/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:38:40,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:38:40,893 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:38:40,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:38:40,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:38:40,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:38:40,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:38:40,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:38:40,931 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:38:40,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:38:40,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:38:40,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:38:40,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:38:40,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:38:40,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:38:40,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:38:40,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:38:40,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:38:40,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:38:40,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:38:40,937 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:38:40,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:38:40,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:38:40,938 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:38:40,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:38:40,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:38:40,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:38:40,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:38:40,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:38:40,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:38:40,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:38:40,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:38:40,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:38:40,941 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:38:41,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:38:41,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:38:41,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:38:41,185 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:38:41,186 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:38:41,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-12-09 15:38:42,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:38:42,483 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:38:42,484 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-12-09 15:38:42,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c5450b6/e2356f859204489185646f3ff935195d/FLAG687a8f182 [2023-12-09 15:38:42,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c5450b6/e2356f859204489185646f3ff935195d [2023-12-09 15:38:42,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:38:42,508 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:38:42,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:38:42,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:38:42,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:38:42,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1312675e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42, skipping insertion in model container [2023-12-09 15:38:42,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:38:42,688 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c[2500,2513] [2023-12-09 15:38:42,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:38:42,713 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:38:42,730 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c[2500,2513] [2023-12-09 15:38:42,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:38:42,745 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:38:42,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42 WrapperNode [2023-12-09 15:38:42,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:38:42,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:38:42,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:38:42,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:38:42,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,759 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,780 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 146 [2023-12-09 15:38:42,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:38:42,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:38:42,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:38:42,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:38:42,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:38:42,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:38:42,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:38:42,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:38:42,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (1/1) ... [2023-12-09 15:38:42,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:38:42,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:42,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:38:42,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:38:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:38:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:38:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:38:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:38:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:38:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:38:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:38:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:38:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:38:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:38:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:38:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:38:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:38:42,895 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:38:43,012 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:38:43,014 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:38:43,296 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:38:43,306 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:38:43,306 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 15:38:43,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:38:43 BoogieIcfgContainer [2023-12-09 15:38:43,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:38:43,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:38:43,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:38:43,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:38:43,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:38:42" (1/3) ... [2023-12-09 15:38:43,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33989d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:38:43, skipping insertion in model container [2023-12-09 15:38:43,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:42" (2/3) ... [2023-12-09 15:38:43,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33989d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:38:43, skipping insertion in model container [2023-12-09 15:38:43,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:38:43" (3/3) ... [2023-12-09 15:38:43,316 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2023-12-09 15:38:43,328 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:38:43,328 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:38:43,328 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:38:43,405 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:38:43,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 181 transitions, 376 flow [2023-12-09 15:38:43,540 INFO L124 PetriNetUnfolderBase]: 15/179 cut-off events. [2023-12-09 15:38:43,540 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:38:43,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 179 events. 15/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 230 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-12-09 15:38:43,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 181 transitions, 376 flow [2023-12-09 15:38:43,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 170 transitions, 352 flow [2023-12-09 15:38:43,569 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:38:43,574 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5cce3c19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:38:43,574 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:38:43,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:38:43,607 INFO L124 PetriNetUnfolderBase]: 14/167 cut-off events. [2023-12-09 15:38:43,607 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:38:43,607 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:43,608 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:43,608 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:43,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 3203303, now seen corresponding path program 1 times [2023-12-09 15:38:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461413106] [2023-12-09 15:38:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:43,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:44,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461413106] [2023-12-09 15:38:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461413106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:38:44,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:38:44,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:38:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524061738] [2023-12-09 15:38:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:38:44,353 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:38:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:38:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:38:44,398 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 181 [2023-12-09 15:38:44,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 170 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:44,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:44,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 181 [2023-12-09 15:38:44,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:44,603 INFO L124 PetriNetUnfolderBase]: 106/575 cut-off events. [2023-12-09 15:38:44,603 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-12-09 15:38:44,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 575 events. 106/575 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2689 event pairs, 32 based on Foata normal form. 43/523 useless extension candidates. Maximal degree in co-relation 664. Up to 115 conditions per place. [2023-12-09 15:38:44,613 INFO L140 encePairwiseOnDemand]: 164/181 looper letters, 30 selfloop transitions, 6 changer transitions 4/176 dead transitions. [2023-12-09 15:38:44,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 176 transitions, 442 flow [2023-12-09 15:38:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:38:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:38:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 657 transitions. [2023-12-09 15:38:44,631 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9074585635359116 [2023-12-09 15:38:44,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 657 transitions. [2023-12-09 15:38:44,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 657 transitions. [2023-12-09 15:38:44,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:44,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 657 transitions. [2023-12-09 15:38:44,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.25) internal successors, (657), 4 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:44,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:44,648 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:44,652 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 3 predicate places. [2023-12-09 15:38:44,652 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 176 transitions, 442 flow [2023-12-09 15:38:44,653 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:44,653 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:44,653 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:44,654 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:38:44,654 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:44,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1151540723, now seen corresponding path program 1 times [2023-12-09 15:38:44,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:44,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227161818] [2023-12-09 15:38:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:44,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:45,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227161818] [2023-12-09 15:38:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227161818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:38:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:38:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:38:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434544572] [2023-12-09 15:38:45,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:38:45,064 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:38:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:38:45,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:38:45,069 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2023-12-09 15:38:45,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 176 transitions, 442 flow. Second operand has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:45,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2023-12-09 15:38:45,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:45,316 INFO L124 PetriNetUnfolderBase]: 202/1027 cut-off events. [2023-12-09 15:38:45,317 INFO L125 PetriNetUnfolderBase]: For 252/289 co-relation queries the response was YES. [2023-12-09 15:38:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 1027 events. 202/1027 cut-off events. For 252/289 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6331 event pairs, 31 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 1589. Up to 196 conditions per place. [2023-12-09 15:38:45,326 INFO L140 encePairwiseOnDemand]: 172/181 looper letters, 64 selfloop transitions, 17 changer transitions 4/218 dead transitions. [2023-12-09 15:38:45,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 218 transitions, 765 flow [2023-12-09 15:38:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:38:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:38:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1252 transitions. [2023-12-09 15:38:45,331 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8646408839779005 [2023-12-09 15:38:45,331 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1252 transitions. [2023-12-09 15:38:45,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1252 transitions. [2023-12-09 15:38:45,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:45,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1252 transitions. [2023-12-09 15:38:45,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,339 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,339 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 10 predicate places. [2023-12-09 15:38:45,340 INFO L500 AbstractCegarLoop]: Abstraction has has 172 places, 218 transitions, 765 flow [2023-12-09 15:38:45,340 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,340 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:45,341 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:45,341 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:38:45,342 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:45,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1448699705, now seen corresponding path program 2 times [2023-12-09 15:38:45,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:45,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328875524] [2023-12-09 15:38:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:45,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:45,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328875524] [2023-12-09 15:38:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328875524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:38:45,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:38:45,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:38:45,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186783616] [2023-12-09 15:38:45,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:38:45,606 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:38:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:38:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:38:45,609 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2023-12-09 15:38:45,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 218 transitions, 765 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:45,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2023-12-09 15:38:45,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:45,866 INFO L124 PetriNetUnfolderBase]: 251/1342 cut-off events. [2023-12-09 15:38:45,871 INFO L125 PetriNetUnfolderBase]: For 841/1256 co-relation queries the response was YES. [2023-12-09 15:38:45,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 1342 events. 