424324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:09,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:09,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:42:09,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464832782] [2021-06-05 06:42:09,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:42:09,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:09,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:42:09,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:42:09,350 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) [2021-06-05 06:42:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:10,052 INFO L93 Difference]: Finished difference Result 33849 states and 127203 transitions. [2021-06-05 06:42:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:42:10,052 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:10,124 INFO L225 Difference]: With dead ends: 33849 [2021-06-05 06:42:10,124 INFO L226 Difference]: Without dead ends: 33841 [2021-06-05 06:42:10,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 273.0ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:42:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33841 states. [2021-06-05 06:42:10,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33841 to 27806. [2021-06-05 06:42:10,743 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) [2021-06-05 06:42:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27806 states to 27806 states and 107057 transitions. [2021-06-05 06:42:10,828 INFO L78 Accepts]: Start accepts. Automaton has 27806 states and 107057 transitions. Word has length 28 [2021-06-05 06:42:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:10,828 INFO L482 AbstractCegarLoop]: Abstraction has 27806 states and 107057 transitions. [2021-06-05 06:42:10,828 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 06:42:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 27806 states and 107057 transitions. [2021-06-05 06:42:10,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:10,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:10,873 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:11,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4048,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:11,074 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:11,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:11,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1046121180, now seen corresponding path program 132 times [2021-06-05 06:42:11,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:11,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339300996] [2021-06-05 06:42:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:11,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:11,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339300996] [2021-06-05 06:42:11,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339300996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:11,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418404505] [2021-06-05 06:42:11,108 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 [2021-06-05 06:42:11,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:42:11,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:11,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:11,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:11,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418404505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:11,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:11,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:42:11,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380660982] [2021-06-05 06:42:11,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:42:11,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:11,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:42:11,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:42:11,197 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) [2021-06-05 06:42:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:11,967 INFO L93 Difference]: Finished difference Result 35673 states and 132779 transitions. [2021-06-05 06:42:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:42:11,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:12,047 INFO L225 Difference]: With dead ends: 35673 [2021-06-05 06:42:12,047 INFO L226 Difference]: Without dead ends: 35673 [2021-06-05 06:42:12,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 393.0ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:42:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35673 states. [2021-06-05 06:42:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35673 to 28844. [2021-06-05 06:42:12,715 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) [2021-06-05 06:42:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28844 states to 28844 states and 110400 transitions. [2021-06-05 06:42:12,787 INFO L78 Accepts]: Start accepts. Automaton has 28844 states and 110400 transitions. Word has length 28 [2021-06-05 06:42:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:12,787 INFO L482 AbstractCegarLoop]: Abstraction has 28844 states and 110400 transitions. [2021-06-05 06:42:12,787 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 06:42:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 28844 states and 110400 transitions. [2021-06-05 06:42:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:12,831 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:12,831 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:13,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4049,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:13,032 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:13,032 INFO L82 PathProgramCache]: Analyzing trace with hash -36901476, now seen corresponding path program 133 times [2021-06-05 06:42:13,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:13,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825356492] [2021-06-05 06:42:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:13,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:13,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825356492] [2021-06-05 06:42:13,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825356492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:13,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126783782] [2021-06-05 06:42:13,063 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 [2021-06-05 06:42:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:13,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:42:13,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:13,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126783782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:13,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:13,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:42:13,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605380023] [2021-06-05 06:42:13,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:42:13,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:13,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:42:13,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:42:13,314 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) [2021-06-05 06:42:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:13,710 INFO L93 Difference]: Finished difference Result 35179 states and 133683 transitions. [2021-06-05 06:42:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:13,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:13,786 INFO L225 Difference]: With dead ends: 35179 [2021-06-05 06:42:13,786 INFO L226 Difference]: Without dead ends: 35166 [2021-06-05 06:42:13,787 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:42:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35166 states. [2021-06-05 06:42:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35166 to 33639. [2021-06-05 06:42:14,419 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) [2021-06-05 06:42:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33639 states to 33639 states and 129264 transitions. [2021-06-05 06:42:14,505 INFO L78 Accepts]: Start accepts. Automaton has 33639 states and 129264 transitions. Word has length 28 [2021-06-05 06:42:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:14,505 INFO L482 AbstractCegarLoop]: Abstraction has 33639 states and 129264 transitions. [2021-06-05 06:42:14,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 33639 states and 129264 transitions. [2021-06-05 06:42:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:14,554 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:14,554 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:14,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4050,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:14,755 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:14,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1434176642, now seen corresponding path program 134 times [2021-06-05 06:42:14,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:14,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157477797] [2021-06-05 06:42:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:14,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:14,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157477797] [2021-06-05 06:42:14,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157477797] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:14,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208113365] [2021-06-05 06:42:14,791 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 [2021-06-05 06:42:14,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:14,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:14,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:42:14,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:14,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208113365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:14,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:14,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:42:14,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635547634] [2021-06-05 06:42:14,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:42:14,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:14,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:42:14,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:42:14,861 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) [2021-06-05 06:42:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:15,199 INFO L93 Difference]: Finished difference Result 36796 states and 139166 transitions. [2021-06-05 06:42:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:15,449 INFO L225 Difference]: With dead ends: 36796 [2021-06-05 06:42:15,449 INFO L226 Difference]: Without dead ends: 36796 [2021-06-05 06:42:15,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:42:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36796 states. [2021-06-05 06:42:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36796 to 33316. [2021-06-05 06:42:16,075 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) [2021-06-05 06:42:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33316 states to 33316 states and 127897 transitions. [2021-06-05 06:42:16,384 INFO L78 Accepts]: Start accepts. Automaton has 33316 states and 127897 transitions. Word has length 28 [2021-06-05 06:42:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:16,384 INFO L482 AbstractCegarLoop]: Abstraction has 33316 states and 127897 transitions. [2021-06-05 06:42:16,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 33316 states and 127897 transitions. [2021-06-05 06:42:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:16,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:16,448 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:16,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4051 [2021-06-05 06:42:16,648 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1001300038, now seen corresponding path program 135 times [2021-06-05 06:42:16,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:16,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450846951] [2021-06-05 06:42:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:16,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:16,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450846951] [2021-06-05 06:42:16,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450846951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:16,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355345929] [2021-06-05 06:42:16,678 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 [2021-06-05 06:42:16,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:42:16,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:16,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:16,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:16,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355345929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:16,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:16,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:42:16,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731875726] [2021-06-05 06:42:16,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:42:16,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:16,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:42:16,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:42:16,754 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) [2021-06-05 06:42:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:17,348 INFO L93 Difference]: Finished difference Result 39856 states and 149676 transitions. [2021-06-05 06:42:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:42:17,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:17,434 INFO L225 Difference]: With dead ends: 39856 [2021-06-05 06:42:17,435 INFO L226 Difference]: Without dead ends: 39848 [2021-06-05 06:42:17,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 251.6ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:42:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39848 states. [2021-06-05 06:42:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39848 to 33282. [2021-06-05 06:42:18,139 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) [2021-06-05 06:42:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33282 states to 33282 states and 127780 transitions. [2021-06-05 06:42:18,223 INFO L78 Accepts]: Start accepts. Automaton has 33282 states and 127780 transitions. Word has length 28 [2021-06-05 06:42:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:18,223 INFO L482 AbstractCegarLoop]: Abstraction has 33282 states and 127780 transitions. [2021-06-05 06:42:18,223 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 06:42:18,223 INFO L276 IsEmpty]: Start isEmpty. Operand 33282 states and 127780 transitions. [2021-06-05 06:42:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:18,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:18,271 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:18,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4052,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:18,471 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:18,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:18,472 INFO L82 PathProgramCache]: Analyzing trace with hash 105479222, now seen corresponding path program 136 times [2021-06-05 06:42:18,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:18,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406031496] [2021-06-05 06:42:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:18,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:18,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406031496] [2021-06-05 06:42:18,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406031496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:18,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525341733] [2021-06-05 06:42:18,503 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 [2021-06-05 06:42:18,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:18,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:18,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:42:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:18,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525341733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:18,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:18,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:42:18,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312287507] [2021-06-05 06:42:18,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:42:18,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:18,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:42:18,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:42:18,573 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) [2021-06-05 06:42:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:19,097 INFO L93 Difference]: Finished difference Result 36198 states and 137505 transitions. [2021-06-05 06:42:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:42:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:19,174 INFO L225 Difference]: With dead ends: 36198 [2021-06-05 06:42:19,174 INFO L226 Difference]: Without dead ends: 36198 [2021-06-05 06:42:19,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 172.1ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:42:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36198 states. [2021-06-05 06:42:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36198 to 33814. [2021-06-05 06:42:19,869 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) [2021-06-05 06:42:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33814 states to 33814 states and 129764 transitions. [2021-06-05 06:42:19,973 INFO L78 Accepts]: Start accepts. Automaton has 33814 states and 129764 transitions. Word has length 28 [2021-06-05 06:42:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:19,973 INFO L482 AbstractCegarLoop]: Abstraction has 33814 states and 129764 transitions. [2021-06-05 06:42:19,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 33814 states and 129764 transitions. [2021-06-05 06:42:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:20,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:20,027 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:20,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4053 [2021-06-05 06:42:20,227 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1598636696, now seen corresponding path program 137 times [2021-06-05 06:42:20,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:20,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387754563] [2021-06-05 06:42:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:20,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:20,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387754563] [2021-06-05 06:42:20,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387754563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:20,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881056715] [2021-06-05 06:42:20,261 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 [2021-06-05 06:42:20,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:42:20,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:20,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:20,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:20,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881056715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:20,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:20,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:42:20,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236448579] [2021-06-05 06:42:20,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:42:20,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:20,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:42:20,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:42:20,344 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) [2021-06-05 06:42:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:20,991 INFO L93 Difference]: Finished difference Result 40833 states and 153241 transitions. [2021-06-05 06:42:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:42:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:21,086 INFO L225 Difference]: With dead ends: 40833 [2021-06-05 06:42:21,087 INFO L226 Difference]: Without dead ends: 40809 [2021-06-05 06:42:21,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 274.5ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:42:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40809 states. [2021-06-05 06:42:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40809 to 33986. [2021-06-05 06:42:21,865 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) [2021-06-05 06:42:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33986 states to 33986 states and 130298 transitions. [2021-06-05 06:42:21,951 INFO L78 Accepts]: Start accepts. Automaton has 33986 states and 130298 transitions. Word has length 28 [2021-06-05 06:42:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:21,951 INFO L482 AbstractCegarLoop]: Abstraction has 33986 states and 130298 transitions. [2021-06-05 06:42:21,951 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 06:42:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 33986 states and 130298 transitions. [2021-06-05 06:42:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:21,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:21,999 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:22,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4054 [2021-06-05 06:42:22,200 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:22,200 INFO L82 PathProgramCache]: Analyzing trace with hash -252372998, now seen corresponding path program 138 times [2021-06-05 06:42:22,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:22,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541577221] [2021-06-05 06:42:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:22,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:22,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541577221] [2021-06-05 06:42:22,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541577221] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:22,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378991903] [2021-06-05 06:42:22,236 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 [2021-06-05 06:42:22,260 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:22,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:22,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:42:22,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:22,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378991903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:22,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:22,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-05 06:42:22,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340096529] [2021-06-05 06:42:22,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:42:22,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:22,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:42:22,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:42:22,308 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) [2021-06-05 06:42:22,611 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2021-06-05 06:42:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:22,907 INFO L93 Difference]: Finished difference Result 36618 states and 138998 transitions. [2021-06-05 06:42:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:42:22,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:22,994 INFO L225 Difference]: With dead ends: 36618 [2021-06-05 06:42:22,995 INFO L226 Difference]: Without dead ends: 36618 [2021-06-05 06:42:22,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 349.9ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:42:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36618 states. [2021-06-05 06:42:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36618 to 33912. [2021-06-05 06:42:23,658 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) [2021-06-05 06:42:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33912 states to 33912 states and 130042 transitions. [2021-06-05 06:42:23,746 INFO L78 Accepts]: Start accepts. Automaton has 33912 states and 130042 transitions. Word has length 28 [2021-06-05 06:42:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:23,746 INFO L482 AbstractCegarLoop]: Abstraction has 33912 states and 130042 transitions. [2021-06-05 06:42:23,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:23,746 INFO L276 IsEmpty]: Start isEmpty. Operand 33912 states and 130042 transitions. [2021-06-05 06:42:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:23,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:23,794 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:23,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4055 [2021-06-05 06:42:23,994 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:23,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:23,995 INFO L82 PathProgramCache]: Analyzing trace with hash 606143132, now seen corresponding path program 139 times [2021-06-05 06:42:23,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:23,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662533850] [2021-06-05 06:42:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:24,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:24,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662533850] [2021-06-05 06:42:24,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662533850] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:24,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314025885] [2021-06-05 06:42:24,031 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 [2021-06-05 06:42:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:24,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:24,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:24,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314025885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:24,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:24,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:42:24,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856175765] [2021-06-05 