/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:01:08,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:01:09,089 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 [2023-11-10 12:01:09,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:01:09,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:01:09,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:01:09,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:01:09,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:01:09,134 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:01:09,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:01:09,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:01:09,138 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:01:09,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:01:09,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:01:09,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:01:09,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:01:09,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:01:09,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:01:09,140 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:01:09,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:01:09,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:01:09,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:01:09,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:01:09,141 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:01:09,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:01:09,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:01:09,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:01:09,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:01:09,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:01:09,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:01:09,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:01:09,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:01:09,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:01:09,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:01:09,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:01:09,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:01:09,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:01:09,483 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:01:09,485 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:01:09,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-11-10 12:01:10,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:01:10,844 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:01:10,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-11-10 12:01:10,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b325d05/7a74d393998c44a0b0f83fee688ace3c/FLAG6b5c08fa9 [2023-11-10 12:01:11,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b325d05/7a74d393998c44a0b0f83fee688ace3c [2023-11-10 12:01:11,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:01:11,231 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:01:11,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:01:11,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:01:11,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:01:11,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b23826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11, skipping insertion in model container [2023-11-10 12:01:11,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:01:11,757 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-10 12:01:11,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:01:11,796 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:01:11,824 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-10 12:01:11,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:01:11,900 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:01:11,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11 WrapperNode [2023-11-10 12:01:11,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:01:11,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:01:11,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:01:11,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:01:11,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,963 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 209 [2023-11-10 12:01:11,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:01:11,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:01:11,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:01:11,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:01:11,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:11,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:12,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:12,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:01:12,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:01:12,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:01:12,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:01:12,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (1/1) ... [2023-11-10 12:01:12,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:01:12,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:01:12,288 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) [2023-11-10 12:01:12,305 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 [2023-11-10 12:01:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:01:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-10 12:01:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-10 12:01:12,315 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-10 12:01:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:01:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:01:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-10 12:01:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-10 12:01:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:01:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-10 12:01:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:01:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:01:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-10 12:01:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:01:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:01:12,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:01:12,318 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:01:12,481 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:01:12,483 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:01:12,737 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:01:12,744 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:01:12,745 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-10 12:01:12,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:01:12 BoogieIcfgContainer [2023-11-10 12:01:12,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:01:12,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:01:12,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:01:12,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:01:12,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:01:11" (1/3) ... [2023-11-10 12:01:12,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec81ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:01:12, skipping insertion in model container [2023-11-10 12:01:12,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:11" (2/3) ... [2023-11-10 12:01:12,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec81ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:01:12, skipping insertion in model container [2023-11-10 12:01:12,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:01:12" (3/3) ... [2023-11-10 12:01:12,753 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-10 12:01:12,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:01:12,781 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:01:12,781 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:01:12,870 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-10 12:01:12,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 223 transitions, 466 flow [2023-11-10 12:01:13,003 INFO L124 PetriNetUnfolderBase]: 52/429 cut-off events. [2023-11-10 12:01:13,003 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-10 12:01:13,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 429 events. 