251/1342 cut-off events. For 841/1256 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9279 event pairs, 23 based on Foata normal form. 25/1205 useless extension candidates. Maximal degree in co-relation 2189. Up to 266 conditions per place. [2023-12-09 15:38:45,881 INFO L140 encePairwiseOnDemand]: 172/181 looper letters, 134 selfloop transitions, 17 changer transitions 5/289 dead transitions. [2023-12-09 15:38:45,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 289 transitions, 1504 flow [2023-12-09 15:38:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:38:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:38:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 939 transitions. [2023-12-09 15:38:45,883 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8646408839779005 [2023-12-09 15:38:45,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 939 transitions. [2023-12-09 15:38:45,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 939 transitions. [2023-12-09 15:38:45,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:45,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 939 transitions. [2023-12-09 15:38:45,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.5) internal successors, (939), 6 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,889 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,890 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 15 predicate places. [2023-12-09 15:38:45,891 INFO L500 AbstractCegarLoop]: Abstraction has has 177 places, 289 transitions, 1504 flow [2023-12-09 15:38:45,891 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:45,891 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:45,891 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:45,892 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:38:45,892 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:45,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash -161413895, now seen corresponding path program 3 times [2023-12-09 15:38:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203900510] [2023-12-09 15:38:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:46,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203900510] [2023-12-09 15:38:46,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203900510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:38:46,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:38:46,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:38:46,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550616280] [2023-12-09 15:38:46,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:38:46,168 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:38:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:38:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:38:46,170 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2023-12-09 15:38:46,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 289 transitions, 1504 flow. Second operand has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:46,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:46,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2023-12-09 15:38:46,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:46,497 INFO L124 PetriNetUnfolderBase]: 273/1394 cut-off events. [2023-12-09 15:38:46,497 INFO L125 PetriNetUnfolderBase]: For 1313/1924 co-relation queries the response was YES. [2023-12-09 15:38:46,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3471 conditions, 1394 events. 273/1394 cut-off events. For 1313/1924 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9701 event pairs, 24 based on Foata normal form. 79/1311 useless extension candidates. Maximal degree in co-relation 3210. Up to 273 conditions per place. [2023-12-09 15:38:46,508 INFO L140 encePairwiseOnDemand]: 172/181 looper letters, 143 selfloop transitions, 30 changer transitions 9/315 dead transitions. [2023-12-09 15:38:46,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 315 transitions, 2060 flow [2023-12-09 15:38:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:38:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:38:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 955 transitions. [2023-12-09 15:38:46,511 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8793738489871087 [2023-12-09 15:38:46,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 955 transitions. [2023-12-09 15:38:46,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 955 transitions. [2023-12-09 15:38:46,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:46,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 955 transitions. [2023-12-09 15:38:46,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:46,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:46,517 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:46,519 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 20 predicate places. [2023-12-09 15:38:46,519 INFO L500 AbstractCegarLoop]: Abstraction has has 182 places, 315 transitions, 2060 flow [2023-12-09 15:38:46,519 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:46,519 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:46,520 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:46,520 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:38:46,520 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:46,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash 342049679, now seen corresponding path program 1 times [2023-12-09 15:38:46,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:46,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339542544] [2023-12-09 15:38:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:38:46,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:46,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339542544] [2023-12-09 15:38:46,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339542544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:38:46,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:38:46,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:38:46,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904697035] [2023-12-09 15:38:46,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:38:46,782 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:38:46,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:38:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:38:46,784 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 181 [2023-12-09 15:38:46,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 315 transitions, 2060 flow. Second operand has 8 states, 8 states have (on average 123.125) internal successors, (985), 8 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:46,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:46,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 181 [2023-12-09 15:38:46,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:47,055 INFO L124 PetriNetUnfolderBase]: 317/1687 cut-off events. [2023-12-09 15:38:47,055 INFO L125 PetriNetUnfolderBase]: For 1927/2208 co-relation queries the response was YES. [2023-12-09 15:38:47,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4157 conditions, 1687 events. 317/1687 cut-off events. For 1927/2208 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12738 event pairs, 65 based on Foata normal form. 11/1497 useless extension candidates. Maximal degree in co-relation 3254. Up to 300 conditions per place. [2023-12-09 15:38:47,069 INFO L140 encePairwiseOnDemand]: 171/181 looper letters, 54 selfloop transitions, 9 changer transitions 9/319 dead transitions. [2023-12-09 15:38:47,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 319 transitions, 2206 flow [2023-12-09 15:38:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:38:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:38:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1000 transitions. [2023-12-09 15:38:47,072 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6906077348066298 [2023-12-09 15:38:47,072 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1000 transitions. [2023-12-09 15:38:47,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1000 transitions. [2023-12-09 15:38:47,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:47,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1000 transitions. [2023-12-09 15:38:47,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:47,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:47,077 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:47,079 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 27 predicate places. [2023-12-09 15:38:47,079 INFO L500 AbstractCegarLoop]: Abstraction has has 189 places, 319 transitions, 2206 flow [2023-12-09 15:38:47,080 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.125) internal successors, (985), 8 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:47,080 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:47,080 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:47,080 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:38:47,080 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:47,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1396419699, now seen corresponding path program 1 times [2023-12-09 15:38:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:47,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262012445] [2023-12-09 15:38:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:47,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:38:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:47,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262012445] [2023-12-09 15:38:47,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262012445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:47,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361606792] [2023-12-09 15:38:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:47,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:47,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:47,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:47,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:38:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:47,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-09 15:38:47,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:48,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:38:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:38:48,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:48,468 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:38:48,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-12-09 15:38:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:38:48,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361606792] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:48,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:38:48,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 17 [2023-12-09 15:38:48,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268323701] [2023-12-09 15:38:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:38:48,566 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:38:48,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:48,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:38:48,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-09 15:38:48,571 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 181 [2023-12-09 15:38:48,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 319 transitions, 2206 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:48,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:48,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 181 [2023-12-09 15:38:48,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:49,716 INFO L124 PetriNetUnfolderBase]: 1971/5946 cut-off events. [2023-12-09 15:38:49,716 INFO L125 PetriNetUnfolderBase]: For 7480/8588 co-relation queries the response was YES. [2023-12-09 15:38:49,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15788 conditions, 5946 events. 