06:42:24,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:42:24,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:24,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:42:24,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:42:24,107 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) [2021-06-05 06:42:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:24,730 INFO L93 Difference]: Finished difference Result 40756 states and 152982 transitions. [2021-06-05 06:42:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:42:24,730 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:24,817 INFO L225 Difference]: With dead ends: 40756 [2021-06-05 06:42:24,818 INFO L226 Difference]: Without dead ends: 40716 [2021-06-05 06:42:24,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 299.4ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:42:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40716 states. [2021-06-05 06:42:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40716 to 34086. [2021-06-05 06:42:25,686 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) [2021-06-05 06:42:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34086 states to 34086 states and 130579 transitions. [2021-06-05 06:42:25,790 INFO L78 Accepts]: Start accepts. Automaton has 34086 states and 130579 transitions. Word has length 28 [2021-06-05 06:42:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:25,790 INFO L482 AbstractCegarLoop]: Abstraction has 34086 states and 130579 transitions. [2021-06-05 06:42:25,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 34086 states and 130579 transitions. [2021-06-05 06:42:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:25,847 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:25,847 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:26,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4056 [2021-06-05 06:42:26,048 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:26,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:26,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1649950116, now seen corresponding path program 140 times [2021-06-05 06:42:26,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:26,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403383279] [2021-06-05 06:42:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:26,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:26,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403383279] [2021-06-05 06:42:26,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403383279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:26,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955500084] [2021-06-05 06:42:26,081 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 [2021-06-05 06:42:26,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:26,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:26,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:26,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:26,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955500084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:26,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:26,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:42:26,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225987644] [2021-06-05 06:42:26,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:42:26,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:26,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:42:26,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:42:26,212 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) [2021-06-05 06:42:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:27,588 INFO L93 Difference]: Finished difference Result 76027 states and 281494 transitions. [2021-06-05 06:42:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:42:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:27,770 INFO L225 Difference]: With dead ends: 76027 [2021-06-05 06:42:27,770 INFO L226 Difference]: Without dead ends: 76027 [2021-06-05 06:42:27,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 632.9ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:42:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76027 states. [2021-06-05 06:42:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76027 to 43183. [2021-06-05 06:42:29,040 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) [2021-06-05 06:42:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43183 states to 43183 states and 168694 transitions. [2021-06-05 06:42:29,151 INFO L78 Accepts]: Start accepts. Automaton has 43183 states and 168694 transitions. Word has length 28 [2021-06-05 06:42:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:29,151 INFO L482 AbstractCegarLoop]: Abstraction has 43183 states and 168694 transitions. [2021-06-05 06:42:29,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:29,151 INFO L276 IsEmpty]: Start isEmpty. Operand 43183 states and 168694 transitions. [2021-06-05 06:42:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:29,210 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:29,210 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:29,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4057 [2021-06-05 06:42:29,411 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:29,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:29,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1082998036, now seen corresponding path program 141 times [2021-06-05 06:42:29,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:29,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820924275] [2021-06-05 06:42:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:29,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:29,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820924275] [2021-06-05 06:42:29,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820924275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:29,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671893567] [2021-06-05 06:42:29,441 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 [2021-06-05 06:42:29,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:42:29,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:29,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:29,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:29,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671893567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:29,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:29,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:42:29,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473808156] [2021-06-05 06:42:29,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:42:29,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:29,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:42:29,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:42:29,559 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) [2021-06-05 06:42:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:31,001 INFO L93 Difference]: Finished difference Result 75388 states and 279801 transitions. [2021-06-05 06:42:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:42:31,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:31,193 INFO L225 Difference]: With dead ends: 75388 [2021-06-05 06:42:31,193 INFO L226 Difference]: Without dead ends: 75388 [2021-06-05 06:42:31,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 617.8ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:42:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75388 states. [2021-06-05 06:42:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75388 to 43180. [2021-06-05 06:42:32,522 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) [2021-06-05 06:42:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43180 states to 43180 states and 168680 transitions. [2021-06-05 06:42:32,635 INFO L78 Accepts]: Start accepts. Automaton has 43180 states and 168680 transitions. Word has length 28 [2021-06-05 06:42:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:32,635 INFO L482 AbstractCegarLoop]: Abstraction has 43180 states and 168680 transitions. [2021-06-05 06:42:32,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 43180 states and 168680 transitions. [2021-06-05 06:42:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:32,695 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:32,695 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:32,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4058,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:32,895 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:32,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2039623402, now seen corresponding path program 142 times [2021-06-05 06:42:32,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:32,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891990178] [2021-06-05 06:42:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:32,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:32,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891990178] [2021-06-05 06:42:32,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891990178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:32,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628780470] [2021-06-05 06:42:32,925 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 [2021-06-05 06:42:33,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:33,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:33,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:33,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:33,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628780470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:33,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:33,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:42:33,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911008256] [2021-06-05 06:42:33,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:42:33,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:33,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:42:33,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:42:33,238 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) [2021-06-05 06:42:34,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:34,357 INFO L93 Difference]: Finished difference Result 69979 states and 261702 transitions. [2021-06-05 06:42:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:42:34,357 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:34,531 INFO L225 Difference]: With dead ends: 69979 [2021-06-05 06:42:34,531 INFO L226 Difference]: Without dead ends: 69979 [2021-06-05 06:42:34,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 544.8ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:42:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69979 states. [2021-06-05 06:42:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69979 to 43204. [2021-06-05 06:42:35,849 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) [2021-06-05 06:42:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43204 states to 43204 states and 168784 transitions. [2021-06-05 06:42:35,988 INFO L78 Accepts]: Start accepts. Automaton has 43204 states and 168784 transitions. Word has length 28 [2021-06-05 06:42:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:35,988 INFO L482 AbstractCegarLoop]: Abstraction has 43204 states and 168784 transitions. [2021-06-05 06:42:35,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 43204 states and 168784 transitions. [2021-06-05 06:42:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:36,055 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:36,055 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:36,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4059,222 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:36,256 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:36,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:36,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2120999490, now seen corresponding path program 143 times [2021-06-05 06:42:36,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:36,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432675217] [2021-06-05 06:42:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:36,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:36,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432675217] [2021-06-05 06:42:36,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432675217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:36,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573172761] [2021-06-05 06:42:36,289 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 [2021-06-05 06:42:36,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:42:36,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:36,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:36,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:36,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573172761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:36,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:36,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:42:36,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790049077] [2021-06-05 06:42:36,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:42:36,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:42:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:42:36,403 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) [2021-06-05 06:42:37,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:37,678 INFO L93 Difference]: Finished difference Result 69094 states and 259411 transitions. [2021-06-05 06:42:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:42:37,678 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:37,850 INFO L225 Difference]: With dead ends: 69094 [2021-06-05 06:42:37,851 INFO L226 Difference]: Without dead ends: 69086 [2021-06-05 06:42:37,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 496.3ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:42:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69086 states. [2021-06-05 06:42:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69086 to 43204. [2021-06-05 06:42:39,012 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) [2021-06-05 06:42:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43204 states to 43204 states and 168778 transitions. [2021-06-05 06:42:39,125 INFO L78 Accepts]: Start accepts. Automaton has 43204 states and 168778 transitions. Word has length 28 [2021-06-05 06:42:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:39,125 INFO L482 AbstractCegarLoop]: Abstraction has 43204 states and 168778 transitions. [2021-06-05 06:42:39,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 43204 states and 168778 transitions. [2021-06-05 06:42:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:39,185 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:39,185 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:39,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4060,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:39,385 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:39,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:39,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1243310590, now seen corresponding path program 144 times [2021-06-05 06:42:39,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:39,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101368327] [2021-06-05 06:42:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:39,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:39,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101368327] [2021-06-05 06:42:39,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101368327] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:39,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700917001] [2021-06-05 06:42:39,416 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 [2021-06-05 06:42:39,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:42:39,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:39,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:39,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:39,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700917001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:39,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:39,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:42:39,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205816257] [2021-06-05 06:42:39,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:42:39,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:39,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:42:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:42:39,531 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) [2021-06-05 06:42:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:40,801 INFO L93 Difference]: Finished difference Result 68768 states and 258526 transitions. [2021-06-05 06:42:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:42:40,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:40,966 INFO L225 Difference]: With dead ends: 68768 [2021-06-05 06:42:40,967 INFO L226 Difference]: Without dead ends: 68768 [2021-06-05 06:42:40,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 734.3ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:42:41,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68768 states. [2021-06-05 06:42:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68768 to 43212. [2021-06-05 06:42:42,155 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) [2021-06-05 06:42:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43212 states to 43212 states and 168812 transitions. [2021-06-05 06:42:42,270 INFO L78 Accepts]: Start accepts. Automaton has 43212 states and 168812 transitions. Word has length 28 [2021-06-05 06:42:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:42,270 INFO L482 AbstractCegarLoop]: Abstraction has 43212 states and 168812 transitions. [2021-06-05 06:42:42,270 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 06:42:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 43212 states and 168812 transitions. [2021-06-05 06:42:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:42,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:42,329 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:42,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4061 [2021-06-05 06:42:42,529 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:42,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:42,529 INFO L82 PathProgramCache]: Analyzing trace with hash 399728564, now seen corresponding path program 145 times [2021-06-05 06:42:42,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:42,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806361731] [2021-06-05 06:42:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:42,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:42,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806361731] [2021-06-05 06:42:42,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806361731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:42,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222388978] [2021-06-05 06:42:42,572 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 [2021-06-05 06:42:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:42,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:42,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:42,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222388978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:42,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:42,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:42:42,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212188550] [2021-06-05 06:42:42,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:42:42,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:42,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:42:42,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:42:42,683 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) [2021-06-05 06:42:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:44,004 INFO L93 Difference]: Finished difference Result 68557 states and 258000 transitions. [2021-06-05 06:42:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:42:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:44,183 INFO L225 Difference]: With dead ends: 68557 [2021-06-05 06:42:44,184 INFO L226 Difference]: Without dead ends: 68549 [2021-06-05 06:42:44,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 497.4ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:42:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68549 states. [2021-06-05 06:42:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68549 to 43212. [2021-06-05 06:42:45,341 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) [2021-06-05 06:42:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43212 states to 43212 states and 168810 transitions. [2021-06-05 06:42:45,663 INFO L78 Accepts]: Start accepts. Automaton has 43212 states and 168810 transitions. Word has length 28 [2021-06-05 06:42:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:45,663 INFO L482 AbstractCegarLoop]: Abstraction has 43212 states and 168810 transitions. [2021-06-05 06:42:45,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 43212 states and 168810 transitions. [2021-06-05 06:42:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:45,730 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:45,730 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:45,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4062,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:45,931 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1403156548, now seen corresponding path program 146 times [2021-06-05 06:42:45,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:45,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491130233] [2021-06-05 06:42:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:45,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:45,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491130233] [2021-06-05 06:42:45,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491130233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:45,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840591699] [2021-06-05 06:42:45,962 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 [2021-06-05 06:42:45,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:45,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:45,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:45,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:46,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840591699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:46,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:46,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:42:46,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006514857] [2021-06-05 06:42:46,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:42:46,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:46,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:42:46,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:42:46,060 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) [2021-06-05 06:42:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:47,216 INFO L93 Difference]: Finished difference Result 67982 states and 254698 transitions. [2021-06-05 06:42:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:42:47,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:47,385 INFO L225 Difference]: With dead ends: 67982 [2021-06-05 06:42:47,385 INFO L226 Difference]: Without dead ends: 67982 [2021-06-05 06:42:47,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 571.3ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:42:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67982 states. [2021-06-05 06:42:48,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67982 to 46442. [2021-06-05 06:42:48,790 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) [2021-06-05 06:42:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46442 states to 46442 states and 181594 transitions. [2021-06-05 06:42:48,940 INFO L78 Accepts]: Start accepts. Automaton has 46442 states and 181594 transitions. Word has length 28 [2021-06-05 06:42:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:48,940 INFO L482 AbstractCegarLoop]: Abstraction has 46442 states and 181594 transitions. [2021-06-05 06:42:48,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 46442 states and 181594 transitions. [2021-06-05 06:42:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:49,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:49,015 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:49,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4063 [2021-06-05 06:42:49,215 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1484532636, now seen corresponding path program 147 times [2021-06-05 06:42:49,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:49,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993681844] [2021-06-05 06:42:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:49,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:49,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993681844] [2021-06-05 06:42:49,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993681844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:49,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741950965] [2021-06-05 06:42:49,249 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 [2021-06-05 06:42:49,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:49,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:49,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:49,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:49,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741950965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:49,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:49,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:42:49,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117493749] [2021-06-05 06:42:49,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:42:49,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:49,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:42:49,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:42:49,349 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) [2021-06-05 06:42:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:50,308 INFO