52/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1752 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-11-10 12:01:13,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 223 transitions, 466 flow [2023-11-10 12:01:13,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 221 transitions, 456 flow [2023-11-10 12:01:13,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:13,048 INFO L357 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=false, 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;@6c11c513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:13,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 12:01:13,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:13,065 INFO L124 PetriNetUnfolderBase]: 7/112 cut-off events. [2023-11-10 12:01:13,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 12:01:13,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:13,066 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:01:13,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:01:13,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:13,071 INFO L85 PathProgramCache]: Analyzing trace with hash 441561510, now seen corresponding path program 1 times [2023-11-10 12:01:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:13,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575917656] [2023-11-10 12:01:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:13,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:13,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:13,249 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:13,249 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-10 12:01:13,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-10 12:01:13,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-10 12:01:13,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-10 12:01:13,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:01:13,252 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 12:01:13,254 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:13,254 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-10 12:01:13,314 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-10 12:01:13,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 345 transitions, 734 flow [2023-11-10 12:01:13,533 INFO L124 PetriNetUnfolderBase]: 191/1272 cut-off events. [2023-11-10 12:01:13,533 INFO L125 PetriNetUnfolderBase]: For 72/83 co-relation queries the response was YES. [2023-11-10 12:01:13,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 1272 events. 191/1272 cut-off events. For 72/83 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8068 event pairs, 2 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 794. Up to 32 conditions per place. [2023-11-10 12:01:13,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 345 transitions, 734 flow [2023-11-10 12:01:13,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 345 transitions, 734 flow [2023-11-10 12:01:13,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:13,569 INFO L357 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=false, 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;@6c11c513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:13,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 12:01:13,587 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:13,587 INFO L124 PetriNetUnfolderBase]: 17/242 cut-off events. [2023-11-10 12:01:13,587 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-10 12:01:13,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:13,588 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-11-10 12:01:13,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:01:13,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash -953198299, now seen corresponding path program 1 times [2023-11-10 12:01:13,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:13,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780558103] [2023-11-10 12:01:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:13,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:13,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:13,715 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:13,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-10 12:01:13,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-10 12:01:13,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-10 12:01:13,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-10 12:01:13,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-10 12:01:13,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:01:13,720 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 12:01:13,721 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:13,721 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-10 12:01:13,834 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-10 12:01:13,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 467 transitions, 1006 flow [2023-11-10 12:01:15,116 INFO L124 PetriNetUnfolderBase]: 664/3557 cut-off events. [2023-11-10 12:01:15,116 INFO L125 PetriNetUnfolderBase]: For 419/448 co-relation queries the response was YES. [2023-11-10 12:01:15,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 3557 events. 664/3557 cut-off events. For 419/448 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 27736 event pairs, 32 based on Foata normal form. 0/3062 useless extension candidates. Maximal degree in co-relation 2300. Up to 192 conditions per place. [2023-11-10 12:01:15,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 467 transitions, 1006 flow [2023-11-10 12:01:15,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 467 transitions, 1006 flow [2023-11-10 12:01:15,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:15,330 INFO L357 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=false, 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;@6c11c513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:15,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-10 12:01:15,446 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:15,446 INFO L124 PetriNetUnfolderBase]: 40/498 cut-off events. [2023-11-10 12:01:15,446 INFO L125 PetriNetUnfolderBase]: For 22/32 co-relation queries the response was YES. [2023-11-10 12:01:15,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:15,448 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:01:15,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-10 12:01:15,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1777480305, now seen corresponding path program 1 times [2023-11-10 12:01:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:15,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43581249] [2023-11-10 12:01:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:15,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:15,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:15,523 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:15,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-10 12:01:15,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-10 12:01:15,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-10 12:01:15,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-10 12:01:15,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-10 12:01:15,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-10 12:01:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 12:01:15,524 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 12:01:15,524 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:15,524 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-10 12:01:15,600 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-11-10 12:01:15,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 526 places, 589 transitions, 1282 flow [2023-11-10 12:01:19,849 INFO L124 PetriNetUnfolderBase]: 2659/11280 cut-off events. [2023-11-10 12:01:19,850 INFO L125 PetriNetUnfolderBase]: For 2144/2200 co-relation queries the response was YES. [2023-11-10 12:01:20,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13421 conditions, 11280 events. 2659/11280 cut-off events. For 2144/2200 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 106234 event pairs, 313 based on Foata normal form. 0/9866 useless extension candidates. Maximal degree in co-relation 7169. Up to 1024 conditions per place. [2023-11-10 12:01:20,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 526 places, 589 transitions, 1282 flow [2023-11-10 12:01:20,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 589 transitions, 1282 flow [2023-11-10 12:01:20,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:20,420 INFO L357 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=false, 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;@6c11c513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:20,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-10 12:01:20,463 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:20,463 INFO L124 PetriNetUnfolderBase]: 45/550 cut-off events. [2023-11-10 12:01:20,463 INFO L125 PetriNetUnfolderBase]: For 25/37 co-relation queries the response was YES. [2023-11-10 12:01:20,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:20,464 INFO L208 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] [2023-11-10 12:01:20,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 12:01:20,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 360736710, now seen corresponding path program 1 times [2023-11-10 12:01:20,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:20,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438028098] [2023-11-10 12:01:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:01:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:01:20,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:01:20,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438028098] [2023-11-10 12:01:20,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438028098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:01:20,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:01:20,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:01:20,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324971292] [2023-11-10 12:01:20,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:01:20,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:01:20,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:01:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:01:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:01:20,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 500 out of 589 [2023-11-10 12:01:20,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 589 transitions, 1282 flow. Second operand has 3 states, 3 states have (on average 502.0) internal successors, (1506), 3 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:01:20,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:01:20,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 500 of 589 [2023-11-10 12:01:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:01:25,272 INFO L124 PetriNetUnfolderBase]: 1860/10110 cut-off events. [2023-11-10 12:01:25,272 INFO L125 PetriNetUnfolderBase]: For 6388/7921 co-relation queries the response was YES. [2023-11-10 12:01:25,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14590 conditions, 10110 events. 