1971/5946 cut-off events. For 7480/8588 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 53501 event pairs, 323 based on Foata normal form. 28/5331 useless extension candidates. Maximal degree in co-relation 13736. Up to 1168 conditions per place. [2023-12-09 15:38:49,774 INFO L140 encePairwiseOnDemand]: 164/181 looper letters, 142 selfloop transitions, 33 changer transitions 23/442 dead transitions. [2023-12-09 15:38:49,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 442 transitions, 3159 flow [2023-12-09 15:38:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-09 15:38:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-12-09 15:38:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2303 transitions. [2023-12-09 15:38:49,780 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6696714161093341 [2023-12-09 15:38:49,780 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2303 transitions. [2023-12-09 15:38:49,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2303 transitions. [2023-12-09 15:38:49,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:49,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2303 transitions. [2023-12-09 15:38:49,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 121.21052631578948) internal successors, (2303), 19 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:49,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 181.0) internal successors, (3620), 20 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:49,795 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 181.0) internal successors, (3620), 20 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:49,796 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 45 predicate places. [2023-12-09 15:38:49,797 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 442 transitions, 3159 flow [2023-12-09 15:38:49,797 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:49,797 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:49,797 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:49,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:38:50,006 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:38:50,007 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:50,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -417309386, now seen corresponding path program 1 times [2023-12-09 15:38:50,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:50,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691431641] [2023-12-09 15:38:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:50,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:38:50,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:50,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691431641] [2023-12-09 15:38:50,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691431641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:50,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672126172] [2023-12-09 15:38:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:50,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:50,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:50,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:50,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:38:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:50,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-09 15:38:50,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:51,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:51,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:38:51,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2023-12-09 15:38:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:53,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672126172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:38:53,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:38:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 38 [2023-12-09 15:38:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216160615] [2023-12-09 15:38:53,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:38:53,123 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-09 15:38:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:53,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-09 15:38:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2023-12-09 15:38:53,129 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 181 [2023-12-09 15:38:53,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 442 transitions, 3159 flow. Second operand has 38 states, 38 states have (on average 65.13157894736842) internal successors, (2475), 38 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:53,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:53,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 181 [2023-12-09 15:38:53,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:00,529 INFO L124 PetriNetUnfolderBase]: 8757/18478 cut-off events. [2023-12-09 15:39:00,529 INFO L125 PetriNetUnfolderBase]: For 33448/33723 co-relation queries the response was YES. [2023-12-09 15:39:00,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60376 conditions, 18478 events. 8757/18478 cut-off events. For 33448/33723 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 175227 event pairs, 795 based on Foata normal form. 34/16877 useless extension candidates. Maximal degree in co-relation 41239. Up to 4814 conditions per place. [2023-12-09 15:39:00,724 INFO L140 encePairwiseOnDemand]: 123/181 looper letters, 775 selfloop transitions, 146 changer transitions 386/1365 dead transitions. [2023-12-09 15:39:00,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1365 transitions, 11422 flow [2023-12-09 15:39:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-09 15:39:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2023-12-09 15:39:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 7066 transitions. [2023-12-09 15:39:00,753 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3753718657033574 [2023-12-09 15:39:00,754 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 7066 transitions. [2023-12-09 15:39:00,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 7066 transitions. [2023-12-09 15:39:00,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:00,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 7066 transitions. [2023-12-09 15:39:00,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 67.9423076923077) internal successors, (7066), 104 states have internal predecessors, (7066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:00,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 181.0) internal successors, (19005), 105 states have internal predecessors, (19005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:00,810 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 181.0) internal successors, (19005), 105 states have internal predecessors, (19005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:00,811 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 148 predicate places. [2023-12-09 15:39:00,811 INFO L500 AbstractCegarLoop]: Abstraction has has 310 places, 1365 transitions, 11422 flow [2023-12-09 15:39:00,824 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 65.13157894736842) internal successors, (2475), 38 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:00,825 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:00,825 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:00,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 15:39:01,030 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-09 15:39:01,031 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:01,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2031914859, now seen corresponding path program 2 times [2023-12-09 15:39:01,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:01,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859508128] [2023-12-09 15:39:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:01,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859508128] [2023-12-09 15:39:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859508128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767014849] [2023-12-09 15:39:01,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:39:01,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:01,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:01,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:01,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:39:01,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:39:01,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:01,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-09 15:39:01,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:01,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:01,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:02,039 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:39:02,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-12-09 15:39:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:39:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767014849] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:02,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:39:02,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 16 [2023-12-09 15:39:02,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018746806] [2023-12-09 15:39:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:39:02,144 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:39:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:39:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:39:02,146 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 181 [2023-12-09 15:39:02,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 1365 transitions, 11422 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:02,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:02,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 181 [2023-12-09 15:39:02,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:04,613 INFO L124 PetriNetUnfolderBase]: 8984/19023 cut-off events. [2023-12-09 15:39:04,614 INFO L125 PetriNetUnfolderBase]: For 47137/47814 co-relation queries the response was YES. [2023-12-09 15:39:04,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70540 conditions, 19023 events. 8984/19023 cut-off events. For 47137/47814 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 181717 event pairs, 722 based on Foata normal form. 26/17388 useless extension candidates. Maximal degree in co-relation 48478. Up to 4976 conditions per place. [2023-12-09 15:39:04,742 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 370 selfloop transitions, 68 changer transitions 398/1442 dead transitions. [2023-12-09 15:39:04,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1442 transitions, 13274 flow [2023-12-09 15:39:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 15:39:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 15:39:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2161 transitions. [2023-12-09 15:39:04,746 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6632903621853898 [2023-12-09 15:39:04,746 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2161 transitions. [2023-12-09 15:39:04,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2161 transitions. [2023-12-09 15:39:04,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:04,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2161 transitions. [2023-12-09 15:39:04,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 120.05555555555556) internal successors, (2161), 18 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:04,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 181.0) internal successors, (3439), 19 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:04,754 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 181.0) internal successors, (3439), 19 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:04,754 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 165 predicate places. [2023-12-09 15:39:04,754 INFO L500 AbstractCegarLoop]: Abstraction has has 327 places, 1442 transitions, 13274 flow [2023-12-09 15:39:04,755 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:04,755 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:04,755 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:04,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:04,960 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:04,960 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:04,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:04,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1522629351, now seen corresponding path program 3 times [2023-12-09 15:39:04,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:04,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86955594] [2023-12-09 15:39:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:04,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:05,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:05,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86955594] [2023-12-09 15:39:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86955594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:05,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339053088] [2023-12-09 15:39:05,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:39:05,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:05,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:05,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:05,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:39:05,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:39:05,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:05,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-09 15:39:05,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:05,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:05,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:05,902 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:39:05,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-12-09 15:39:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:39:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339053088] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:39:05,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 16 [2023-12-09 15:39:05,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106899678] [2023-12-09 15:39:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:39:05,990 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:39:05,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:39:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:39:05,992 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 181 [2023-12-09 15:39:05,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1442 transitions, 13274 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:05,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:05,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 181 [2023-12-09 15:39:05,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:08,677 INFO L124 PetriNetUnfolderBase]: 9137/19472 cut-off events. [2023-12-09 15:39:08,677 INFO L125 PetriNetUnfolderBase]: For 66462/67422 co-relation queries the response was YES. [2023-12-09 15:39:08,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80726 conditions, 19472 events. 9137/19472 cut-off events. For 66462/67422 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 187274 event pairs, 792 based on Foata normal form. 38/17841 useless extension candidates. Maximal degree in co-relation 55769. Up to 5137 conditions per place. [2023-12-09 15:39:08,828 INFO L140 encePairwiseOnDemand]: 164/181 looper letters, 401 selfloop transitions, 84 changer transitions 410/1501 dead transitions. [2023-12-09 15:39:08,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1501 transitions, 15240 flow [2023-12-09 15:39:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-09 15:39:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-12-09 15:39:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2746 transitions. [2023-12-09 15:39:08,944 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6596204660100888 [2023-12-09 15:39:08,945 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2746 transitions. [2023-12-09 15:39:08,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2746 transitions. [2023-12-09 15:39:08,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:08,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2746 transitions. [2023-12-09 15:39:08,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 119.3913043478261) internal successors, (2746), 23 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:08,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 181.0) internal successors, (4344), 24 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:08,953 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 181.0) internal successors, (4344), 24 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:08,953 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 187 predicate places. [2023-12-09 15:39:08,953 INFO L500 AbstractCegarLoop]: Abstraction has has 349 places, 1501 transitions, 15240 flow [2023-12-09 15:39:08,954 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:08,954 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:08,954 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:08,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:09,154 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:09,155 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:09,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1459208389, now seen corresponding path program 4 times [2023-12-09 15:39:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:09,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6334225] [2023-12-09 15:39:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:09,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6334225] [2023-12-09 15:39:09,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6334225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004367879] [2023-12-09 15:39:09,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:39:09,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:09,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:09,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:39:09,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:39:09,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:09,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-09 15:39:09,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:09,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:09,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:09,915 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:39:09,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-12-09 15:39:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:39:10,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004367879] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:10,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:39:10,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 10] total 17 [2023-12-09 15:39:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684811323] [2023-12-09 15:39:10,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:39:10,008 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:39:10,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:39:10,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-09 15:39:10,010 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 181 [2023-12-09 15:39:10,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1501 transitions, 15240 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:10,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:10,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 181 [2023-12-09 15:39:10,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:12,783 INFO L124 PetriNetUnfolderBase]: 9267/19762 cut-off events. [2023-12-09 15:39:12,783 INFO L125 PetriNetUnfolderBase]: For 91137/92575 co-relation queries the response was YES. [2023-12-09 15:39:12,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90804 conditions, 19762 events. 