L93 Difference]: Finished difference Result 67509 states and 253442 transitions. [2021-06-05 06:42:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:42:50,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:50,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:50,734 INFO L225 Difference]: With dead ends: 67509 [2021-06-05 06:42:50,734 INFO L226 Difference]: Without dead ends: 67501 [2021-06-05 06:42:50,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 459.3ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:42:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67501 states. [2021-06-05 06:42:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67501 to 46136. [2021-06-05 06:42:51,939 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) [2021-06-05 06:42:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46136 states to 46136 states and 180647 transitions. [2021-06-05 06:42:52,073 INFO L78 Accepts]: Start accepts. Automaton has 46136 states and 180647 transitions. Word has length 28 [2021-06-05 06:42:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:52,073 INFO L482 AbstractCegarLoop]: Abstraction has 46136 states and 180647 transitions. [2021-06-05 06:42:52,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 46136 states and 180647 transitions. [2021-06-05 06:42:52,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:52,136 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:52,136 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:52,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4064 [2021-06-05 06:42:52,336 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash -30559336, now seen corresponding path program 148 times [2021-06-05 06:42:52,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:52,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400118439] [2021-06-05 06:42:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:52,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:52,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400118439] [2021-06-05 06:42:52,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400118439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:52,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310983942] [2021-06-05 06:42:52,367 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 [2021-06-05 06:42:52,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:52,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:52,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:52,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:52,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310983942] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:52,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:52,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:42:52,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219445728] [2021-06-05 06:42:52,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:42:52,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:52,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:42:52,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:42:52,460 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) [2021-06-05 06:42:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:53,549 INFO L93 Difference]: Finished difference Result 65985 states and 249225 transitions. [2021-06-05 06:42:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:42:53,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:53,705 INFO L225 Difference]: With dead ends: 65985 [2021-06-05 06:42:53,705 INFO L226 Difference]: Without dead ends: 65961 [2021-06-05 06:42:53,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 334.6ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:42:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65961 states. [2021-06-05 06:42:54,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65961 to 46032. [2021-06-05 06:42:54,971 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) [2021-06-05 06:42:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46032 states to 46032 states and 180239 transitions. [2021-06-05 06:42:55,092 INFO L78 Accepts]: Start accepts. Automaton has 46032 states and 180239 transitions. Word has length 28 [2021-06-05 06:42:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:55,092 INFO L482 AbstractCegarLoop]: Abstraction has 46032 states and 180239 transitions. [2021-06-05 06:42:55,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 46032 states and 180239 transitions. [2021-06-05 06:42:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:55,156 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:55,156 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:55,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4065,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:55,356 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:55,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:55,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1566567380, now seen corresponding path program 149 times [2021-06-05 06:42:55,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:55,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951864759] [2021-06-05 06:42:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:55,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:55,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951864759] [2021-06-05 06:42:55,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951864759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:55,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413995559] [2021-06-05 06:42:55,392 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 [2021-06-05 06:42:55,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:42:55,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:55,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:55,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:55,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413995559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:55,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:55,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:42:55,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141100005] [2021-06-05 06:42:55,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:42:55,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:55,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:42:55,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:42:55,510 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) [2021-06-05 06:42:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:56,788 INFO L93 Difference]: Finished difference Result 67202 states and 252555 transitions. [2021-06-05 06:42:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 06:42:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:56,952 INFO L225 Difference]: With dead ends: 67202 [2021-06-05 06:42:56,952 INFO L226 Difference]: Without dead ends: 67202 [2021-06-05 06:42:56,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 556.1ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:42:57,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67202 states. [2021-06-05 06:42:58,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67202 to 46128. [2021-06-05 06:42:58,154 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) [2021-06-05 06:42:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46128 states to 46128 states and 180553 transitions. [2021-06-05 06:42:58,275 INFO L78 Accepts]: Start accepts. Automaton has 46128 states and 180553 transitions. Word has length 28 [2021-06-05 06:42:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:58,275 INFO L482 AbstractCegarLoop]: Abstraction has 46128 states and 180553 transitions. [2021-06-05 06:42:58,275 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 06:42:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 46128 states and 180553 transitions. [2021-06-05 06:42:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:42:58,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:58,338 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:58,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4066 [2021-06-05 06:42:58,541 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:58,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1085360762, now seen corresponding path program 150 times [2021-06-05 06:42:58,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:58,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778740920] [2021-06-05 06:42:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:42:58,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:58,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778740920] [2021-06-05 06:42:58,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778740920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:58,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395460817] [2021-06-05 06:42:58,572 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 [2021-06-05 06:42:58,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:42:58,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:58,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:42:58,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:58,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395460817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:58,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:58,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:42:58,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139971161] [2021-06-05 06:42:58,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:42:58,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:42:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:42:58,683 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) [2021-06-05 06:42:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:59,839 INFO L93 Difference]: Finished difference Result 66883 states and 251651 transitions. [2021-06-05 06:42:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:42:59,839 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:42:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:59,999 INFO L225 Difference]: With dead ends: 66883 [2021-06-05 06:43:00,000 INFO L226 Difference]: Without dead ends: 66875 [2021-06-05 06:43:00,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 684.8ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:43:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66875 states. [2021-06-05 06:43:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66875 to 46060. [2021-06-05 06:43:01,240 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) [2021-06-05 06:43:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46060 states to 46060 states and 180341 transitions. [2021-06-05 06:43:01,360 INFO L78 Accepts]: Start accepts. Automaton has 46060 states and 180341 transitions. Word has length 28 [2021-06-05 06:43:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:01,361 INFO L482 AbstractCegarLoop]: Abstraction has 46060 states and 180341 transitions. [2021-06-05 06:43:01,361 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 06:43:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 46060 states and 180341 transitions. [2021-06-05 06:43:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:01,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:01,422 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:01,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4067 [2021-06-05 06:43:01,623 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:01,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:01,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1942149356, now seen corresponding path program 151 times [2021-06-05 06:43:01,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:01,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431453532] [2021-06-05 06:43:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:43:01,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:01,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431453532] [2021-06-05 06:43:01,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431453532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:01,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471767472] [2021-06-05 06:43:01,660 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 [2021-06-05 06:43:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:01,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:01,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:01,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471767472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:01,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:01,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:43:01,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418455147] [2021-06-05 06:43:01,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:01,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:01,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:01,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:01,760 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) [2021-06-05 06:43:02,163 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-05 06:43:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:02,785 INFO L93 Difference]: Finished difference Result 65614 states and 248140 transitions. [2021-06-05 06:43:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:43:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:02,948 INFO L225 Difference]: With dead ends: 65614 [2021-06-05 06:43:02,948 INFO L226 Difference]: Without dead ends: 65590 [2021-06-05 06:43:02,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 554.6ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:43:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65590 states. [2021-06-05 06:43:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65590 to 46036. [2021-06-05 06:43:04,139 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) [2021-06-05 06:43:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46036 states to 46036 states and 180253 transitions. [2021-06-05 06:43:04,258 INFO L78 Accepts]: Start accepts. Automaton has 46036 states and 180253 transitions. Word has length 28 [2021-06-05 06:43:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:04,258 INFO L482 AbstractCegarLoop]: Abstraction has 46036 states and 180253 transitions. [2021-06-05 06:43:04,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:04,258 INFO L276 IsEmpty]: Start isEmpty. Operand 46036 states and 180253 transitions. [2021-06-05 06:43:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:04,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:04,321 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:04,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-05 06:43:04,521 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:04,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:04,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1119483464, now seen corresponding path program 152 times [2021-06-05 06:43:04,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:04,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559848255] [2021-06-05 06:43:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:04,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:04,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559848255] [2021-06-05 06:43:04,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559848255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:04,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796330991] [2021-06-05 06:43:04,557 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 [2021-06-05 06:43:04,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:04,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:04,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:04,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796330991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:04,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:04,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:43:04,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347498578] [2021-06-05 06:43:04,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:43:04,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:04,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:43:04,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:43:04,846 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) [2021-06-05 06:43:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:06,263 INFO L93 Difference]: Finished difference Result 68913 states and 257576 transitions. [2021-06-05 06:43:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 06:43:06,263 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:06,432 INFO L225 Difference]: With dead ends: 68913 [2021-06-05 06:43:06,432 INFO L226 Difference]: Without dead ends: 68913 [2021-06-05 06:43:06,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 990.6ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 06:43:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68913 states. [2021-06-05 06:43:07,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68913 to 50828. [2021-06-05 06:43:07,894 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) [2021-06-05 06:43:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50828 states to 50828 states and 196461 transitions. [2021-06-05 06:43:08,035 INFO L78 Accepts]: Start accepts. Automaton has 50828 states and 196461 transitions. Word has length 28 [2021-06-05 06:43:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:08,035 INFO L482 AbstractCegarLoop]: Abstraction has 50828 states and 196461 transitions. [2021-06-05 06:43:08,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 50828 states and 196461 transitions. [2021-06-05 06:43:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:08,105 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:08,105 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:08,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:08,305 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:08,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:08,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1200859552, now seen corresponding path program 153 times [2021-06-05 06:43:08,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:08,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907931158] [2021-06-05 06:43:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:08,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:08,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907931158] [2021-06-05 06:43:08,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907931158] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:08,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312202845] [2021-06-05 06:43:08,341 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 [2021-06-05 06:43:08,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:08,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:08,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:08,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:08,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312202845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:08,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:08,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:43:08,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287218938] [2021-06-05 06:43:08,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:43:08,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:08,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:43:08,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:43:08,431 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) [2021-06-05 06:43:09,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:09,903 INFO L93 Difference]: Finished difference Result 68143 states and 255462 transitions. [2021-06-05 06:43:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:43:09,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:10,113 INFO L225 Difference]: With dead ends: 68143 [2021-06-05 06:43:10,113 INFO L226 Difference]: Without dead ends: 68135 [2021-06-05 06:43:10,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 627.6ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:43:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68135 states. [2021-06-05 06:43:11,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68135 to 49664. [2021-06-05 06:43:11,360 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) [2021-06-05 06:43:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49664 states to 49664 states and 192831 transitions. [2021-06-05 06:43:11,498 INFO L78 Accepts]: Start accepts. Automaton has 49664 states and 192831 transitions. Word has length 28 [2021-06-05 06:43:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:11,499 INFO L482 AbstractCegarLoop]: Abstraction has 49664 states and 192831 transitions. [2021-06-05 06:43:11,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:11,499 INFO L276 IsEmpty]: Start isEmpty. Operand 49664 states and 192831 transitions. [2021-06-05 06:43:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:11,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:11,570 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:11,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4070 [2021-06-05 06:43:11,770 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:11,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:11,770 INFO L82 PathProgramCache]: Analyzing trace with hash -314232420, now seen corresponding path program 154 times [2021-06-05 06:43:11,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:11,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968483447] [2021-06-05 06:43:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:11,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:11,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968483447] [2021-06-05 06:43:11,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968483447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:11,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949092207] [2021-06-05 06:43:11,806 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 [2021-06-05 06:43:11,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:11,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:11,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:11,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:11,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949092207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:11,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:11,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:43:11,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870942690] [2021-06-05 06:43:11,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:43:11,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:43:11,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:43:11,889 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) [2021-06-05 06:43:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:13,244 INFO L93 Difference]: Finished difference Result 66443 states and 250710 transitions. [2021-06-05 06:43:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:43:13,245 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:13,402 INFO L225 Difference]: With dead ends: 66443 [2021-06-05 06:43:13,402 INFO L226 Difference]: Without dead ends: 66419 [2021-06-05 06:43:13,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 550.6ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:43:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66419 states. [2021-06-05 06:43:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66419 to 49644. [2021-06-05 06:43:14,777 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) [2021-06-05 06:43:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49644 states to 49644 states and 192667 transitions. [2021-06-05 06:43:14,913 INFO L78 Accepts]: Start accepts. Automaton has 49644 states and 192667 transitions. Word has length 28 [2021-06-05 06:43:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:14,913 INFO L482 AbstractCegarLoop]: Abstraction has 49644 states and 192667 transitions. [2021-06-05 06:43:14,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 49644 states and 192667 transitions. [2021-06-05 06:43:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:14,980 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:14,980 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:15,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4071,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:15,180 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:15,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1316197732, now seen corresponding path program 155 times [2021-06-05 06:43:15,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:15,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089572571] [2021-06-05 06:43:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:15,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:15,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089572571] [2021-06-05 06:43:15,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089572571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:15,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036540057] [2021-06-05 06:43:15,217 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 [2021-06-05 06:43:15,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:43:15,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:15,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:15,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:15,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036540057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:15,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:15,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:43:15,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860649489] [2021-06-05 06:43:15,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:43:15,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:15,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:43:15,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:43:15,303 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) [2021-06-05 06:43:16,169 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-06-05 06:43:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:16,547 INFO L93 Difference]: Finished difference Result 67813 states and 254591 transitions. [2021-06-05 