1860/10110 cut-off events. For 6388/7921 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 99388 event pairs, 324 based on Foata normal form. 18626/28078 useless extension candidates. Maximal degree in co-relation 7712. Up to 2348 conditions per place. [2023-11-10 12:01:25,832 INFO L140 encePairwiseOnDemand]: 534/589 looper letters, 35 selfloop transitions, 2 changer transitions 0/537 dead transitions. [2023-11-10 12:01:25,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 537 transitions, 1252 flow [2023-11-10 12:01:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:01:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:01:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1591 transitions. [2023-11-10 12:01:25,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9003961516694963 [2023-11-10 12:01:25,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1591 transitions. [2023-11-10 12:01:25,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1591 transitions. [2023-11-10 12:01:25,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:01:25,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1591 transitions. [2023-11-10 12:01:25,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 530.3333333333334) internal successors, (1591), 3 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:01:25,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:01:25,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:01:25,918 INFO L175 Difference]: Start difference. First operand has 526 places, 589 transitions, 1282 flow. Second operand 3 states and 1591 transitions. [2023-11-10 12:01:25,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 537 transitions, 1252 flow [2023-11-10 12:01:25,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 537 transitions, 1252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:01:25,973 INFO L231 Difference]: Finished difference. Result has 525 places, 534 transitions, 1182 flow [2023-11-10 12:01:25,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1182, PETRI_PLACES=525, PETRI_TRANSITIONS=534} [2023-11-10 12:01:25,979 INFO L281 CegarLoopForPetriNet]: 526 programPoint places, -1 predicate places. [2023-11-10 12:01:25,980 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 534 transitions, 1182 flow [2023-11-10 12:01:25,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 502.0) internal successors, (1506), 3 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:01:25,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:25,981 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:01:25,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:01:25,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 12:01:25,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1119136860, now seen corresponding path program 1 times [2023-11-10 12:01:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639328680] [2023-11-10 12:01:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:26,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:26,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:26,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:26,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-10 12:01:26,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-10 12:01:26,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-10 12:01:26,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-10 12:01:26,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-10 12:01:26,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-10 12:01:26,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-10 12:01:26,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:01:26,180 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-10 12:01:26,182 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:26,182 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-10 12:01:26,390 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-11-10 12:01:26,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 633 places, 711 transitions, 1562 flow [2023-11-10 12:01:50,827 INFO L124 PetriNetUnfolderBase]: 11792/41289 cut-off events. [2023-11-10 12:01:50,827 INFO L125 PetriNetUnfolderBase]: For 10450/10532 co-relation queries the response was YES. [2023-11-10 12:01:53,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51680 conditions, 41289 events. 11792/41289 cut-off events. For 10450/10532 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 463459 event pairs, 2148 based on Foata normal form. 0/36617 useless extension candidates. Maximal degree in co-relation 25988. Up to 5120 conditions per place. [2023-11-10 12:01:53,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 633 places, 711 transitions, 1562 flow [2023-11-10 12:01:54,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 633 places, 711 transitions, 1562 flow [2023-11-10 12:01:54,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:54,615 INFO L357 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=false, 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;@6c11c513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:54,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-10 12:01:54,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:54,653 INFO L124 PetriNetUnfolderBase]: 44/549 cut-off events. [2023-11-10 12:01:54,653 INFO L125 PetriNetUnfolderBase]: For 25/35 co-relation queries the response was YES. [2023-11-10 12:01:54,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:54,653 INFO L208 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] [2023-11-10 12:01:54,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-10 12:01:54,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1047655590, now seen corresponding path program 1 times [2023-11-10 12:01:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:54,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659607949] [2023-11-10 12:01:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:54,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:01:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:01:54,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:01:54,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659607949] [2023-11-10 12:01:54,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659607949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:01:54,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:01:54,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:01:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001144807] [2023-11-10 12:01:54,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:01:54,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:01:54,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:01:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:01:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:01:54,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 711 [2023-11-10 12:01:54,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 711 transitions, 1562 flow. Second operand has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:01:54,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:01:54,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 711 [2023-11-10 12:01:54,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:02:14,403 INFO L124 PetriNetUnfolderBase]: 9321/38352 cut-off events. [2023-11-10 12:02:14,404 INFO L125 PetriNetUnfolderBase]: For 31452/34859 co-relation queries the response was YES. [2023-11-10 12:02:16,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60052 conditions, 38352 events. 