9267/19762 cut-off events. For 91137/92575 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 190912 event pairs, 729 based on Foata normal form. 38/18099 useless extension candidates. Maximal degree in co-relation 62949. Up to 5243 conditions per place. [2023-12-09 15:39:12,996 INFO L140 encePairwiseOnDemand]: 164/181 looper letters, 421 selfloop transitions, 79 changer transitions 420/1526 dead transitions. [2023-12-09 15:39:12,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 1526 transitions, 17009 flow [2023-12-09 15:39:12,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:39:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:39:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2504 transitions. [2023-12-09 15:39:13,000 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6587740068403052 [2023-12-09 15:39:13,000 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2504 transitions. [2023-12-09 15:39:13,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2504 transitions. [2023-12-09 15:39:13,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:13,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2504 transitions. [2023-12-09 15:39:13,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 119.23809523809524) internal successors, (2504), 21 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,008 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,009 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 207 predicate places. [2023-12-09 15:39:13,009 INFO L500 AbstractCegarLoop]: Abstraction has has 369 places, 1526 transitions, 17009 flow [2023-12-09 15:39:13,009 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,009 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:13,009 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:13,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:39:13,214 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-09 15:39:13,215 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:13,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1275631907, now seen corresponding path program 5 times [2023-12-09 15:39:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146723719] [2023-12-09 15:39:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:13,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:13,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146723719] [2023-12-09 15:39:13,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146723719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:13,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511096549] [2023-12-09 15:39:13,569 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:39:13,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:13,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:13,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:13,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:39:13,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:39:13,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:13,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-09 15:39:13,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:14,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:39:14,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:39:14,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:39:14,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:14,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:14,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:39:14,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2023-12-09 15:39:14,879 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:39:14,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 94 treesize of output 81 [2023-12-09 15:39:14,890 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 15:39:14,890 INFO L378 Elim1Store]: Elim1 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 78 treesize of output 54 [2023-12-09 15:39:14,898 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 15:39:14,898 INFO L378 Elim1Store]: Elim1 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 32 treesize of output 20 [2023-12-09 15:39:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511096549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:14,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:14,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 15] total 32 [2023-12-09 15:39:14,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489544051] [2023-12-09 15:39:14,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:14,955 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-09 15:39:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-09 15:39:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=759, Unknown=18, NotChecked=0, Total=992 [2023-12-09 15:39:14,961 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 181 [2023-12-09 15:39:14,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 1526 transitions, 17009 flow. Second operand has 32 states, 32 states have (on average 92.875) internal successors, (2972), 32 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:14,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:14,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 181 [2023-12-09 15:39:14,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:18,398 INFO L124 PetriNetUnfolderBase]: 9418/20243 cut-off events. [2023-12-09 15:39:18,398 INFO L125 PetriNetUnfolderBase]: For 121946/123555 co-relation queries the response was YES. [2023-12-09 15:39:18,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101754 conditions, 20243 events. 9418/20243 cut-off events. For 121946/123555 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 197543 event pairs, 812 based on Foata normal form. 46/18586 useless extension candidates. Maximal degree in co-relation 70687. Up to 5358 conditions per place. [2023-12-09 15:39:18,557 INFO L140 encePairwiseOnDemand]: 153/181 looper letters, 476 selfloop transitions, 78 changer transitions 430/1562 dead transitions. [2023-12-09 15:39:18,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1562 transitions, 19103 flow [2023-12-09 15:39:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:39:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:39:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2528 transitions. [2023-12-09 15:39:18,562 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5172907714344178 [2023-12-09 15:39:18,562 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2528 transitions. [2023-12-09 15:39:18,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2528 transitions. [2023-12-09 15:39:18,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:18,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2528 transitions. [2023-12-09 15:39:18,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 93.62962962962963) internal successors, (2528), 27 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:18,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 181.0) internal successors, (5068), 28 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:18,573 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 181.0) internal successors, (5068), 28 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:18,573 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 233 predicate places. [2023-12-09 15:39:18,574 INFO L500 AbstractCegarLoop]: Abstraction has has 395 places, 1562 transitions, 19103 flow [2023-12-09 15:39:18,574 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 92.875) internal successors, (2972), 32 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:18,574 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:18,575 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:18,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:39:18,780 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:18,781 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:18,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1004887911, now seen corresponding path program 6 times [2023-12-09 15:39:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908384552] [2023-12-09 15:39:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:19,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908384552] [2023-12-09 15:39:19,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908384552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845754174] [2023-12-09 15:39:19,197 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:39:19,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:19,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:19,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:19,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:39:19,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:39:19,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:19,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-09 15:39:19,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:19,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:19,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:19,668 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:39:19,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-12-09 15:39:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:39:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845754174] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:19,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:39:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 16 [2023-12-09 15:39:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878077187] [2023-12-09 15:39:19,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:39:19,758 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:39:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:39:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:39:19,759 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 181 [2023-12-09 15:39:19,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1562 transitions, 19103 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:19,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:19,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 181 [2023-12-09 15:39:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:22,974 INFO L124 PetriNetUnfolderBase]: 9495/20422 cut-off events. [2023-12-09 15:39:22,974 INFO L125 PetriNetUnfolderBase]: For 158466/160681 co-relation queries the response was YES. [2023-12-09 15:39:23,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111743 conditions, 20422 events. 9495/20422 cut-off events. For 158466/160681 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 199696 event pairs, 819 based on Foata normal form. 46/18741 useless extension candidates. Maximal degree in co-relation 77687. Up to 5446 conditions per place. [2023-12-09 15:39:23,104 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 460 selfloop transitions, 74 changer transitions 440/1580 dead transitions. [2023-12-09 15:39:23,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1580 transitions, 20988 flow [2023-12-09 15:39:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:39:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:39:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2494 transitions. [2023-12-09 15:39:23,108 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.656143120231518 [2023-12-09 15:39:23,108 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2494 transitions. [2023-12-09 15:39:23,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2494 transitions. [2023-12-09 15:39:23,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:23,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2494 transitions. [2023-12-09 15:39:23,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 118.76190476190476) internal successors, (2494), 21 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:23,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:23,117 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:23,117 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 253 predicate places. [2023-12-09 15:39:23,117 INFO L500 AbstractCegarLoop]: Abstraction has has 415 places, 1580 transitions, 20988 flow [2023-12-09 15:39:23,118 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:23,118 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:23,118 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:23,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:23,322 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:23,323 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:23,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:23,323 INFO L85 PathProgramCache]: Analyzing trace with hash -316334969, now seen corresponding path program 7 times [2023-12-09 15:39:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:23,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822635783] [2023-12-09 15:39:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:23,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822635783] [2023-12-09 15:39:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822635783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39554804] [2023-12-09 15:39:23,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:39:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:23,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:23,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:39:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:23,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-09 