06:43:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:43:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:16,712 INFO L225 Difference]: With dead ends: 67813 [2021-06-05 06:43:16,712 INFO L226 Difference]: Without dead ends: 67773 [2021-06-05 06:43:16,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 710.5ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:43:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67773 states. [2021-06-05 06:43:17,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67773 to 49798. [2021-06-05 06:43:17,964 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) [2021-06-05 06:43:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49798 states to 49798 states and 193232 transitions. [2021-06-05 06:43:18,105 INFO L78 Accepts]: Start accepts. Automaton has 49798 states and 193232 transitions. Word has length 28 [2021-06-05 06:43:18,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:18,105 INFO L482 AbstractCegarLoop]: Abstraction has 49798 states and 193232 transitions. [2021-06-05 06:43:18,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 49798 states and 193232 transitions. [2021-06-05 06:43:18,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:18,173 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:18,173 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:18,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4072 [2021-06-05 06:43:18,376 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1262992088, now seen corresponding path program 156 times [2021-06-05 06:43:18,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:18,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872689539] [2021-06-05 06:43:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:18,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:18,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872689539] [2021-06-05 06:43:18,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872689539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:18,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616260152] [2021-06-05 06:43:18,414 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 [2021-06-05 06:43:18,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:43:18,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:18,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:18,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:18,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616260152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:18,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:18,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:18,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430402351] [2021-06-05 06:43:18,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:18,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:18,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:18,533 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) [2021-06-05 06:43:18,860 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2021-06-05 06:43:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:20,161 INFO L93 Difference]: Finished difference Result 66932 states and 251929 transitions. [2021-06-05 06:43:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 06:43:20,161 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:20,324 INFO L225 Difference]: With dead ends: 66932 [2021-06-05 06:43:20,324 INFO L226 Difference]: Without dead ends: 66932 [2021-06-05 06:43:20,325 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 1017.8ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 06:43:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66932 states. [2021-06-05 06:43:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66932 to 50703. [2021-06-05 06:43:21,553 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) [2021-06-05 06:43:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50703 states to 50703 states and 196303 transitions. [2021-06-05 06:43:21,884 INFO L78 Accepts]: Start accepts. Automaton has 50703 states and 196303 transitions. Word has length 28 [2021-06-05 06:43:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:21,884 INFO L482 AbstractCegarLoop]: Abstraction has 50703 states and 196303 transitions. [2021-06-05 06:43:21,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 50703 states and 196303 transitions. [2021-06-05 06:43:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:21,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:21,954 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:22,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4073,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:22,154 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1388936054, now seen corresponding path program 157 times [2021-06-05 06:43:22,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:22,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913661680] [2021-06-05 06:43:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:22,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:22,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913661680] [2021-06-05 06:43:22,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913661680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:22,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696340826] [2021-06-05 06:43:22,201 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 [2021-06-05 06:43:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:22,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:22,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:22,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696340826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:22,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:22,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:22,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375884665] [2021-06-05 06:43:22,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:22,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:22,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:22,314 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) [2021-06-05 06:43:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:23,512 INFO L93 Difference]: Finished difference Result 66428 states and 250518 transitions. [2021-06-05 06:43:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:43:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:23,674 INFO L225 Difference]: With dead ends: 66428 [2021-06-05 06:43:23,674 INFO L226 Difference]: Without dead ends: 66420 [2021-06-05 06:43:23,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 638.8ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:43:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66420 states. [2021-06-05 06:43:25,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66420 to 50627. [2021-06-05 06:43:25,061 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) [2021-06-05 06:43:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50627 states to 50627 states and 196067 transitions. [2021-06-05 06:43:25,206 INFO L78 Accepts]: Start accepts. Automaton has 50627 states and 196067 transitions. Word has length 28 [2021-06-05 06:43:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:25,206 INFO L482 AbstractCegarLoop]: Abstraction has 50627 states and 196067 transitions. [2021-06-05 06:43:25,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 50627 states and 196067 transitions. [2021-06-05 06:43:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:25,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:25,277 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:25,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4074 [2021-06-05 06:43:25,477 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:25,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1638574064, now seen corresponding path program 158 times [2021-06-05 06:43:25,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:25,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599582695] [2021-06-05 06:43:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:25,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:25,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599582695] [2021-06-05 06:43:25,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599582695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:25,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903128984] [2021-06-05 06:43:25,514 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 [2021-06-05 06:43:25,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:25,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:25,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:25,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:25,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903128984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:25,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:25,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:25,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573365632] [2021-06-05 06:43:25,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:25,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:25,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:25,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:25,625 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) [2021-06-05 06:43:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:26,679 INFO L93 Difference]: Finished difference Result 65905 states and 249272 transitions. [2021-06-05 06:43:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:43:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:27,099 INFO L225 Difference]: With dead ends: 65905 [2021-06-05 06:43:27,099 INFO L226 Difference]: Without dead ends: 65881 [2021-06-05 06:43:27,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 526.0ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:43:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65881 states. [2021-06-05 06:43:28,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65881 to 50613. [2021-06-05 06:43:28,290 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) [2021-06-05 06:43:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50613 states to 50613 states and 196012 transitions. [2021-06-05 06:43:28,432 INFO L78 Accepts]: Start accepts. Automaton has 50613 states and 196012 transitions. Word has length 28 [2021-06-05 06:43:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:28,432 INFO L482 AbstractCegarLoop]: Abstraction has 50613 states and 196012 transitions. [2021-06-05 06:43:28,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 50613 states and 196012 transitions. [2021-06-05 06:43:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:28,501 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:28,501 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:28,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4075,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:28,702 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:28,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1972807316, now seen corresponding path program 159 times [2021-06-05 06:43:28,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:28,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629386789] [2021-06-05 06:43:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:28,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:28,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629386789] [2021-06-05 06:43:28,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629386789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:28,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963206496] [2021-06-05 06:43:28,739 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 [2021-06-05 06:43:28,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:28,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:28,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:28,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963206496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:28,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:28,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:43:28,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558747058] [2021-06-05 06:43:28,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:28,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:28,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:28,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:28,832 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) [2021-06-05 06:43:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:29,829 INFO L93 Difference]: Finished difference Result 65687 states and 248579 transitions. [2021-06-05 06:43:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:43:29,830 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:30,253 INFO L225 Difference]: With dead ends: 65687 [2021-06-05 06:43:30,253 INFO L226 Difference]: Without dead ends: 65647 [2021-06-05 06:43:30,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 492.8ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:43:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65647 states. [2021-06-05 06:43:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65647 to 50962. [2021-06-05 06:43:31,497 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) [2021-06-05 06:43:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50962 states to 50962 states and 197441 transitions. [2021-06-05 06:43:31,640 INFO L78 Accepts]: Start accepts. Automaton has 50962 states and 197441 transitions. Word has length 28 [2021-06-05 06:43:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:31,640 INFO L482 AbstractCegarLoop]: Abstraction has 50962 states and 197441 transitions. [2021-06-05 06:43:31,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 50962 states and 197441 transitions. [2021-06-05 06:43:31,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:31,711 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:31,711 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:31,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4076 [2021-06-05 06:43:31,912 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:31,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1825824890, now seen corresponding path program 160 times [2021-06-05 06:43:31,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:31,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465073667] [2021-06-05 06:43:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:31,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:31,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465073667] [2021-06-05 06:43:31,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465073667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:31,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639233679] [2021-06-05 06:43:31,953 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 [2021-06-05 06:43:31,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:31,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:31,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:31,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:32,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639233679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:32,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:32,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:32,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768973105] [2021-06-05 06:43:32,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:32,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:32,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:32,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:32,064 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) [2021-06-05 06:43:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:33,551 INFO L93 Difference]: Finished difference Result 79769 states and 298419 transitions. [2021-06-05 06:43:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:43:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:33,744 INFO L225 Difference]: With dead ends: 79769 [2021-06-05 06:43:33,744 INFO L226 Difference]: Without dead ends: 79769 [2021-06-05 06:43:33,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 565.0ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:43:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79769 states. [2021-06-05 06:43:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79769 to 52128. [2021-06-05 06:43:35,109 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) [2021-06-05 06:43:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52128 states to 52128 states and 202596 transitions. [2021-06-05 06:43:35,252 INFO L78 Accepts]: Start accepts. Automaton has 52128 states and 202596 transitions. Word has length 28 [2021-06-05 06:43:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:35,252 INFO L482 AbstractCegarLoop]: Abstraction has 52128 states and 202596 transitions. [2021-06-05 06:43:35,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 52128 states and 202596 transitions. [2021-06-05 06:43:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:35,322 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:35,322 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:35,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4077 [2021-06-05 06:43:35,523 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:35,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1151103012, now seen corresponding path program 161 times [2021-06-05 06:43:35,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:35,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133289500] [2021-06-05 06:43:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:35,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:35,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133289500] [2021-06-05 06:43:35,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133289500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:35,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126448075] [2021-06-05 06:43:35,559 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 [2021-06-05 06:43:35,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:43:35,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:35,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:35,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:35,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126448075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:35,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:35,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:35,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611512329] [2021-06-05 06:43:35,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:35,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:35,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:35,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:35,668 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) [2021-06-05 06:43:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:37,010 INFO L93 Difference]: Finished difference Result 72910 states and 276752 transitions. [2021-06-05 06:43:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:43:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:37,196 INFO L225 Difference]: With dead ends: 72910 [2021-06-05 06:43:37,196 INFO L226 Difference]: Without dead ends: 72910 [2021-06-05 06:43:37,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 724.0ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:43:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72910 states. [2021-06-05 06:43:38,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72910 to 52158. [2021-06-05 06:43:38,561 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) [2021-06-05 06:43:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52158 states to 52158 states and 202703 transitions. [2021-06-05 06:43:38,709 INFO L78 Accepts]: Start accepts. Automaton has 52158 states and 202703 transitions. Word has length 28 [2021-06-05 06:43:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:38,709 INFO L482 AbstractCegarLoop]: Abstraction has 52158 states and 202703 transitions. [2021-06-05 06:43:38,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 52158 states and 202703 transitions. [2021-06-05 06:43:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:39,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:39,018 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:39,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4078 [2021-06-05 06:43:39,218 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:39,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:39,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1490504108, now seen corresponding path program 162 times [2021-06-05 06:43:39,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:39,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816469998] [2021-06-05 06:43:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:39,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:39,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816469998] [2021-06-05 06:43:39,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816469998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:39,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191984319] [2021-06-05 06:43:39,265 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 [2021-06-05 06:43:39,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:43:39,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:39,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:39,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:39,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191984319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:39,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:39,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:39,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013335350] [2021-06-05 06:43:39,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:39,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:39,399 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) [2021-06-05 06:43:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:40,917 INFO L93 Difference]: Finished difference Result 73768 states and 279188 transitions. [2021-06-05 06:43:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:43:40,918 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:41,096 INFO L225 Difference]: With dead ends: 73768 [2021-06-05 06:43:41,097 INFO L226 Difference]: Without dead ends: 73768 [2021-06-05 06:43:41,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 867.4ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 06:43:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73768 states. [2021-06-05 06:43:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73768 to 52422. [2021-06-05 06:43:42,496 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) [2021-06-05 06:43:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52422 states to 52422 states and 203561 transitions. [2021-06-05 06:43:42,643 INFO L78 Accepts]: Start accepts. Automaton has 52422 states and 203561 transitions. Word has length 28 [2021-06-05 06:43:42,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:42,643 INFO L482 AbstractCegarLoop]: Abstraction has 52422 states and 203561 transitions. [2021-06-05 06:43:42,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 52422 states and 203561 transitions. [2021-06-05 06:43:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:42,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:42,715 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:42,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-05 06:43:42,916 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 152535046, now seen corresponding path program 163 times [2021-06-05 06:43:42,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:42,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532318053] [2021-06-05 06:43:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:42,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:42,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532318053] [2021-06-05 06:43:42,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532318053] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:42,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108718516] [2021-06-05 06:43:42,952 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 [2021-06-05 06:43:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:42,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:42,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:43,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108718516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:43,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:43,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:43,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397525790] [2021-06-05 06:43:43,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:43,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:43,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:43,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:43,064 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) [2021-06-05 06:43:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:44,605 INFO L93 Difference]: Finished difference Result 72980 states and 276953 transitions. [2021-06-05 06:43:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:43:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:44,784 INFO L225 Difference]: With dead ends: 72980 [2021-06-05 06:43:44,784 INFO L226 Difference]: Without dead ends: 72976 [2021-06-05 06:43:44,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 673.3ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 06:43:44,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72976 states. [2021-06-05 06:43:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72976 to 52058. [2021-06-05 06:43:46,114 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) [2021-06-05 06:43:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52058 states to 52058 states and 202325 transitions. [2021-06-05 06:43:46,260 INFO L78 Accepts]: Start accepts. Automaton has 52058 states and 202325 transitions. Word has length 28 [2021-06-05 06:43:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:46,260 INFO L482 AbstractCegarLoop]: Abstraction has 52058 states and 202325 transitions. [2021-06-05 06:43:46,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 