9321/38352 cut-off events. For 31452/34859 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 449438 event pairs, 2174 based on Foata normal form. 93735/129806 useless extension candidates. Maximal degree in co-relation 29748. Up to 11324 conditions per place. [2023-11-10 12:02:17,210 INFO L140 encePairwiseOnDemand]: 644/711 looper letters, 41 selfloop transitions, 2 changer transitions 0/646 dead transitions. [2023-11-10 12:02:17,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 646 transitions, 1518 flow [2023-11-10 12:02:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:02:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:02:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1918 transitions. [2023-11-10 12:02:17,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8992030004688233 [2023-11-10 12:02:17,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1918 transitions. [2023-11-10 12:02:17,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1918 transitions. [2023-11-10 12:02:17,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:02:17,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1918 transitions. [2023-11-10 12:02:17,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:17,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:17,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:17,222 INFO L175 Difference]: Start difference. First operand has 633 places, 711 transitions, 1562 flow. Second operand 3 states and 1918 transitions. [2023-11-10 12:02:17,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 646 transitions, 1518 flow [2023-11-10 12:02:17,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 646 transitions, 1518 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:02:17,244 INFO L231 Difference]: Finished difference. Result has 631 places, 643 transitions, 1436 flow [2023-11-10 12:02:17,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1436, PETRI_PLACES=631, PETRI_TRANSITIONS=643} [2023-11-10 12:02:17,245 INFO L281 CegarLoopForPetriNet]: 633 programPoint places, -2 predicate places. [2023-11-10 12:02:17,245 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 643 transitions, 1436 flow [2023-11-10 12:02:17,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:17,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:17,246 INFO L208 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] [2023-11-10 12:02:17,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 12:02:17,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-10 12:02:17,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1780544164, now seen corresponding path program 1 times [2023-11-10 12:02:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406718850] [2023-11-10 12:02:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:02:17,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:02:17,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406718850] [2023-11-10 12:02:17,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406718850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:02:17,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987810333] [2023-11-10 12:02:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:17,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:02:17,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:02:17,335 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) [2023-11-10 12:02:17,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:02:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:17,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-10 12:02:17,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:02:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:02:17,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:02:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:02:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987810333] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:02:17,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:02:17,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-10 12:02:17,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119998227] [2023-11-10 12:02:17,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:02:17,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:02:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:02:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:02:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:02:17,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 711 [2023-11-10 12:02:17,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 643 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 604.5) internal successors, (6045), 10 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:17,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:02:17,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 711 [2023-11-10 12:02:17,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:02:35,629 INFO L124 PetriNetUnfolderBase]: 9279/37438 cut-off events. [2023-11-10 12:02:35,629 INFO L125 PetriNetUnfolderBase]: For 31261/33508 co-relation queries the response was YES. [2023-11-10 12:02:39,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59101 conditions, 37438 events. 9279/37438 cut-off events. For 31261/33508 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 439549 event pairs, 2354 based on Foata normal form. 16/35270 useless extension candidates. Maximal degree in co-relation 59021. Up to 11293 conditions per place. [2023-11-10 12:02:40,045 INFO L140 encePairwiseOnDemand]: 705/711 looper letters, 42 selfloop transitions, 9 changer transitions 0/653 dead transitions. [2023-11-10 12:02:40,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 653 transitions, 1560 flow [2023-11-10 12:02:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:02:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:02:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5471 transitions. [2023-11-10 12:02:40,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8549773402094077 [2023-11-10 12:02:40,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5471 transitions. [2023-11-10 12:02:40,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5471 transitions. [2023-11-10 12:02:40,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:02:40,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5471 transitions. [2023-11-10 12:02:40,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 607.8888888888889) internal successors, (5471), 9 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:40,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 711.0) internal successors, (7110), 10 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:40,075 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 711.0) internal successors, (7110), 10 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:40,075 INFO L175 Difference]: Start difference. First operand has 631 places, 643 transitions, 1436 flow. Second operand 9 states and 5471 transitions. [2023-11-10 12:02:40,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 653 transitions, 1560 flow [2023-11-10 12:02:40,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 653 transitions, 1558 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 12:02:40,089 INFO L231 Difference]: Finished difference. Result has 641 places, 649 transitions, 1484 flow [2023-11-10 12:02:40,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1484, PETRI_PLACES=641, PETRI_TRANSITIONS=649} [2023-11-10 12:02:40,091 INFO L281 CegarLoopForPetriNet]: 633 programPoint places, 8 predicate places. [2023-11-10 12:02:40,092 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 649 transitions, 1484 flow [2023-11-10 12:02:40,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 604.5) internal successors, (6045), 10 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:40,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:40,095 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:02:40,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:02:40,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:02:40,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-10 12:02:40,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1277108260, now seen corresponding path program 1 times [2023-11-10 12:02:40,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:40,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220287017] [2023-11-10 12:02:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:02:40,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:02:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:02:40,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:02:40,434 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:02:40,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-10 12:02:40,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-10 12:02:40,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-11-10 12:02:40,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-10 12:02:40,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-10 12:02:40,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-10 12:02:40,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-11-10 12:02:40,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-11-10 12:02:40,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 12:02:40,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-10 12:02:40,437 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:02:40,437 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-10 12:02:40,598 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-11-10 12:02:40,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 740 places, 833 transitions, 1846 flow