15:39:23,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:23,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-09 15:39:24,112 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:39:24,113 INFO L378 Elim1Store]: Elim1 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 11 [2023-12-09 15:39:24,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 15:39:24,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:24,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:24,501 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_247 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_247) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)) |c_thread1Thread1of1ForFork1_#t~mem1#1|)) is different from false [2023-12-09 15:39:24,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:39:24,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 30 [2023-12-09 15:39:24,529 INFO L378 Elim1Store]: Elim1 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 13 treesize of output 7 [2023-12-09 15:39:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39554804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:24,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:24,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 26 [2023-12-09 15:39:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679855975] [2023-12-09 15:39:24,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:24,974 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-09 15:39:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:24,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-09 15:39:24,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=519, Unknown=1, NotChecked=46, Total=650 [2023-12-09 15:39:24,978 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 181 [2023-12-09 15:39:24,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1580 transitions, 20988 flow. Second operand has 26 states, 26 states have (on average 97.07692307692308) internal successors, (2524), 26 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:24,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:24,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 181 [2023-12-09 15:39:24,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:29,531 INFO L124 PetriNetUnfolderBase]: 10494/22584 cut-off events. [2023-12-09 15:39:29,531 INFO L125 PetriNetUnfolderBase]: For 222354/225880 co-relation queries the response was YES. [2023-12-09 15:39:29,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133921 conditions, 22584 events. 10494/22584 cut-off events. For 222354/225880 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 225491 event pairs, 1005 based on Foata normal form. 86/20704 useless extension candidates. Maximal degree in co-relation 95349. Up to 6753 conditions per place. [2023-12-09 15:39:29,680 INFO L140 encePairwiseOnDemand]: 155/181 looper letters, 538 selfloop transitions, 143 changer transitions 485/1756 dead transitions. [2023-12-09 15:39:29,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1756 transitions, 26192 flow [2023-12-09 15:39:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-09 15:39:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-12-09 15:39:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3567 transitions. [2023-12-09 15:39:29,684 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5474217311233885 [2023-12-09 15:39:29,684 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3567 transitions. [2023-12-09 15:39:29,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3567 transitions. [2023-12-09 15:39:29,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:29,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3567 transitions. [2023-12-09 15:39:29,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 99.08333333333333) internal successors, (3567), 36 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:29,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 181.0) internal successors, (6697), 37 states have internal predecessors, (6697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:29,698 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 181.0) internal successors, (6697), 37 states have internal predecessors, (6697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:29,699 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 288 predicate places. [2023-12-09 15:39:29,699 INFO L500 AbstractCegarLoop]: Abstraction has has 450 places, 1756 transitions, 26192 flow [2023-12-09 15:39:29,700 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 97.07692307692308) internal successors, (2524), 26 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:29,700 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:29,700 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:29,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:29,904 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 15:39:29,905 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:29,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -711050957, now seen corresponding path program 8 times [2023-12-09 15:39:29,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:29,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883403844] [2023-12-09 15:39:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:29,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:30,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883403844] [2023-12-09 15:39:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883403844] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138689768] [2023-12-09 15:39:30,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:39:30,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:30,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:30,463 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:30,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:39:30,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:39:30,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:30,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-09 15:39:30,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:31,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:39:31,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 15:39:31,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:31,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:31,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:39:31,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 30 [2023-12-09 15:39:31,418 INFO L378 Elim1Store]: Elim1 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 13 treesize of output 7 [2023-12-09 15:39:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:31,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138689768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:31,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:31,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 32 [2023-12-09 15:39:31,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035596007] [2023-12-09 15:39:31,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:31,723 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-09 15:39:31,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-09 15:39:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=863, Unknown=4, NotChecked=0, Total=992 [2023-12-09 15:39:31,727 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 181 [2023-12-09 15:39:31,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 1756 transitions, 26192 flow. Second operand has 32 states, 32 states have (on average 96.375) internal successors, (3084), 32 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:31,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:31,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 181 [2023-12-09 15:39:31,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:36,642 INFO L124 PetriNetUnfolderBase]: 10797/23431 cut-off events. [2023-12-09 15:39:36,642 INFO L125 PetriNetUnfolderBase]: For 279413/282879 co-relation queries the response was YES. [2023-12-09 15:39:36,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149027 conditions, 23431 events. 10797/23431 cut-off events. For 279413/282879 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 236362 event pairs, 1155 based on Foata normal form. 82/21507 useless extension candidates. Maximal degree in co-relation 106808. Up to 7135 conditions per place. [2023-12-09 15:39:36,811 INFO L140 encePairwiseOnDemand]: 156/181 looper letters, 614 selfloop transitions, 146 changer transitions 518/1867 dead transitions. [2023-12-09 15:39:36,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1867 transitions, 30564 flow [2023-12-09 15:39:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-09 15:39:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-12-09 15:39:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3892 transitions. [2023-12-09 15:39:36,815 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5375690607734807 [2023-12-09 15:39:36,815 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3892 transitions. [2023-12-09 15:39:36,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3892 transitions. [2023-12-09 15:39:36,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:36,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3892 transitions. [2023-12-09 15:39:36,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 97.3) internal successors, (3892), 40 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:36,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 181.0) internal successors, (7421), 41 states have internal predecessors, (7421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:36,830 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 181.0) internal successors, (7421), 41 states have internal predecessors, (7421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:36,831 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 327 predicate places. [2023-12-09 15:39:36,831 INFO L500 AbstractCegarLoop]: Abstraction has has 489 places, 1867 transitions, 30564 flow [2023-12-09 15:39:36,832 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 96.375) internal successors, (3084), 32 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:36,832 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:36,832 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:36,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:37,037 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 15:39:37,037 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:37,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash -248922267, now seen corresponding path program 9 times [2023-12-09 15:39:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:37,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72519893] [2023-12-09 15:39:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:37,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:37,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:37,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72519893] [2023-12-09 15:39:37,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72519893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:37,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299287366] [2023-12-09 15:39:37,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:39:37,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:37,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:37,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:37,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:39:37,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:39:37,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:37,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-09 15:39:37,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:38,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:39:38,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 15:39:38,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:38,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:38,385 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_297 (Array Int Int))) (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_297) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)))) is different from false [2023-12-09 15:39:38,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:39:38,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 30 [2023-12-09 15:39:38,401 INFO L378 Elim1Store]: Elim1 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 13 treesize of output 7 [2023-12-09 15:39:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:38,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299287366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:38,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:38,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 32 [2023-12-09 15:39:38,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804751922] [2023-12-09 15:39:38,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:38,692 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-09 15:39:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-09 15:39:38,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=810, Unknown=1, NotChecked=58, Total=992 [2023-12-09 15:39:38,695 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 181 [2023-12-09 15:39:38,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1867 transitions, 30564 flow. Second operand has 32 states, 32 states have (on average 96.375) internal successors, (3084), 32 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:38,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:38,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 181 [2023-12-09 15:39:38,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:43,563 INFO L124 PetriNetUnfolderBase]: 10836/23569 cut-off events. [2023-12-09 15:39:43,563 INFO L125 PetriNetUnfolderBase]: For 337112/340599 co-relation queries the response was YES. [2023-12-09 15:39:43,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160292 conditions, 23569 events. 