52058 states and 202325 transitions. [2021-06-05 06:43:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:46,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:46,333 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:46,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4080 [2021-06-05 06:43:46,533 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:46,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1936993134, now seen corresponding path program 164 times [2021-06-05 06:43:46,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:46,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956118075] [2021-06-05 06:43:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:46,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:46,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956118075] [2021-06-05 06:43:46,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956118075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:46,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007189993] [2021-06-05 06:43:46,570 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 [2021-06-05 06:43:46,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:46,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:46,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:46,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:46,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007189993] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:46,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:46,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:46,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706322718] [2021-06-05 06:43:46,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:46,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:46,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:46,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:46,678 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) [2021-06-05 06:43:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:47,783 INFO L93 Difference]: Finished difference Result 66943 states and 255942 transitions. [2021-06-05 06:43:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:43:47,783 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:47,948 INFO L225 Difference]: With dead ends: 66943 [2021-06-05 06:43:47,949 INFO L226 Difference]: Without dead ends: 66943 [2021-06-05 06:43:47,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 443.1ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:43:48,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66943 states. [2021-06-05 06:43:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66943 to 52074. [2021-06-05 06:43:49,193 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) [2021-06-05 06:43:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52074 states to 52074 states and 202473 transitions. [2021-06-05 06:43:49,339 INFO L78 Accepts]: Start accepts. Automaton has 52074 states and 202473 transitions. Word has length 28 [2021-06-05 06:43:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:49,339 INFO L482 AbstractCegarLoop]: Abstraction has 52074 states and 202473 transitions. [2021-06-05 06:43:49,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 52074 states and 202473 transitions. [2021-06-05 06:43:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:49,410 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:49,410 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:49,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4081,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:49,610 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash -756673454, now seen corresponding path program 165 times [2021-06-05 06:43:49,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:49,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946915485] [2021-06-05 06:43:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:49,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:49,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946915485] [2021-06-05 06:43:49,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946915485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:49,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460933842] [2021-06-05 06:43:49,647 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 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:49,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:49,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:49,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:49,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460933842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:49,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:49,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:49,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814676492] [2021-06-05 06:43:49,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:49,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:49,751 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) [2021-06-05 06:43:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:50,757 INFO L93 Difference]: Finished difference Result 66257 states and 254067 transitions. [2021-06-05 06:43:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:43:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:50,929 INFO L225 Difference]: With dead ends: 66257 [2021-06-05 06:43:50,929 INFO L226 Difference]: Without dead ends: 66245 [2021-06-05 06:43:50,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 339.4ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:43:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66245 states. [2021-06-05 06:43:52,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66245 to 52008. [2021-06-05 06:43:52,179 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) [2021-06-05 06:43:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52008 states to 52008 states and 202270 transitions. [2021-06-05 06:43:52,327 INFO L78 Accepts]: Start accepts. Automaton has 52008 states and 202270 transitions. Word has length 28 [2021-06-05 06:43:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:52,327 INFO L482 AbstractCegarLoop]: Abstraction has 52008 states and 202270 transitions. [2021-06-05 06:43:52,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 52008 states and 202270 transitions. [2021-06-05 06:43:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:52,401 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:52,401 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:52,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4082 [2021-06-05 06:43:52,601 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1537074702, now seen corresponding path program 166 times [2021-06-05 06:43:52,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:52,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033532343] [2021-06-05 06:43:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:52,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:52,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033532343] [2021-06-05 06:43:52,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033532343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:52,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8362174] [2021-06-05 06:43:52,640 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 [2021-06-05 06:43:52,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:52,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:52,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:52,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:52,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8362174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:52,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:52,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:52,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860166853] [2021-06-05 06:43:52,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:52,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:52,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:52,749 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) [2021-06-05 06:43:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:53,668 INFO L93 Difference]: Finished difference Result 56548 states and 217322 transitions. [2021-06-05 06:43:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:43:53,669 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:53,807 INFO L225 Difference]: With dead ends: 56548 [2021-06-05 06:43:53,807 INFO L226 Difference]: Without dead ends: 56548 [2021-06-05 06:43:53,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 301.1ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:43:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56548 states. [2021-06-05 06:43:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56548 to 52216. [2021-06-05 06:43:54,940 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) [2021-06-05 06:43:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52216 states to 52216 states and 202962 transitions. [2021-06-05 06:43:55,089 INFO L78 Accepts]: Start accepts. Automaton has 52216 states and 202962 transitions. Word has length 28 [2021-06-05 06:43:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:55,089 INFO L482 AbstractCegarLoop]: Abstraction has 52216 states and 202962 transitions. [2021-06-05 06:43:55,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 52216 states and 202962 transitions. [2021-06-05 06:43:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:55,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:55,165 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:55,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4083,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:55,366 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash 538506736, now seen corresponding path program 167 times [2021-06-05 06:43:55,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:55,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334444759] [2021-06-05 06:43:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:55,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:55,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334444759] [2021-06-05 06:43:55,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334444759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:55,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387400736] [2021-06-05 06:43:55,399 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 [2021-06-05 06:43:55,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:43:55,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:55,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:55,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:55,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387400736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:55,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:55,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:43:55,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785982894] [2021-06-05 06:43:55,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:55,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:55,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:55,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:55,502 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) [2021-06-05 06:43:56,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:56,114 INFO L93 Difference]: Finished difference Result 56395 states and 216924 transitions. [2021-06-05 06:43:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:43:56,115 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:56,256 INFO L225 Difference]: With dead ends: 56395 [2021-06-05 06:43:56,256 INFO L226 Difference]: Without dead ends: 56391 [2021-06-05 06:43:56,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 239.2ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:43:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56391 states. [2021-06-05 06:43:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56391 to 52156. [2021-06-05 06:43:57,480 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) [2021-06-05 06:43:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52156 states to 52156 states and 202770 transitions. [2021-06-05 06:43:57,896 INFO L78 Accepts]: Start accepts. Automaton has 52156 states and 202770 transitions. Word has length 28 [2021-06-05 06:43:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:57,896 INFO L482 AbstractCegarLoop]: Abstraction has 52156 states and 202770 transitions. [2021-06-05 06:43:57,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 52156 states and 202770 transitions. [2021-06-05 06:43:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:57,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:57,972 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:58,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4084 [2021-06-05 06:43:58,172 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash 508703680, now seen corresponding path program 80 times [2021-06-05 06:43:58,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:58,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625104446] [2021-06-05 06:43:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:58,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:58,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625104446] [2021-06-05 06:43:58,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625104446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599621017] [2021-06-05 06:43:58,213 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) [2021-06-05 06:43:58,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:58,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:58,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:58,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:58,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599621017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:58,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:43:58,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236386020] [2021-06-05 06:43:58,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:43:58,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:58,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:43:58,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:43:58,289 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) [2021-06-05 06:43:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:58,847 INFO L93 Difference]: Finished difference Result 56442 states and 217026 transitions. [2021-06-05 06:43:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:43:58,848 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:58,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:58,985 INFO L225 Difference]: With dead ends: 56442 [2021-06-05 06:43:58,985 INFO L226 Difference]: Without dead ends: 56442 [2021-06-05 06:43:58,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:43:59,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56442 states. [2021-06-05 06:44:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56442 to 52260. [2021-06-05 06:44:00,099 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) [2021-06-05 06:44:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52260 states to 52260 states and 203094 transitions. [2021-06-05 06:44:00,243 INFO L78 Accepts]: Start accepts. Automaton has 52260 states and 203094 transitions. Word has length 28 [2021-06-05 06:44:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:00,243 INFO L482 AbstractCegarLoop]: Abstraction has 52260 states and 203094 transitions. [2021-06-05 06:44:00,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 52260 states and 203094 transitions. [2021-06-05 06:44:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:00,313 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:00,313 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:00,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4085,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:00,516 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:00,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1414052632, now seen corresponding path program 81 times [2021-06-05 06:44:00,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:00,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558988036] [2021-06-05 06:44:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:00,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:00,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558988036] [2021-06-05 06:44:00,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558988036] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53548661] [2021-06-05 06:44:00,547 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 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:00,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:44:00,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:00,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:00,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:00,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53548661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:00,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 06:44:00,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129039134] [2021-06-05 06:44:00,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:00,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:00,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:00,862 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) [2021-06-05 06:44:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:01,307 INFO L93 Difference]: Finished difference Result 56568 states and 217524 transitions. [2021-06-05 06:44:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:44:01,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:01,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:01,444 INFO L225 Difference]: With dead ends: 56568 [2021-06-05 06:44:01,444 INFO L226 Difference]: Without dead ends: 56556 [2021-06-05 06:44:01,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:44:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56556 states. [2021-06-05 06:44:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56556 to 52394. [2021-06-05 06:44:02,533 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) [2021-06-05 06:44:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52394 states to 52394 states and 203529 transitions. [2021-06-05 06:44:02,679 INFO L78 Accepts]: Start accepts. Automaton has 52394 states and 203529 transitions. Word has length 28 [2021-06-05 06:44:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:02,679 INFO L482 AbstractCegarLoop]: Abstraction has 52394 states and 203529 transitions. [2021-06-05 06:44:02,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,679 INFO L276 IsEmpty]: Start isEmpty. Operand 52394 states and 203529 transitions. [2021-06-05 06:44:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:02,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:02,751 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:02,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4086 [2021-06-05 06:44:02,952 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:02,952 INFO L82 PathProgramCache]: Analyzing trace with hash 421559068, now seen corresponding path program 82 times [2021-06-05 06:44:02,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:02,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448657046] [2021-06-05 06:44:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:02,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:02,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448657046] [2021-06-05 06:44:02,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448657046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:02,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923102801] [2021-06-05 06:44:02,988 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 [2021-06-05 06:44:03,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:03,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:03,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:03,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:03,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923102801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:03,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:44:03,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27694320] [2021-06-05 06:44:03,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:03,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:03,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:03,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:03,053 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) [2021-06-05 06:44:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:03,766 INFO L93 Difference]: Finished difference Result 56532 states and 217440 transitions. [2021-06-05 06:44:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:44:03,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:03,910 INFO L225 Difference]: With dead ends: 56532 [2021-06-05 06:44:03,911 INFO L226 Difference]: Without dead ends: 56512 [2021-06-05 06:44:03,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 155.7ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:44:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56512 states. [2021-06-05 06:44:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56512 to 52394. [2021-06-05 06:44:05,032 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) [2021-06-05 06:44:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52394 states to 52394 states and 203525 transitions. [2021-06-05 06:44:05,178 INFO L78 Accepts]: Start accepts. Automaton has 52394 states and 203525 transitions. Word has length 28 [2021-06-05 06:44:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:05,178 INFO L482 AbstractCegarLoop]: Abstraction has 52394 states and 203525 transitions. [2021-06-05 06:44:05,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 52394 states and 203525 transitions. [2021-06-05 06:44:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:05,250 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:05,250 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:05,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4087 [2021-06-05 06:44:05,451 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:05,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1989119940, now seen corresponding path program 168 times [2021-06-05 06:44:05,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:05,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802305866] [2021-06-05 06:44:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:05,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802305866] [2021-06-05 06:44:05,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802305866] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137415298] [2021-06-05 06:44:05,485 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 [2021-06-05 06:44:05,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:05,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:05,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:05,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137415298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:05,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:05,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376452877] [2021-06-05 06:44:05,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:05,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:05,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:05,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:05,566 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) [2021-06-05 06:44:06,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:06,029 INFO L93 Difference]: Finished difference Result 57355 states and 221090 transitions. [2021-06-05 06:44:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:44:06,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:06,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:06,170 INFO L225 Difference]: With dead ends: 57355 [2021-06-05 06:44:06,170 INFO L226 Difference]: Without dead ends: 57342 [2021-06-05 06:44:06,170 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:44:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57342 states. [2021-06-05 06:44:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57342 to 55127. [2021-06-05 06:44:07,350 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) [2021-06-05 06:44:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55127 states to 55127 states and 214513 transitions. [2021-06-05 06:44:07,784 INFO L78 Accepts]: Start accepts. Automaton has 55127 states and 214513 transitions. Word has length 28 [2021-06-05 06:44:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:07,784 INFO L482 AbstractCegarLoop]: Abstraction has 55127 states and 214513 transitions. [2021-06-05 06:44:07,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:07,784 INFO L276 IsEmpty]: Start isEmpty. Operand 55127 states and 214513 transitions. [2021-06-05 06:44:07,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:07,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:07,876 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:08,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4088 [2021-06-05 06:44:08,077 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1306375610, now seen corresponding path program 169 times [2021-06-05 06:44:08,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:08,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231941162] [2021-06-05 06:44:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:08,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:08,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231941162] [2021-06-05 06:44:08,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231941162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114224453] [2021-06-05 06:44:08,126 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 [2021-06-05 06:44:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:08,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:08,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:08,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114224453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:08,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:08,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685786623] [2021-06-05 06:44:08,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:08,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:08,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:08,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:08,208 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) [2021-06-05 06:44:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:08,710 INFO L93 Difference]: Finished difference Result 61086 states and 233937 transitions. [2021-06-05 06:44:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:44:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:08,862 INFO L225 Difference]: With dead ends: 61086 [2021-06-05 06:44:08,862 INFO L226 Difference]: Without dead ends: 61086 [2021-06-05 06:44:08,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:44:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61086 states. [2021-06-05 06:44:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61086 to 48711. [2021-06-05 06:44:09,937 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) [2021-06-05 06:44:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48711 states to 48711 states and 189013 transitions. [2021-06-05 06:44:10,062 INFO L78 Accepts]: Start accepts. Automaton has 48711 states and 189013 transitions. Word has length 28 [2021-06-05 06:44:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:10,062 INFO L482 AbstractCegarLoop]: Abstraction has 48711 states and 189013 transitions. [2021-06-05 06:44:10,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 48711 states and 189013 transitions. [2021-06-05 06:44:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:10,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:10,128 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:10,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4089 [2021-06-05 06:44:10,328 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:10,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:10,328 INFO L82 PathProgramCache]: Analyzing trace with hash 986257146, now seen corresponding path program 170 times [2021-06-05 06:44:10,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:10,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523229347] [2021-06-05 06:44:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:10,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:10,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523229347] [2021-06-05 06:44:10,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523229347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:10,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286371798] [2021-06-05 06:44:10,362 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 [2021-06-05 06:44:10,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:10,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:10,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:10,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:10,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286371798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:10,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:10,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:10,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104407666] [2021-06-05 06:44:10,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:10,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:10,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:10,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:10,445 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) [2021-06-05 06:44:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:11,165 INFO L93 Difference]: Finished difference Result 53676 states and 205772 transitions. [2021-06-05 06:44:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:44:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:11,294 INFO L225 Difference]: With dead ends: 53676 [2021-06-05 06:44:11,294 INFO L226 Difference]: Without dead ends: 53676 [2021-06-05 06:44:11,294 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 196.8ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:44:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53676 states. [2021-06-05 06:44:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53676 to 49544. [2021-06-05 06:44:12,289 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) [2021-06-05 06:44:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49544 states to 49544 states and 192171 transitions. [2021-06-05 06:44:12,423 INFO L78 Accepts]: Start accepts. Automaton has 49544 states and 192171 transitions. Word has length 28 [2021-06-05 06:44:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:12,423 INFO L482 AbstractCegarLoop]: Abstraction has 49544 states and 192171 transitions. [2021-06-05 06:44:12,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 49544 states and 192171 transitions. [2021-06-05 06:44:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:12,490 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:12,490 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:12,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4090,253 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:12,693 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:12,693 INFO L82 PathProgramCache]: Analyzing trace with hash -22913030, now seen corresponding path program 171 times [2021-06-05 06:44:12,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:12,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609875180] [2021-06-05 06:44:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:12,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:12,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609875180] [2021-06-05 06:44:12,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609875180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939869550] [2021-06-05 06:44:12,732 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 [2021-06-05 06:44:12,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:44:12,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:12,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 06:44:12,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:12,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939869550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:12,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-05 06:44:12,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429429074] [2021-06-05 06:44:12,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:44:12,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:12,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:44:12,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:44:12,850 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) [2021-06-05 06:44:13,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:13,440 INFO L93 Difference]: Finished difference Result 52408 states and 201958 transitions. [2021-06-05 06:44:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:44:13,441 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 [2021-06-05 06:44:13,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:13,567 INFO L225 Difference]: With dead ends: 52408 [2021-06-05 06:44:13,567 INFO L226 Difference]: Without dead ends: 52408 [2021-06-05 06:44:13,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 249.1ms TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:44:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52408 states. [2021-06-05 06:44:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52408 to 49552. [2021-06-05 06:44:14,627 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) [2021-06-05 06:44:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49552 states to 49552 states and 192195 transitions. [2021-06-05 06:44:14,764 INFO L78 Accepts]: Start accepts. Automaton has 49552 states and 192195 transitions. Word has length 28 [2021-06-05 06:44:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:14,764 INFO L482 AbstractCegarLoop]: Abstraction has 49552 states and 192195 transitions. [2021-06-05 06:44:14,764 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) [2021-06-05 06:44:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 49552 states and 192195 transitions. [2021-06-05 06:44:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:15,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:15,102 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:15,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4091,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:15,309 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:15,309 INFO L82 PathProgramCache]: Analyzing trace with hash -120181494, now seen corresponding path program 172 times [2021-06-05 06:44:15,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:15,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97912010] [2021-06-05 06:44:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:15,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97912010] [2021-06-05 06:44:15,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97912010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481325417] [2021-06-05 06:44:15,345 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 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:15,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:15,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:15,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:15,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481325417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:15,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:44:15,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943721802] [2021-06-05 06:44:15,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:15,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:15,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:15,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:15,430 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) [2021-06-05 06:44:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:15,881 INFO L93 Difference]: Finished difference Result 51100 states and 197405 transitions. [2021-06-05 06:44:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:44:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:16,003 INFO L225 Difference]: With dead ends: 51100 [2021-06-05 06:44:16,004 INFO L226 Difference]: Without dead ends: 51100 [2021-06-05 06:44:16,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:44:16,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51100 states. [2021-06-05 06:44:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51100 to 49446. [2021-06-05 06:44:16,968 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) [2021-06-05 06:44:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49446 states to 49446 states and 191771 transitions. [2021-06-05 06:44:17,106 INFO L78 Accepts]: Start accepts. Automaton has 49446 states and 191771 transitions. Word has length 28 [2021-06-05 06:44:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:17,107 INFO L482 AbstractCegarLoop]: Abstraction has 49446 states and 191771 transitions. [2021-06-05 06:44:17,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 49446 states and 191771 transitions. [2021-06-05 06:44:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:44:17,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:17,180 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:17,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4092,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:17,380 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash -915745990, now seen corresponding path program 173 times [2021-06-05 06:44:17,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:17,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106538831] [2021-06-05 06:44:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:17,601 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-06-05 06:44:17,749 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-06-05 06:44:17,889 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-06-05 06:44:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:18,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:18,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106538831] [2021-06-05 06:44:18,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106538831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:18,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264213371] [2021-06-05 06:44:18,258 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 [2021-06-05 06:44:18,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:44:18,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:18,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 06:44:18,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:18,835 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 06:44:19,063 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:44:19,615 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2021-06-05 06:44:19,846 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:44:20,059 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:44:20,298 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]} [2021-06-05 06:44:20,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:20,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:20,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:20,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:20,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-06-05 06:44:20,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:20,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:20,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:20,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:20,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:20,324 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:20,942 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 143 [2021-06-05 06:44:20,943 INFO L628 ElimStorePlain]: treesize reduction 280, result has 60.3 percent of original size [2021-06-05 06:44:20,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:20,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:20,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:20,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:20,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:20,953 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,145 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-05 06:44:21,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:21,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:21,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:21,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:21,158 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:21,167 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,333 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:44:21,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:21,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:21,345 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:21,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:44:21,354 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,494 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:44:21,494 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:21,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:21,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:21,503 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,635 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:44:21,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:21,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:21,644 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,766 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 06:44:21,767 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:21,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:21,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,774 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:21,776 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:21,891 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:44:21,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:21,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:21,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 [2021-06-05 06:44:21,900 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:22,009 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:44:22,010 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:22,015 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 06:44:22,015 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 24 variables, input treesize:757, output treesize:114 [2021-06-05 06:44:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:22,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264213371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:22,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:22,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:44:22,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676079594] [2021-06-05 06:44:22,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:44:22,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:22,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:44:22,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:44:22,109 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) [2021-06-05 06:44:22,525 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2021-06-05 06:44:22,887 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2021-06-05 06:44:23,505 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 79 [2021-06-05 06:44:23,835 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 66 [2021-06-05 06:44:24,190 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2021-06-05 06:44:24,738 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2021-06-05 06:44:25,350 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 84 [2021-06-05 06:44:25,603 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2021-06-05 06:44:25,785 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-05 06:44:26,312 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 96 [2021-06-05 06:44:26,777 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2021-06-05 06:44:27,264 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 112 [2021-06-05 06:44:28,302 WARN L205 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 153 [2021-06-05 06:44:28,732 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 06:44:29,135 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 102 [2021-06-05 06:44:29,505 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2021-06-05 06:44:29,982 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2021-06-05 06:44:30,345 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2021-06-05 06:44:30,670 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 56 [2021-06-05 06:44:31,099 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 46 [2021-06-05 06:44:31,271 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 42 [2021-06-05 06:44:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:31,487 INFO L93 Difference]: Finished difference Result 57718 states and 215952 transitions. [2021-06-05 06:44:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:44:31,488 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:44:31,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:31,621 INFO L225 Difference]: With dead ends: 57718 [2021-06-05 06:44:31,621 INFO L226 Difference]: Without dead ends: 57628 [2021-06-05 06:44:31,622 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 10349.5ms TimeCoverageRelationStatistics Valid=458, Invalid=1992, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:44:31,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57628 states. [2021-06-05 06:44:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57628 to 49581. [2021-06-05 06:44:32,532 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) [2021-06-05 06:44:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49581 states to 49581 states and 192256 transitions. [2021-06-05 06:44:32,667 INFO L78 Accepts]: Start accepts. Automaton has 49581 states and 192256 transitions. Word has length 30 [2021-06-05 06:44:32,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:32,667 INFO L482 AbstractCegarLoop]: Abstraction has 49581 states and 192256 transitions. [2021-06-05 06:44:32,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 49581 states and 192256 transitions. [2021-06-05 06:44:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:44:32,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:32,736 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:32,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4093,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:32,937 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:32,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1350823290, now seen corresponding path program 174 times [2021-06-05 06:44:32,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:32,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870563214] [2021-06-05 06:44:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:33,259 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-06-05 06:44:33,433 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-05 06:44:33,751 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 06:44:33,872 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 06:44:33,998 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-05 06:44:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:34,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:34,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870563214] [2021-06-05 06:44:34,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870563214] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:34,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293813054] [2021-06-05 06:44:34,097 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 [2021-06-05 06:44:34,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:34,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:34,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 06:44:34,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:34,479 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 06:44:34,720 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:44:35,254 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2021-06-05 06:44:35,478 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:44:36,296 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 131 [2021-06-05 06:44:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:36,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:36,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:36,391 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:36,809 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 155 [2021-06-05 06:44:36,810 INFO L628 ElimStorePlain]: treesize reduction 86, result has 82.7 percent of original size [2021-06-05 06:44:36,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:36,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:36,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:36,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:44:36,819 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:36,990 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-05 06:44:36,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:36,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:36,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:37,001 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,169 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-05 06:44:37,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:37,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:37,178 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,334 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 06:44:37,334 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:37,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:44:37,343 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,488 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:44:37,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:37,498 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,634 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 06:44:37,634 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:37,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:37,643 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,772 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:44:37,773 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:37,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:37,781 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,899 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 06:44:37,899 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:37,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:44:37,911 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:37,919 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:38,020 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:44:38,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:38,025 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 9 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 06:44:38,025 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 27 variables, input treesize:525, output treesize:114 [2021-06-05 06:44:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:38,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293813054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:38,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:38,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:44:38,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244685118] [2021-06-05 06:44:38,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:44:38,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:38,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:44:38,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:44:38,129 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) [2021-06-05 06:44:38,590 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 44 [2021-06-05 06:44:39,108 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 06:44:39,419 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2021-06-05 06:44:39,687 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2021-06-05 06:44:40,583 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 89 [2021-06-05 06:44:41,293 WARN L205 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-06-05 06:44:41,443 