10836/23569 cut-off events. For 337112/340599 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 238740 event pairs, 1124 based on Foata normal form. 52/21613 useless extension candidates. Maximal degree in co-relation 114917. Up to 7220 conditions per place. [2023-12-09 15:39:43,758 INFO L140 encePairwiseOnDemand]: 156/181 looper letters, 655 selfloop transitions, 119 changer transitions 528/1891 dead transitions. [2023-12-09 15:39:43,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1891 transitions, 33327 flow [2023-12-09 15:39:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:39:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:39:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3021 transitions. [2023-12-09 15:39:43,763 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5384067011227945 [2023-12-09 15:39:43,763 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3021 transitions. [2023-12-09 15:39:43,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3021 transitions. [2023-12-09 15:39:43,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:43,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3021 transitions. [2023-12-09 15:39:43,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 97.45161290322581) internal successors, (3021), 31 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:43,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 181.0) internal successors, (5792), 32 states have internal predecessors, (5792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:43,772 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 181.0) internal successors, (5792), 32 states have internal predecessors, (5792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:43,773 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 357 predicate places. [2023-12-09 15:39:43,773 INFO L500 AbstractCegarLoop]: Abstraction has has 519 places, 1891 transitions, 33327 flow [2023-12-09 15:39:43,773 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 96.375) internal successors, (3084), 32 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:43,773 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:43,773 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:43,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:43,980 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:39:43,980 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:43,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1362084631, now seen corresponding path program 10 times [2023-12-09 15:39:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793750425] [2023-12-09 15:39:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:44,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:44,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793750425] [2023-12-09 15:39:44,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793750425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:44,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882649042] [2023-12-09 15:39:44,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:39:44,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:44,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:44,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:39:44,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:39:44,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:44,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-09 15:39:44,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:44,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:39:45,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:39:45,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:39:45,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 15:39:45,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-12-09 15:39:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:45,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:45,532 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 (Array Int Int))) (= (select (select |c_#memory_int| c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_324) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)))) is different from false [2023-12-09 15:39:45,559 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_323))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_324) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)) (select (select .cse0 c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset))))) is different from false [2023-12-09 15:39:45,573 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_323))) (= (select (select .cse0 |c_ULTIMATE.start_main_#t~ret11#1.base|) (+ (* c_~x1~0 4) |c_ULTIMATE.start_main_#t~ret11#1.offset|)) (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_324) |c_ULTIMATE.start_main_#t~ret11#1.base|) (+ (* c_~x2~0 4) |c_ULTIMATE.start_main_#t~ret11#1.offset|))))) is different from false [2023-12-09 15:39:45,586 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_323))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_324) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* c_~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))))) is different from false [2023-12-09 15:39:45,590 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_323))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_324) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-12-09 15:39:45,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:39:45,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2023-12-09 15:39:45,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:39:45,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 202 treesize of output 162 [2023-12-09 15:39:45,624 INFO L378 Elim1Store]: Elim1 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 72 treesize of output 60 [2023-12-09 15:39:45,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:39:45,631 INFO L378 Elim1Store]: Elim1 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 38 treesize of output 29 [2023-12-09 15:39:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-09 15:39:45,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882649042] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:45,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:45,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 18] total 40 [2023-12-09 15:39:45,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811571505] [2023-12-09 15:39:45,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:45,822 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-09 15:39:45,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:45,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-09 15:39:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1052, Unknown=10, NotChecked=350, Total=1560 [2023-12-09 15:39:45,829 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 181 [2023-12-09 15:39:45,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1891 transitions, 33327 flow. Second operand has 40 states, 40 states have (on average 89.175) internal successors, (3567), 40 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:45,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:45,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 181 [2023-12-09 15:39:45,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:51,727 INFO L124 PetriNetUnfolderBase]: 11358/24680 cut-off events. [2023-12-09 15:39:51,727 INFO L125 PetriNetUnfolderBase]: For 418399/423186 co-relation queries the response was YES. [2023-12-09 15:39:51,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179100 conditions, 24680 events. 11358/24680 cut-off events. For 418399/423186 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 251974 event pairs, 1231 based on Foata normal form. 118/22646 useless extension candidates. Maximal degree in co-relation 129587. Up to 8028 conditions per place. [2023-12-09 15:39:51,930 INFO L140 encePairwiseOnDemand]: 153/181 looper letters, 679 selfloop transitions, 146 changer transitions 549/1949 dead transitions. [2023-12-09 15:39:51,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1949 transitions, 37156 flow [2023-12-09 15:39:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:39:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:39:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2480 transitions. [2023-12-09 15:39:51,933 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5074687947616124 [2023-12-09 15:39:51,933 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2480 transitions. [2023-12-09 15:39:51,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2480 transitions. [2023-12-09 15:39:51,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:51,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2480 transitions. [2023-12-09 15:39:51,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 91.85185185185185) internal successors, (2480), 27 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:51,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 181.0) internal successors, (5068), 28 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:51,941 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 181.0) internal successors, (5068), 28 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:51,941 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 383 predicate places. [2023-12-09 15:39:51,941 INFO L500 AbstractCegarLoop]: Abstraction has has 545 places, 1949 transitions, 37156 flow [2023-12-09 15:39:51,942 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 89.175) internal successors, (3567), 40 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:51,942 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:51,942 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:51,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:52,149 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 15:39:52,149 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash -813283800, now seen corresponding path program 2 times [2023-12-09 15:39:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255770438] [2023-12-09 15:39:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:39:52,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255770438] [2023-12-09 15:39:52,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255770438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033483691] [2023-12-09 15:39:52,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:39:52,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:52,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:52,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:52,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:39:52,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:39:52,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:52,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:39:52,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:39:52,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:39:53,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033483691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:53,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:53,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-12-09 15:39:53,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706153843] [2023-12-09 15:39:53,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:53,207 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:39:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:39:53,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:39:53,210 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:39:53,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1949 transitions, 37156 flow. Second operand has 19 states, 19 states have (on average 146.78947368421052) internal successors, (2789), 19 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:53,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:53,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:39:53,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:40:00,285 INFO L124 PetriNetUnfolderBase]: 13925/29722 cut-off events. [2023-12-09 15:40:00,285 INFO L125 PetriNetUnfolderBase]: For 557777/563701 co-relation queries the response was YES. [2023-12-09 15:40:00,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228884 conditions, 29722 events. 13925/29722 cut-off events. For 557777/563701 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 309413 event pairs, 2135 based on Foata normal form. 35/27262 useless extension candidates. Maximal degree in co-relation 168159. Up to 10395 conditions per place. [2023-12-09 15:40:00,546 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 321 selfloop transitions, 230 changer transitions 625/2178 dead transitions. [2023-12-09 15:40:00,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 2178 transitions, 43090 flow [2023-12-09 15:40:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:40:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 15:40:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3626 transitions. [2023-12-09 15:40:00,549 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8347145488029466 [2023-12-09 15:40:00,549 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3626 transitions. [2023-12-09 15:40:00,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3626 transitions. [2023-12-09 15:40:00,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:40:00,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3626 transitions. [2023-12-09 15:40:00,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 151.08333333333334) internal successors, (3626), 24 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:00,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 181.0) internal successors, (4525), 25 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:00,557 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 181.0) internal successors, (4525), 25 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:00,557 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 406 predicate places. [2023-12-09 15:40:00,557 INFO L500 AbstractCegarLoop]: Abstraction has has 568 places, 2178 transitions, 43090 flow [2023-12-09 15:40:00,558 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.78947368421052) internal successors, (2789), 19 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:00,558 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:40:00,558 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:40:00,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-09 15:40:00,764 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:40:00,765 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:40:00,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:40:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash -898796702, now seen corresponding path program 3 times [2023-12-09 15:40:00,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:40:00,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884300221] [2023-12-09 15:40:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:40:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:40:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:40:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:40:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884300221] [2023-12-09 15:40:00,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884300221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:40:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225769857] [2023-12-09 15:40:00,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:40:00,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:40:00,988 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:40:01,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:40:01,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:40:01,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:40:01,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:40:01,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:40:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:01,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:40:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225769857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:40:01,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:40:01,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-12-09 15:40:01,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019711990] [2023-12-09 15:40:01,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:40:01,571 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:40:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:40:01,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:40:01,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:40:01,573 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:40:01,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 2178 transitions, 43090 flow. Second operand has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:01,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:40:01,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:40:01,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:40:11,733 INFO L124 PetriNetUnfolderBase]: 18313/37684 cut-off events. [2023-12-09 15:40:11,733 INFO L125 PetriNetUnfolderBase]: For 771371/779363 co-relation queries the response was YES. [2023-12-09 15:40:11,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306568 conditions, 37684 events. 