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-06-05 06:44:42,246 WARN L205 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 93 [2021-06-05 06:44:42,603 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:44:43,097 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 102 [2021-06-05 06:44:43,314 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-06-05 06:44:43,633 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-05 06:44:43,989 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2021-06-05 06:44:44,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:44,369 INFO L93 Difference]: Finished difference Result 52816 states and 201749 transitions. [2021-06-05 06:44:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:44:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:44:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:44,491 INFO L225 Difference]: With dead ends: 52816 [2021-06-05 06:44:44,491 INFO L226 Difference]: Without dead ends: 52771 [2021-06-05 06:44:44,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 7820.4ms TimeCoverageRelationStatistics Valid=322, Invalid=1748, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:44:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52771 states. [2021-06-05 06:44:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52771 to 49618. [2021-06-05 06:44:45,317 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) [2021-06-05 06:44:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49618 states to 49618 states and 192383 transitions. [2021-06-05 06:44:45,453 INFO L78 Accepts]: Start accepts. Automaton has 49618 states and 192383 transitions. Word has length 30 [2021-06-05 06:44:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:45,453 INFO L482 AbstractCegarLoop]: Abstraction has 49618 states and 192383 transitions. [2021-06-05 06:44:45,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 49618 states and 192383 transitions. [2021-06-05 06:44:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:44:45,524 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:45,524 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:45,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4134 [2021-06-05 06:44:45,725 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1352714698, now seen corresponding path program 175 times [2021-06-05 06:44:45,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:45,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619696984] [2021-06-05 06:44:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:46,289 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2021-06-05 06:44:46,575 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2021-06-05 06:44:46,977 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-06-05 06:44:47,234 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2021-06-05 06:44:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:47,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:47,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619696984] [2021-06-05 06:44:47,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619696984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:47,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613824877] [2021-06-05 06:44:47,367 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 [2021-06-05 06:44:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:47,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:44:47,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:48,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:48,703 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:44:48,717 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,729 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 51 treesize of output 25 [2021-06-05 06:44:48,730 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 06:44:48,745 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:44:48,760 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:44:48,775 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:44:48,790 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 06:44:48,805 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:44:48,819 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:48,833 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:44:48,849 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:44:48,864 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,877 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 53 treesize of output 25 [2021-06-05 06:44:48,878 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,891 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 47 treesize of output 25 [2021-06-05 06:44:48,892 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 06:44:48,907 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:48,921 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:44:48,935 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:44:48,949 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:44:48,963 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:44:48,978 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:44:48,993 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:49,007 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:44:49,022 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:44:49,036 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:44:49,051 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 06:44:49,067 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:44:49,082 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:44:49,096 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:44:49,111 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:49,126 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:44:49,139 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:44:49,154 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,181 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 56 treesize of output 25 [2021-06-05 06:44:49,182 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:49,197 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:49,212 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 06:44:49,232 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,248 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 42 treesize of output 22 [2021-06-05 06:44:49,249 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,264 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 39 treesize of output 19 [2021-06-05 06:44:49,265 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:44:49,282 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:44:49,299 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:44:49,317 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,334 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 47 treesize of output 25 [2021-06-05 06:44:49,335 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:44:49,352 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:44:49,370 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:44:49,388 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:44:49,404 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:44:49,421 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:44:49,435 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:44:49,449 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:44:49,463 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:44:49,476 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:49,490 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,516 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 51 treesize of output 22 [2021-06-05 06:44:49,517 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 06:44:49,535 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:44:49,553 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:49,570 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:44:49,586 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,602 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 53 treesize of output 25 [2021-06-05 06:44:49,602 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:44:49,618 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:44:49,634 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:44:49,648 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:44:49,663 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:49,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:49,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:44:49,671 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:49,774 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2021-06-05 06:44:49,775 INFO L628 ElimStorePlain]: treesize reduction 179, result has 29.5 percent of original size [2021-06-05 06:44:49,776 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 06:44:49,776 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 06:44:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:49,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613824877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:49,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:49,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:44:49,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956248104] [2021-06-05 06:44:49,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:44:49,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:49,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:44:49,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:44:49,838 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) [2021-06-05 06:44:51,107 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 81 [2021-06-05 06:44:51,525 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 73 [2021-06-05 06:44:52,013 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 80 [2021-06-05 06:44:52,716 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 81 [2021-06-05 06:44:53,206 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 106 [2021-06-05 06:44:53,513 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 89 [2021-06-05 06:44:53,709 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:44:53,978 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 85 [2021-06-05 06:44:54,170 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-05 06:44:54,539 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 81 [2021-06-05 06:44:54,711 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-06-05 06:44:55,128 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 88 [2021-06-05 06:44:55,363 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-06-05 06:44:55,724 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 84 [2021-06-05 06:44:55,978 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 84 [2021-06-05 06:44:56,418 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 99 [2021-06-05 06:44:56,684 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 06:44:56,880 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2021-06-05 06:44:57,214 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 06:44:57,575 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 85 [2021-06-05 06:44:57,767 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-06-05 06:44:58,159 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-06-05 06:44:58,402 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 70 [2021-06-05 06:44:58,711 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2021-06-05 06:44:58,984 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-06-05 06:44:59,283 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-06-05 06:44:59,590 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 06:44:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:59,998 INFO L93 Difference]: Finished difference Result 70379 states and 263440 transitions. [2021-06-05 06:44:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 06:44:59,999 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:44:59,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:00,159 INFO L225 Difference]: With dead ends: 70379 [2021-06-05 06:45:00,159 INFO L226 Difference]: Without dead ends: 70349 [2021-06-05 06:45:00,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 10458.8ms TimeCoverageRelationStatistics Valid=537, Invalid=3623, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:45:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70349 states. [2021-06-05 06:45:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70349 to 49657. [2021-06-05 06:45:01,124 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) [2021-06-05 06:45:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49657 states to 49657 states and 192521 transitions. [2021-06-05 06:45:01,262 INFO L78 Accepts]: Start accepts. Automaton has 49657 states and 192521 transitions. Word has length 30 [2021-06-05 06:45:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:01,262 INFO L482 AbstractCegarLoop]: Abstraction has 49657 states and 192521 transitions. [2021-06-05 06:45:01,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 49657 states and 192521 transitions. [2021-06-05 06:45:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:45:01,332 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:01,332 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:01,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4171,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:01,541 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash -547667522, now seen corresponding path program 176 times [2021-06-05 06:45:01,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:01,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452302052] [2021-06-05 06:45:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:01,772 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-06-05 06:45:02,112 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 06:45:02,294 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-05 06:45:02,435 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-06-05 06:45:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:02,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:02,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452302052] [2021-06-05 06:45:02,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452302052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:02,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791545126] [2021-06-05 06:45:02,598 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 [2021-06-05 06:45:02,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:02,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:02,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 06:45:02,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:02,967 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-05 06:45:03,168 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:45:03,654 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-05 06:45:04,149 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 06:45:04,500 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:04,501 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 62 [2021-06-05 06:45:04,515 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:05,539 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 347 DAG size of output: 338 [2021-06-05 06:45:05,540 INFO L628 ElimStorePlain]: treesize reduction 28, result has 96.9 percent of original size [2021-06-05 06:45:05,592 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:05,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2021-06-05 06:45:05,611 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:06,032 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2021-06-05 06:45:06,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:06,092 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:45:06,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:45:06,096 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:06,516 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2021-06-05 06:45:06,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:06,576 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:45:06,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:45:06,580 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:07,019 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2021-06-05 06:45:07,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:07,081 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:45:07,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 50 [2021-06-05 06:45:07,083 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:07,486 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2021-06-05 06:45:07,486 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:07,546 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:45:07,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 43 [2021-06-05 06:45:07,548 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:07,966 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2021-06-05 06:45:07,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,031 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:45:08,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 54 [2021-06-05 06:45:08,033 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,451 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2021-06-05 06:45:08,451 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,516 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:45:08,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:45:08,536 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:09,357 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 318 [2021-06-05 06:45:09,358 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.9 percent of original size [2021-06-05 06:45:09,425 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:45:09,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 58 [2021-06-05 06:45:09,434 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:10,256 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 315 [2021-06-05 06:45:10,257 INFO L628 ElimStorePlain]: treesize reduction 24, result has 97.1 percent of original size [2021-06-05 06:45:10,322 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:45:10,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:45:10,332 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:11,155 WARN L205 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 309 [2021-06-05 06:45:11,156 INFO L628 ElimStorePlain]: treesize reduction 32, result has 96.1 percent of original size [2021-06-05 06:45:11,217 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:45:11,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 54 [2021-06-05 06:45:11,220 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:11,627 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2021-06-05 06:45:11,627 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:11,692 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:45:11,692 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 06:45:11,710 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,492 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 301 [2021-06-05 06:45:12,493 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.8 percent of original size [2021-06-05 06:45:12,545 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-05 06:45:12,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-05 06:45:12,546 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,943 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2021-06-05 06:45:12,944 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:12,989 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:12,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 62 [2021-06-05 06:45:13,000 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:13,780 WARN L205 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 297 [2021-06-05 06:45:13,781 INFO L628 ElimStorePlain]: treesize reduction 25, result has 96.8 percent of original size [2021-06-05 06:45:13,837 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:45:13,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:45:13,844 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:14,224 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2021-06-05 06:45:14,224 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:14,278 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:45:14,278 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 26 treesize of output 44 [2021-06-05 06:45:14,282 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:14,666 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2021-06-05 06:45:14,666 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:14,769 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-06-05 06:45:14,769 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 48 variables, input treesize:877, output treesize:1238 [2021-06-05 06:45:15,333 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 48 [2021-06-05 06:45:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:15,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791545126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:15,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:15,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-05 06:45:15,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344684982] [2021-06-05 06:45:15,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:45:15,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:45:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:45:15,455 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) [2021-06-05 06:45:15,650 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36 [2021-06-05 06:45:16,015 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 47 [2021-06-05 06:45:16,626 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 86 [2021-06-05 06:45:17,059 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2021-06-05 06:45:17,244 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2021-06-05 06:45:17,585 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2021-06-05 06:45:17,894 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 57 [2021-06-05 06:45:18,177 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 55 [2021-06-05 06:45:18,594 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2021-06-05 06:45:19,096 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 89 [2021-06-05 06:45:19,405 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 56 [2021-06-05 06:45:19,574 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 06:45:19,776 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 58 [2021-06-05 06:45:20,623 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 113 [2021-06-05 06:45:21,371 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 76 [2021-06-05 06:45:21,787 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 89 [2021-06-05 06:45:22,741 WARN L205 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 103 [2021-06-05 06:45:23,150 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2021-06-05 06:45:24,011 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 153 [2021-06-05 06:45:24,266 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 74 [2021-06-05 06:45:24,627 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-06-05 06:45:25,579 WARN L205 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 157 [2021-06-05 06:45:26,388 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 141 [2021-06-05 06:45:27,036 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2021-06-05 06:45:27,405 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2021-06-05 06:45:28,295 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2021-06-05 06:45:28,887 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2021-06-05 06:45:29,790 WARN L205 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 120 [2021-06-05 06:45:31,337 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 215 DAG size of output: 160 [2021-06-05 06:45:31,733 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2021-06-05 06:45:32,242 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 59 [2021-06-05 06:45:32,680 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2021-06-05 06:45:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:32,891 INFO L93 Difference]: Finished difference Result 63922 states and 240994 transitions. [2021-06-05 06:45:32,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:45:32,891 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:45:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:33,043 INFO L225 Difference]: With dead ends: 63922 [2021-06-05 06:45:33,043 INFO L226 Difference]: Without dead ends: 63892 [2021-06-05 06:45:33,043 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 18654.9ms TimeCoverageRelationStatistics Valid=636, Invalid=3524, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:45:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63892 states. [2021-06-05 06:45:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63892 to 49681. [2021-06-05 06:45:34,115 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) [2021-06-05 06:45:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49681 states to 49681 states and 192603 transitions. [2021-06-05 06:45:34,270 INFO L78 Accepts]: Start accepts. Automaton has 49681 states and 192603 transitions. Word has length 30 [2021-06-05 06:45:34,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:34,270 INFO L482 AbstractCegarLoop]: Abstraction has 49681 states and 192603 transitions. [2021-06-05 06:45:34,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 49681 states and 192603 transitions. [2021-06-05 06:45:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:45:34,341 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:34,341 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:34,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4432,259 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:34,542 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:34,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:34,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1002714042, now seen corresponding path program 177 times [2021-06-05 06:45:34,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:34,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632620390] [2021-06-05 06:45:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:35,017 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-06-05 06:45:35,290 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-06-05 06:45:35,581 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-06-05 06:45:35,767 