18313/37684 cut-off events. For 771371/779363 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 399147 event pairs, 3445 based on Foata normal form. 48/34647 useless extension candidates. Maximal degree in co-relation 225897. Up to 13345 conditions per place. [2023-12-09 15:40:12,105 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 363 selfloop transitions, 350 changer transitions 709/2426 dead transitions. [2023-12-09 15:40:12,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 2426 transitions, 49816 flow [2023-12-09 15:40:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-09 15:40:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-12-09 15:40:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6017 transitions. [2023-12-09 15:40:12,108 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8310773480662983 [2023-12-09 15:40:12,108 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6017 transitions. [2023-12-09 15:40:12,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6017 transitions. [2023-12-09 15:40:12,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:40:12,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6017 transitions. [2023-12-09 15:40:12,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 150.425) internal successors, (6017), 40 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:12,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 181.0) internal successors, (7421), 41 states have internal predecessors, (7421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:12,120 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 181.0) internal successors, (7421), 41 states have internal predecessors, (7421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:12,121 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 445 predicate places. [2023-12-09 15:40:12,121 INFO L500 AbstractCegarLoop]: Abstraction has has 607 places, 2426 transitions, 49816 flow [2023-12-09 15:40:12,121 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:12,122 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:40:12,122 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:40:12,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-09 15:40:12,328 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-09 15:40:12,328 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:40:12,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:40:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1821220894, now seen corresponding path program 4 times [2023-12-09 15:40:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:40:12,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605829570] [2023-12-09 15:40:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:40:12,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:40:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:40:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:12,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:40:12,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605829570] [2023-12-09 15:40:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605829570] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:40:12,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919285537] [2023-12-09 15:40:12,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:40:12,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:12,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:40:12,588 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:40:12,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-09 15:40:12,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:40:13,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:40:13,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:40:13,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:40:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:13,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:40:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919285537] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:40:13,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:40:13,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-12-09 15:40:13,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133943169] [2023-12-09 15:40:13,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:40:13,481 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:40:13,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:40:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:40:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:40:13,484 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:40:13,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 2426 transitions, 49816 flow. Second operand has 20 states, 20 states have (on average 146.75) internal successors, (2935), 20 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:13,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:40:13,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:40:13,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:40:28,422 INFO L124 PetriNetUnfolderBase]: 23302/46676 cut-off events. [2023-12-09 15:40:28,422 INFO L125 PetriNetUnfolderBase]: For 1029082/1038246 co-relation queries the response was YES. [2023-12-09 15:40:28,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396069 conditions, 46676 events. 23302/46676 cut-off events. For 1029082/1038246 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 494435 event pairs, 4101 based on Foata normal form. 44/42929 useless extension candidates. Maximal degree in co-relation 285635. Up to 15099 conditions per place. [2023-12-09 15:40:28,997 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 467 selfloop transitions, 594 changer transitions 813/2878 dead transitions. [2023-12-09 15:40:28,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 2878 transitions, 61156 flow [2023-12-09 15:40:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-09 15:40:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-12-09 15:40:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 10944 transitions. [2023-12-09 15:40:29,006 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8282751835313706 [2023-12-09 15:40:29,006 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 10944 transitions. [2023-12-09 15:40:29,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 10944 transitions. [2023-12-09 15:40:29,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:40:29,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 10944 transitions. [2023-12-09 15:40:29,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 149.91780821917808) internal successors, (10944), 73 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:29,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 181.0) internal successors, (13394), 74 states have internal predecessors, (13394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:29,031 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 181.0) internal successors, (13394), 74 states have internal predecessors, (13394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:29,031 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 517 predicate places. [2023-12-09 15:40:29,031 INFO L500 AbstractCegarLoop]: Abstraction has has 679 places, 2878 transitions, 61156 flow [2023-12-09 15:40:29,032 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 146.75) internal successors, (2935), 20 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:29,032 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:40:29,032 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:40:29,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-09 15:40:29,237 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:29,237 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:40:29,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:40:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash 436686306, now seen corresponding path program 5 times [2023-12-09 15:40:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:40:29,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751898623] [2023-12-09 15:40:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:40:29,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:40:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:40:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:29,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:40:29,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751898623] [2023-12-09 15:40:29,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751898623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:40:29,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737343898] [2023-12-09 15:40:29,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:40:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:29,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:40:29,463 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:40:29,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-09 15:40:29,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:40:29,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:40:29,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:40:29,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:40:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:30,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:40:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:30,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737343898] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:40:30,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:40:30,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2023-12-09 15:40:30,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868289475] [2023-12-09 15:40:30,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:40:30,495 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:40:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:40:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:40:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:40:30,497 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:40:30,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 2878 transitions, 61156 flow. Second operand has 24 states, 24 states have (on average 146.66666666666666) internal successors, (3520), 24 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:30,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:40:30,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:40:30,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:40:44,044 INFO L124 PetriNetUnfolderBase]: 23661/47441 cut-off events. [2023-12-09 15:40:44,044 INFO L125 PetriNetUnfolderBase]: For 1100451/1109853 co-relation queries the response was YES. [2023-12-09 15:40:44,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413448 conditions, 47441 events. 23661/47441 cut-off events. For 1100451/1109853 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 504718 event pairs, 4168 based on Foata normal form. 46/43591 useless extension candidates. Maximal degree in co-relation 298664. Up to 15691 conditions per place. [2023-12-09 15:40:44,732 INFO L140 encePairwiseOnDemand]: 166/181 looper letters, 676 selfloop transitions, 433 changer transitions 815/2928 dead transitions. [2023-12-09 15:40:44,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 2928 transitions, 65152 flow [2023-12-09 15:40:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:40:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:40:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4835 transitions. [2023-12-09 15:40:44,737 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8347720994475138 [2023-12-09 15:40:44,737 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4835 transitions. [2023-12-09 15:40:44,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4835 transitions. [2023-12-09 15:40:44,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:40:44,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4835 transitions. [2023-12-09 15:40:44,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 151.09375) internal successors, (4835), 32 states have internal predecessors, (4835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:44,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 181.0) internal successors, (5973), 33 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:44,749 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 181.0) internal successors, (5973), 33 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:44,750 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 546 predicate places. [2023-12-09 15:40:44,750 INFO L500 AbstractCegarLoop]: Abstraction has has 708 places, 2928 transitions, 65152 flow [2023-12-09 15:40:44,750 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 146.66666666666666) internal successors, (3520), 24 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:44,750 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:40:44,751 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:40:44,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-09 15:40:44,960 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:44,961 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:40:44,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:40:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 443207114, now seen corresponding path program 6 times [2023-12-09 15:40:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:40:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074935090] [2023-12-09 15:40:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:40:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:40:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:40:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:40:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074935090] [2023-12-09 15:40:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074935090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:40:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398772724] [2023-12-09 15:40:45,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:40:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:40:45,164 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:40:45,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-09 15:40:45,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:40:45,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:40:45,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:40:45,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:40:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:45,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:40:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:40:45,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398772724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:40:45,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:40:45,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-12-09 15:40:45,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950454442] [2023-12-09 15:40:45,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:40:45,662 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:40:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:40:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:40:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:40:45,664 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:40:45,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 2928 transitions, 65152 flow. Second operand has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:45,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:40:45,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:40:45,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:41:00,682 INFO L124 PetriNetUnfolderBase]: 26075/52468 cut-off events. [2023-12-09 15:41:00,682 INFO L125 PetriNetUnfolderBase]: For 1286671/1297506 co-relation queries the response was YES. [2023-12-09 15:41:00,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470532 conditions, 52468 events. 