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-05 06:45:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:35,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:35,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632620390] [2021-06-05 06:45:35,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632620390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:35,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565333012] [2021-06-05 06:45:35,972 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 [2021-06-05 06:45:36,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:45:36,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:36,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 06:45:36,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:36,363 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 06:45:36,589 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 06:45:36,911 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:45:37,400 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-05 06:45:38,042 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:45:38,591 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 185 [2021-06-05 06:45:39,034 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-06-05 06:45:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,373 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-05 06:45:39,373 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 64 [2021-06-05 06:45:39,383 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,468 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:39,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-05 06:45:39,469 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,541 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:45:39,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-06-05 06:45:39,543 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,611 INFO L354 Elim1Store]: treesize reduction 12, result has 76.5 percent of original size [2021-06-05 06:45:39,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 [2021-06-05 06:45:39,622 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,712 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-05 06:45:39,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 [2021-06-05 06:45:39,720 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,802 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:39,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 [2021-06-05 06:45:39,805 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,883 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:45:39,883 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 [2021-06-05 06:45:39,884 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:39,963 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:45:39,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 49 [2021-06-05 06:45:39,965 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:39,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:40,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:40,054 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:40,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 53 [2021-06-05 06:45:40,059 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:40,129 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:40,129 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 56 [2021-06-05 06:45:40,131 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:41,937 WARN L205 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 354 DAG size of output: 326 [2021-06-05 06:45:41,938 INFO L628 ElimStorePlain]: treesize reduction 97, result has 91.9 percent of original size [2021-06-05 06:45:41,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:41,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:41,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,006 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:42,006 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 [2021-06-05 06:45:42,021 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,090 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:42,090 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 [2021-06-05 06:45:42,106 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,182 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:42,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 53 [2021-06-05 06:45:42,188 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,281 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:42,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 [2021-06-05 06:45:42,285 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,371 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:42,371 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 [2021-06-05 06:45:42,375 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,443 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:45:42,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 50 [2021-06-05 06:45:42,452 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:42,506 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:42,506 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 [2021-06-05 06:45:42,528 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:42,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 63 [2021-06-05 06:45:42,609 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,678 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:45:42,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-06-05 06:45:42,682 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:42,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:42,750 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-05 06:45:42,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 61 [2021-06-05 06:45:42,769 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:43,897 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 377 DAG size of output: 294 [2021-06-05 06:45:43,898 INFO L628 ElimStorePlain]: treesize reduction 250, result has 78.3 percent of original size [2021-06-05 06:45:43,954 INFO L550 ElimStorePlain]: Start of recursive call 1: 36 dim-0 vars, 2 dim-1 vars, End of recursive call: and 20 xjuncts. [2021-06-05 06:45:43,954 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 38 variables, input treesize:1193, output treesize:1265 [2021-06-05 06:45:44,539 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2021-06-05 06:45:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:44,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565333012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:44,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:44,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-05 06:45:44,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070220669] [2021-06-05 06:45:44,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 06:45:44,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:44,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 06:45:44,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:45:44,628 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) [2021-06-05 06:45:45,810 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-05 06:45:46,293 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-06-05 06:45:47,123 WARN L205 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 94 [2021-06-05 06:45:47,871 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 73 [2021-06-05 06:45:48,158 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2021-06-05 06:45:49,069 WARN L205 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 91 [2021-06-05 06:45:49,727 WARN L205 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 141 [2021-06-05 06:45:49,965 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 48 [2021-06-05 06:45:50,119 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2021-06-05 06:45:50,290 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 53 [2021-06-05 06:45:51,179 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 105 [2021-06-05 06:45:51,449 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:45:52,136 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 97 [2021-06-05 06:45:52,497 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2021-06-05 06:45:53,607 WARN L205 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 102 [2021-06-05 06:45:54,344 WARN L205 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 140 [2021-06-05 06:45:55,156 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 152 [2021-06-05 06:45:55,460 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-06-05 06:45:56,389 WARN L205 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 94 [2021-06-05 06:45:57,122 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 144 [2021-06-05 06:45:57,909 WARN L205 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 148 [2021-06-05 06:45:58,614 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2021-06-05 06:45:59,089 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 111 [2021-06-05 06:45:59,312 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-06-05 06:45:59,552 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:46:00,533 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 116 [2021-06-05 06:46:01,325 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 143 [2021-06-05 06:46:02,366 WARN L205 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 147 [2021-06-05 06:46:02,785 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 96 [2021-06-05 06:46:03,328 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 122 [2021-06-05 06:46:03,605 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-06-05 06:46:04,133 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 115 [2021-06-05 06:46:05,314 WARN L205 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2021-06-05 06:46:06,303 WARN L205 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2021-06-05 06:46:07,040 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 140 [2021-06-05 06:46:07,780 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 132 [2021-06-05 06:46:08,795 WARN L205 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 141 [2021-06-05 06:46:09,139 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 31 [2021-06-05 06:46:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:09,384 INFO L93 Difference]: Finished difference Result 70546 states and 263970 transitions. [2021-06-05 06:46:09,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:46:09,385 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:46:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:09,566 INFO L225 Difference]: With dead ends: 70546 [2021-06-05 06:46:09,566 INFO L226 Difference]: Without dead ends: 70516 [2021-06-05 06:46:09,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 25853.3ms TimeCoverageRelationStatistics Valid=706, Invalid=5456, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 06:46:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70516 states. [2021-06-05 06:46:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70516 to 49693. [2021-06-05 06:46:10,606 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) [2021-06-05 06:46:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49693 states to 49693 states and 192653 transitions. [2021-06-05 06:46:10,748 INFO L78 Accepts]: Start accepts. Automaton has 49693 states and 192653 transitions. Word has length 30 [2021-06-05 06:46:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:10,748 INFO L482 AbstractCegarLoop]: Abstraction has 49693 states and 192653 transitions. [2021-06-05 06:46:10,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 49693 states and 192653 transitions. [2021-06-05 06:46:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:46:10,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:10,821 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:11,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 260 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4574 [2021-06-05 06:46:11,021 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash 26395198, now seen corresponding path program 178 times [2021-06-05 06:46:11,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:11,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238141364] [2021-06-05 06:46:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:11,648 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-06-05 06:46:11,833 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-06-05 06:46:11,957 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2021-06-05 06:46:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:12,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:12,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238141364] [2021-06-05 06:46:12,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238141364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:12,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761938753] [2021-06-05 06:46:12,164 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 [2021-06-05 06:46:12,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:12,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:12,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:46:12,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:46:13,390 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:13,404 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:46:13,417 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:13,431 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:46:13,446 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:46:13,459 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:46:13,475 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:46:13,488 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:13,503 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:46:13,518 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:46:13,532 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:46:13,547 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:46:13,562 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:13,579 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:46:13,593 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:46:13,608 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:46:13,624 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:46:13,639 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:46:13,655 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,671 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 [2021-06-05 06:46:13,673 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 06:46:13,689 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:46:13,705 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:46:13,720 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:46:13,735 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:46:13,749 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:46:13,762 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 06:46:13,776 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:46:13,790 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 25 [2021-06-05 06:46:13,805 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 06:46:13,821 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 06:46:13,836 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:13,849 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:46:13,864 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,877 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 35 treesize of output 19 [2021-06-05 06:46:13,878 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:46:13,892 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:46:13,905 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:46:13,921 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:46:13,935 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:46:13,948 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:46:13,963 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:13,977 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 06:46:13,991 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:13,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:13,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:13,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,004 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 42 treesize of output 22 [2021-06-05 06:46:14,005 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:46:14,033 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:46:14,048 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:46:14,063 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:46:14,076 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:46:14,089 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:46:14,103 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:46:14,116 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:14,129 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:46:14,142 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:14,154 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:46:14,167 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:46:14,180 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:46:14,193 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:46:14,207 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:46:14,219 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 06:46:14,231 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:46:14,244 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:46:14,255 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:46:14,266 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:14,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:14,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:46:14,273 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:14,362 INFO L628 ElimStorePlain]: treesize reduction 179, result has 29.5 percent of original size [2021-06-05 06:46:14,364 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 06:46:14,364 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 06:46:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:14,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761938753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:14,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:14,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-05 06:46:14,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912698707] [2021-06-05 06:46:14,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:46:14,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:14,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:46:14,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:46:14,432 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) [2021-06-05 06:46:14,677 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2021-06-05 06:46:15,328 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2021-06-05 06:46:15,472 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 46 [2021-06-05 06:46:16,013 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2021-06-05 06:46:16,334 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2021-06-05 06:46:16,953 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 85 [2021-06-05 06:46:17,105 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:46:17,607 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2021-06-05 06:46:18,209 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2021-06-05 06:46:18,668 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2021-06-05 06:46:19,216 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 86 [2021-06-05 06:46:19,397 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 06:46:20,096 WARN L205 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-05 06:46:20,723 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 98 [2021-06-05 06:46:21,086 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2021-06-05 06:46:21,450 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 78 [2021-06-05 06:46:22,208 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 113 [2021-06-05 06:46:22,808 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2021-06-05 06:46:23,164 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2021-06-05 06:46:23,650 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 97 [2021-06-05 06:46:23,911 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-06-05 06:46:24,490 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 116 [2021-06-05 06:46:24,669 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2021-06-05 06:46:25,123 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2021-06-05 06:46:25,857 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 108 [2021-06-05 06:46:26,483 WARN L205 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2021-06-05 06:46:27,194 WARN L205 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2021-06-05 06:46:27,825 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 107 [2021-06-05 06:46:28,024 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:46:28,283 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2021-06-05 06:46:28,627 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 72 [2021-06-05 06:46:29,118 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2021-06-05 06:46:29,896 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 110 [2021-06-05 06:46:30,757 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 114 [2021-06-05 06:46:30,925 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:46:31,152 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2021-06-05 06:46:31,299 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 Received shutdown request... [2021-06-05 06:46:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:46:31,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4715 [2021-06-05 06:46:31,535 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 06:46:31,537 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 06:46:31,538 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 06:46:31,538 INFO L202 PluginConnector]: Adding new model max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:46:31 BasicIcfg [2021-06-05 06:46:31,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 06:46:31,539 INFO L168 Benchmark]: Toolchain (without parser) took 791691.59 ms. Allocated memory was 381.7 MB in the beginning and 15.9 GB in the end (delta: 15.5 GB). Free memory was 361.6 MB in the beginning and 7.2 GB in the end (delta: -6.9 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. [2021-06-05 06:46:31,539 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 381.7 MB. Free memory was 362.8 MB in the beginning and 362.7 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:46:31,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.21 ms. Allocated memory is still 381.7 MB. Free memory was 361.5 MB in the beginning and 360.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:46:31,539 INFO L168 Benchmark]: Boogie Preprocessor took 10.35 ms. Allocated memory is still 381.7 MB. Free memory was 360.0 MB in the beginning and 359.1 MB in the end (delta: 977.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:46:31,539 INFO L168 Benchmark]: RCFGBuilder took 224.09 ms. Allocated memory is still 381.7 MB. Free memory was 358.9 MB in the beginning and 346.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 06:46:31,539 INFO L168 Benchmark]: TraceAbstraction took 791434.79 ms. Allocated memory was 381.7 MB in the beginning and 15.9 GB in the end (delta: 15.5 GB). Free memory was 345.5 MB in the beginning and 7.2 GB in the end (delta: -6.9 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. [2021-06-05 06:46:31,539 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 0.13 ms. Allocated memory is still 381.7 MB. Free memory was 362.8 MB in the beginning and 362.7 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.21 ms. Allocated memory is still 381.7 MB. Free memory was 361.5 MB in the beginning and 360.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.35 ms. Allocated memory is still 381.7 MB. Free memory was 360.0 MB in the beginning and 359.1 MB in the end (delta: 977.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 224.09 ms. Allocated memory is still 381.7 MB. Free memory was 358.9 MB in the beginning and 346.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 791434.79 ms. Allocated memory was 381.7 MB in the beginning and 15.9 GB in the end (delta: 15.5 GB). Free memory was 345.5 MB in the beginning and 7.2 GB in the end (delta: -6.9 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (49693states) and FLOYD_HOARE automaton (currently 66 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 76 known predicates. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (49693states) and FLOYD_HOARE automaton (currently 66 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 76 known predicates. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (49693states) and FLOYD_HOARE automaton (currently 66 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 76 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (49693states) and FLOYD_HOARE automaton (currently 66 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 76 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 791335.9ms, OverallIterations: 263, TraceHistogramMax: 3, EmptinessCheckTime: 5501.2ms, AutomataDifference: 427977.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11760 SDtfs, 74031 SDslu, 91945 SDs, 0 SdLazy, 147344 SolverSat, 13387 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77784.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16973 GetRequests, 5536 SyntacticMatches, 248 SemanticMatches, 11188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189801 ImplicationChecksByTransitivity, 388308.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55127occurred in iteration=253, InterpolantAutomatonStates: 9852, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 87023.8ms AutomataMinimizationTime, 262 MinimizatonAttempts, 1373263 StatesRemovedByMinimization, 262 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 759.5ms SsaConstructionTime, 2689.1ms SatisfiabilityAnalysisTime, 209686.5ms InterpolantComputationTime, 13986 NumberOfCodeBlocks, 13986 NumberOfCodeBlocksAsserted, 908 NumberOfCheckSat, 13463 ConstructedInterpolants, 189 QuantifiedInterpolants, 286874 SizeOfPredicates, 1167 NumberOfNonLiveVariables, 18190 ConjunctsInSsa, 3961 ConjunctsInUnsatCore, 523 InterpolantComputations, 3 PerfectInterpolantSequences, 1026/4462 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