26075/52468 cut-off events. For 1286671/1297506 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 566928 event pairs, 4342 based on Foata normal form. 38/48179 useless extension candidates. Maximal degree in co-relation 334216. Up to 16462 conditions per place. [2023-12-09 15:41:01,277 INFO L140 encePairwiseOnDemand]: 166/181 looper letters, 810 selfloop transitions, 438 changer transitions 902/3154 dead transitions. [2023-12-09 15:41:01,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 734 places, 3154 transitions, 74967 flow [2023-12-09 15:41:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:41:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:41:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4064 transitions. [2023-12-09 15:41:01,280 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8315940249641907 [2023-12-09 15:41:01,280 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4064 transitions. [2023-12-09 15:41:01,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4064 transitions. [2023-12-09 15:41:01,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:41:01,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4064 transitions. [2023-12-09 15:41:01,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 150.5185185185185) internal successors, (4064), 27 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:01,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 181.0) internal successors, (5068), 28 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:01,288 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 181.0) internal successors, (5068), 28 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:01,289 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 572 predicate places. [2023-12-09 15:41:01,289 INFO L500 AbstractCegarLoop]: Abstraction has has 734 places, 3154 transitions, 74967 flow [2023-12-09 15:41:01,289 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:01,289 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:41:01,290 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:41:01,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-09 15:41:01,495 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:41:01,495 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:41:01,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:41:01,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1158892386, now seen corresponding path program 7 times [2023-12-09 15:41:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:41:01,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975088934] [2023-12-09 15:41:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:41:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:41:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:41:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:01,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:41:01,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975088934] [2023-12-09 15:41:01,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975088934] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:41:01,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444171418] [2023-12-09 15:41:01,721 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:41:01,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:41:01,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:41:01,722 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:41:01,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-09 15:41:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:41:02,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:41:02,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:41:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:02,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:41:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:02,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444171418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:41:02,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:41:02,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-12-09 15:41:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495523343] [2023-12-09 15:41:02,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:41:02,635 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:41:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:41:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:41:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:41:02,637 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:41:02,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 3154 transitions, 74967 flow. Second operand has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:02,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:41:02,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:41:02,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:41:22,064 INFO L124 PetriNetUnfolderBase]: 30566/61217 cut-off events. [2023-12-09 15:41:22,064 INFO L125 PetriNetUnfolderBase]: For 1582621/1595217 co-relation queries the response was YES. [2023-12-09 15:41:22,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566906 conditions, 61217 events. 30566/61217 cut-off events. For 1582621/1595217 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 674987 event pairs, 5224 based on Foata normal form. 66/56419 useless extension candidates. Maximal degree in co-relation 403353. Up to 18686 conditions per place. [2023-12-09 15:41:22,933 INFO L140 encePairwiseOnDemand]: 165/181 looper letters, 868 selfloop transitions, 563 changer transitions 1006/3441 dead transitions. [2023-12-09 15:41:22,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 3441 transitions, 86978 flow [2023-12-09 15:41:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:41:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:41:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6589 transitions. [2023-12-09 15:41:22,936 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8273480662983426 [2023-12-09 15:41:22,936 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6589 transitions. [2023-12-09 15:41:22,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6589 transitions. [2023-12-09 15:41:22,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:41:22,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6589 transitions. [2023-12-09 15:41:22,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 149.75) internal successors, (6589), 44 states have internal predecessors, (6589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:22,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 181.0) internal successors, (8145), 45 states have internal predecessors, (8145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:22,944 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 181.0) internal successors, (8145), 45 states have internal predecessors, (8145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:22,945 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 615 predicate places. [2023-12-09 15:41:22,945 INFO L500 AbstractCegarLoop]: Abstraction has has 777 places, 3441 transitions, 86978 flow [2023-12-09 15:41:22,945 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:22,945 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:41:22,946 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:41:22,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-09 15:41:23,152 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:41:23,152 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:41:23,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:41:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash -191213190, now seen corresponding path program 8 times [2023-12-09 15:41:23,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:41:23,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66641270] [2023-12-09 15:41:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:41:23,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:41:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:41:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:41:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66641270] [2023-12-09 15:41:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66641270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:41:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6467527] [2023-12-09 15:41:23,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:41:23,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:41:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:41:23,373 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:41:23,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-09 15:41:23,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:41:23,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:41:23,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:41:23,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:41:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:23,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:41:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:24,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6467527] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:41:24,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:41:24,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-12-09 15:41:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47592854] [2023-12-09 15:41:24,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:41:24,010 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:41:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:41:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:41:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:41:24,012 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:41:24,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 3441 transitions, 86978 flow. Second operand has 19 states, 19 states have (on average 146.78947368421052) internal successors, (2789), 19 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:24,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:41:24,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:41:24,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:41:48,129 INFO L124 PetriNetUnfolderBase]: 33486/67076 cut-off events. [2023-12-09 15:41:48,129 INFO L125 PetriNetUnfolderBase]: For 1846318/1859470 co-relation queries the response was YES. [2023-12-09 15:41:48,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636140 conditions, 67076 events. 33486/67076 cut-off events. For 1846318/1859470 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 748635 event pairs, 5480 based on Foata normal form. 78/61938 useless extension candidates. Maximal degree in co-relation 449388. Up to 20130 conditions per place. [2023-12-09 15:41:49,082 INFO L140 encePairwiseOnDemand]: 166/181 looper letters, 874 selfloop transitions, 693 changer transitions 1097/3668 dead transitions. [2023-12-09 15:41:49,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 3668 transitions, 98412 flow [2023-12-09 15:41:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-09 15:41:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-12-09 15:41:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7498 transitions. [2023-12-09 15:41:49,086 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8285082872928177 [2023-12-09 15:41:49,086 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7498 transitions. [2023-12-09 15:41:49,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7498 transitions. [2023-12-09 15:41:49,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:41:49,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7498 transitions. [2023-12-09 15:41:49,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 149.96) internal successors, (7498), 50 states have internal predecessors, (7498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:49,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 181.0) internal successors, (9231), 51 states have internal predecessors, (9231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:49,098 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 181.0) internal successors, (9231), 51 states have internal predecessors, (9231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:49,099 INFO L308 CegarLoopForPetriNet]: 162 programPoint places, 664 predicate places. [2023-12-09 15:41:49,099 INFO L500 AbstractCegarLoop]: Abstraction has has 826 places, 3668 transitions, 98412 flow [2023-12-09 15:41:49,099 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.78947368421052) internal successors, (2789), 19 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:49,099 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:41:49,099 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:41:49,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-09 15:41:49,305 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:41:49,306 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:41:49,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:41:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash 236468194, now seen corresponding path program 9 times [2023-12-09 15:41:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:41:49,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273617318] [2023-12-09 15:41:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:41:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:41:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:41:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:41:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273617318] [2023-12-09 15:41:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273617318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:41:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879902120] [2023-12-09 15:41:49,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:41:49,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:41:49,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:41:49,533 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:41:49,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-09 15:41:49,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:41:49,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:41:49,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:41:49,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:41:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:49,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:41:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:41:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879902120] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:41:50,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:41:50,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-12-09 15:41:50,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223990728] [2023-12-09 15:41:50,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:41:50,237 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:41:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:41:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:41:50,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:41:50,239 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 181 [2023-12-09 15:41:50,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 3668 transitions, 98412 flow. Second operand has 20 states, 20 states have (on average 146.75) internal successors, (2935), 20 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:41:50,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:41:50,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 181 [2023-12-09 15:41:50,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand