/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_82-list_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:01:15,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:01:15,593 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 12:01:15,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:01:15,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:01:15,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:01:15,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:01:15,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:01:15,629 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:01:15,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:01:15,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:01:15,633 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:01:15,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:01:15,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:01:15,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:01:15,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:01:15,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:01:15,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:01:15,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:01:15,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:01:15,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:01:15,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:01:15,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:01:15,638 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:01:15,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:01:15,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:01:15,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:01:15,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:01:15,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:01:15,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:01:15,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:01:15,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:01:15,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:01:15,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:01:15,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:01:15,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:01:15,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:01:15,899 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:01:15,900 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:01:15,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-10 12:01:17,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:01:17,419 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:01:17,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-10 12:01:17,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6bf243a/f8eeca01743343adb14aaad5d758f392/FLAG5edd449f6 [2023-11-10 12:01:17,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6bf243a/f8eeca01743343adb14aaad5d758f392 [2023-11-10 12:01:17,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:01:17,471 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:01:17,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:01:17,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:01:17,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:01:17,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:01:17" (1/1) ... [2023-11-10 12:01:17,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76965a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:17, skipping insertion in model container [2023-11-10 12:01:17,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:01:17" (1/1) ... [2023-11-10 12:01:17,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:01:17,950 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_82-list_racefree.i[47038,47051] [2023-11-10 12:01:17,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:01:18,008 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:01:18,048 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_82-list_racefree.i[47038,47051] [2023-11-10 12:01:18,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:01:18,115 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:01:18,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18 WrapperNode [2023-11-10 12:01:18,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:01:18,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:01:18,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:01:18,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:01:18,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,179 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 211 [2023-11-10 12:01:18,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:01:18,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:01:18,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:01:18,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:01:18,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:01:18,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:01:18,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:01:18,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:01:18,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (1/1) ... [2023-11-10 12:01:18,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:01:18,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:01:18,251 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 12:01:18,273 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 12:01:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:01:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-10 12:01:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-10 12:01:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-10 12:01:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:01:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:01:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-10 12:01:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-10 12:01:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:01:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-10 12:01:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:01:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:01:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-10 12:01:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:01:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:01:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:01:18,302 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 12:01:18,471 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:01:18,473 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:01:18,827 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:01:18,838 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:01:18,838 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-10 12:01:18,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:01:18 BoogieIcfgContainer [2023-11-10 12:01:18,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:01:18,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:01:18,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:01:18,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:01:18,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:01:17" (1/3) ... [2023-11-10 12:01:18,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22367a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:01:18, skipping insertion in model container [2023-11-10 12:01:18,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:01:18" (2/3) ... [2023-11-10 12:01:18,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22367a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:01:18, skipping insertion in model container [2023-11-10 12:01:18,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:01:18" (3/3) ... [2023-11-10 12:01:18,857 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-11-10 12:01:18,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:01:18,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:01:18,875 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:01:18,997 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-10 12:01:19,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 223 transitions, 466 flow [2023-11-10 12:01:19,173 INFO L124 PetriNetUnfolderBase]: 52/432 cut-off events. [2023-11-10 12:01:19,173 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-10 12:01:19,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 432 events. 52/432 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1773 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-11-10 12:01:19,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 223 transitions, 466 flow [2023-11-10 12:01:19,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 221 transitions, 456 flow [2023-11-10 12:01:19,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:19,228 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;@771bfc9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:19,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 12:01:19,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:19,259 INFO L124 PetriNetUnfolderBase]: 7/116 cut-off events. [2023-11-10 12:01:19,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 12:01:19,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:19,260 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] [2023-11-10 12:01:19,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:01:19,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash -89454245, now seen corresponding path program 1 times [2023-11-10 12:01:19,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:19,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614756043] [2023-11-10 12:01:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:19,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:19,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:19,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:19,630 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-10 12:01:19,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-10 12:01:19,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-10 12:01:19,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-10 12:01:19,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:01:19,633 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 12:01:19,636 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:19,636 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-10 12:01:19,729 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-10 12:01:19,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 348 transitions, 740 flow [2023-11-10 12:01:20,085 INFO L124 PetriNetUnfolderBase]: 191/1287 cut-off events. [2023-11-10 12:01:20,085 INFO L125 PetriNetUnfolderBase]: For 72/86 co-relation queries the response was YES. [2023-11-10 12:01:20,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1287 events. 191/1287 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8156 event pairs, 1 based on Foata normal form. 0/1095 useless extension candidates. Maximal degree in co-relation 803. Up to 32 conditions per place. [2023-11-10 12:01:20,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 348 transitions, 740 flow [2023-11-10 12:01:20,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 348 transitions, 740 flow [2023-11-10 12:01:20,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:20,115 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;@771bfc9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:20,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 12:01:20,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:20,141 INFO L124 PetriNetUnfolderBase]: 17/252 cut-off events. [2023-11-10 12:01:20,141 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-10 12:01:20,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:20,141 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] [2023-11-10 12:01:20,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:01:20,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2013705476, now seen corresponding path program 1 times [2023-11-10 12:01:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:20,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880631651] [2023-11-10 12:01:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:20,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:20,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:20,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:20,273 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:20,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-10 12:01:20,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-10 12:01:20,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-10 12:01:20,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-10 12:01:20,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-10 12:01:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:01:20,275 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 12:01:20,276 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:20,276 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-10 12:01:20,401 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-10 12:01:20,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 473 transitions, 1018 flow [2023-11-10 12:01:21,685 INFO L124 PetriNetUnfolderBase]: 664/3590 cut-off events. [2023-11-10 12:01:21,685 INFO L125 PetriNetUnfolderBase]: For 419/468 co-relation queries the response was YES. [2023-11-10 12:01:21,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 3590 events. 664/3590 cut-off events. For 419/468 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 28269 event pairs, 32 based on Foata normal form. 0/3087 useless extension candidates. Maximal degree in co-relation 2324. Up to 192 conditions per place. [2023-11-10 12:01:21,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 473 transitions, 1018 flow [2023-11-10 12:01:21,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 473 transitions, 1018 flow [2023-11-10 12:01:21,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:21,853 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;@771bfc9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:21,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-10 12:01:21,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:21,915 INFO L124 PetriNetUnfolderBase]: 40/494 cut-off events. [2023-11-10 12:01:21,916 INFO L125 PetriNetUnfolderBase]: For 22/36 co-relation queries the response was YES. [2023-11-10 12:01:21,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:21,916 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] [2023-11-10 12:01:21,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-10 12:01:21,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1638844891, now seen corresponding path program 1 times [2023-11-10 12:01:21,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:21,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995996841] [2023-11-10 12:01:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:21,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:22,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:22,028 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:22,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-10 12:01:22,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-10 12:01:22,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-10 12:01:22,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-10 12:01:22,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-10 12:01:22,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-10 12:01:22,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 12:01:22,037 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 12:01:22,041 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:22,041 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-10 12:01:22,155 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-11-10 12:01:22,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 598 transitions, 1300 flow [2023-11-10 12:01:27,461 INFO L124 PetriNetUnfolderBase]: 2659/11337 cut-off events. [2023-11-10 12:01:27,462 INFO L125 PetriNetUnfolderBase]: For 2144/2243 co-relation queries the response was YES. [2023-11-10 12:01:27,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13478 conditions, 11337 events. 2659/11337 cut-off events. For 2144/2243 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 106271 event pairs, 313 based on Foata normal form. 0/9909 useless extension candidates. Maximal degree in co-relation 7214. Up to 1024 conditions per place. [2023-11-10 12:01:27,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 598 transitions, 1300 flow [2023-11-10 12:01:28,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 598 transitions, 1300 flow [2023-11-10 12:01:28,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:28,153 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;@771bfc9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:28,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-10 12:01:28,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:28,222 INFO L124 PetriNetUnfolderBase]: 46/602 cut-off events. [2023-11-10 12:01:28,222 INFO L125 PetriNetUnfolderBase]: For 38/52 co-relation queries the response was YES. [2023-11-10 12:01:28,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:28,222 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] [2023-11-10 12:01:28,223 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 12:01:28,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash -765317513, now seen corresponding path program 1 times [2023-11-10 12:01:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:28,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252514752] [2023-11-10 12:01:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:01:28,374 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 12:01:28,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:01:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252514752] [2023-11-10 12:01:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252514752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:01:28,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:01:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 12:01:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144674083] [2023-11-10 12:01:28,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:01:28,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-10 12:01:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:01:28,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-10 12:01:28,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-10 12:01:28,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 598 [2023-11-10 12:01:28,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 598 transitions, 1300 flow. Second operand has 2 states, 2 states have (on average 519.0) internal successors, (1038), 2 states have internal predecessors, (1038), 0 states have call successors, (0), 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 12:01:28,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:01:28,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 598 [2023-11-10 12:01:28,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:01:33,078 INFO L124 PetriNetUnfolderBase]: 1877/10535 cut-off events. [2023-11-10 12:01:33,079 INFO L125 PetriNetUnfolderBase]: For 6380/7636 co-relation queries the response was YES. [2023-11-10 12:01:33,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14749 conditions, 10535 events. 1877/10535 cut-off events. For 6380/7636 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 103754 event pairs, 313 based on Foata normal form. 12744/22559 useless extension candidates. Maximal degree in co-relation 7609. Up to 2073 conditions per place. [2023-11-10 12:01:33,437 INFO L140 encePairwiseOnDemand]: 546/598 looper letters, 24 selfloop transitions, 0 changer transitions 0/542 dead transitions. [2023-11-10 12:01:33,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 542 transitions, 1236 flow [2023-11-10 12:01:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-10 12:01:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-10 12:01:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1112 transitions. [2023-11-10 12:01:33,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9297658862876255 [2023-11-10 12:01:33,458 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1112 transitions. [2023-11-10 12:01:33,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1112 transitions. [2023-11-10 12:01:33,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:01:33,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1112 transitions. [2023-11-10 12:01:33,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 556.0) internal successors, (1112), 2 states have internal predecessors, (1112), 0 states have call successors, (0), 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 12:01:33,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 598.0) internal successors, (1794), 3 states have internal predecessors, (1794), 0 states have call successors, (0), 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 12:01:33,483 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 598.0) internal successors, (1794), 3 states have internal predecessors, (1794), 0 states have call successors, (0), 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 12:01:33,485 INFO L175 Difference]: Start difference. First operand has 535 places, 598 transitions, 1300 flow. Second operand 2 states and 1112 transitions. [2023-11-10 12:01:33,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 542 transitions, 1236 flow [2023-11-10 12:01:33,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 542 transitions, 1236 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:01:33,512 INFO L231 Difference]: Finished difference. Result has 532 places, 542 transitions, 1188 flow [2023-11-10 12:01:33,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1188, PETRI_PLACES=532, PETRI_TRANSITIONS=542} [2023-11-10 12:01:33,520 INFO L281 CegarLoopForPetriNet]: 535 programPoint places, -3 predicate places. [2023-11-10 12:01:33,521 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 542 transitions, 1188 flow [2023-11-10 12:01:33,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 519.0) internal successors, (1038), 2 states have internal predecessors, (1038), 0 states have call successors, (0), 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 12:01:33,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:33,522 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] [2023-11-10 12:01:33,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:01:33,522 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 12:01:33,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash 116222528, now seen corresponding path program 1 times [2023-11-10 12:01:33,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:33,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454574827] [2023-11-10 12:01:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:33,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:33,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:01:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:01:33,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:01:33,602 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:01:33,604 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-10 12:01:33,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-10 12:01:33,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-10 12:01:33,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-10 12:01:33,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-10 12:01:33,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-10 12:01:33,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-10 12:01:33,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:01:33,605 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-10 12:01:33,606 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:01:33,607 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-10 12:01:33,719 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-11-10 12:01:33,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 645 places, 723 transitions, 1586 flow [2023-11-10 12:01:54,225 INFO L124 PetriNetUnfolderBase]: 11792/41376 cut-off events. [2023-11-10 12:01:54,226 INFO L125 PetriNetUnfolderBase]: For 10450/10610 co-relation queries the response was YES. [2023-11-10 12:01:56,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51767 conditions, 41376 events. 11792/41376 cut-off events. For 10450/10610 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 461479 event pairs, 2148 based on Foata normal form. 0/36680 useless extension candidates. Maximal degree in co-relation 26060. Up to 5120 conditions per place. [2023-11-10 12:01:56,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 645 places, 723 transitions, 1586 flow [2023-11-10 12:01:57,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 645 places, 723 transitions, 1586 flow [2023-11-10 12:01:57,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:01:57,307 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;@771bfc9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:01:57,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-10 12:01:57,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:01:57,592 INFO L124 PetriNetUnfolderBase]: 46/585 cut-off events. [2023-11-10 12:01:57,592 INFO L125 PetriNetUnfolderBase]: For 35/49 co-relation queries the response was YES. [2023-11-10 12:01:57,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:01:57,592 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] [2023-11-10 12:01:57,592 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 12:01:57,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:01:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1463694465, now seen corresponding path program 1 times [2023-11-10 12:01:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:01:57,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184418981] [2023-11-10 12:01:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:01:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:01:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:01:57,651 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 12:01:57,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:01:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184418981] [2023-11-10 12:01:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184418981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:01:57,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:01:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 12:01:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823282219] [2023-11-10 12:01:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:01:57,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-10 12:01:57,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:01:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-10 12:01:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-10 12:01:57,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 624 out of 723 [2023-11-10 12:01:57,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 723 transitions, 1586 flow. Second operand has 2 states, 2 states have (on average 625.0) internal successors, (1250), 2 states have internal predecessors, (1250), 0 states have call successors, (0), 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 12:01:57,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:01:57,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 624 of 723 [2023-11-10 12:01:57,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:02:15,219 INFO L124 PetriNetUnfolderBase]: 9342/38896 cut-off events. [2023-11-10 12:02:15,220 INFO L125 PetriNetUnfolderBase]: For 31155/33933 co-relation queries the response was YES. [2023-11-10 12:02:16,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59563 conditions, 38896 events. 9342/38896 cut-off events. For 31155/33933 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 455691 event pairs, 2148 based on Foata normal form. 63401/99911 useless extension candidates. Maximal degree in co-relation 29281. Up to 10276 conditions per place. [2023-11-10 12:02:17,690 INFO L140 encePairwiseOnDemand]: 659/723 looper letters, 30 selfloop transitions, 0 changer transitions 0/654 dead transitions. [2023-11-10 12:02:17,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 654 transitions, 1508 flow [2023-11-10 12:02:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-10 12:02:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-10 12:02:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1342 transitions. [2023-11-10 12:02:17,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9280774550484094 [2023-11-10 12:02:17,694 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1342 transitions. [2023-11-10 12:02:17,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1342 transitions. [2023-11-10 12:02:17,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:02:17,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1342 transitions. [2023-11-10 12:02:17,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 671.0) internal successors, (1342), 2 states have internal predecessors, (1342), 0 states have call successors, (0), 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 12:02:17,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 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 12:02:17,702 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 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 12:02:17,702 INFO L175 Difference]: Start difference. First operand has 645 places, 723 transitions, 1586 flow. Second operand 2 states and 1342 transitions. [2023-11-10 12:02:17,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 654 transitions, 1508 flow [2023-11-10 12:02:17,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 654 transitions, 1508 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:02:17,725 INFO L231 Difference]: Finished difference. Result has 641 places, 654 transitions, 1448 flow [2023-11-10 12:02:17,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1448, PETRI_PLACES=641, PETRI_TRANSITIONS=654} [2023-11-10 12:02:17,727 INFO L281 CegarLoopForPetriNet]: 645 programPoint places, -4 predicate places. [2023-11-10 12:02:17,732 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 654 transitions, 1448 flow [2023-11-10 12:02:17,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 625.0) internal successors, (1250), 2 states have internal predecessors, (1250), 0 states have call successors, (0), 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 12:02:17,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:17,734 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] [2023-11-10 12:02:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 12:02:17,734 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 12:02:17,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1025154890, now seen corresponding path program 1 times [2023-11-10 12:02:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:17,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388993136] [2023-11-10 12:02:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:17,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:17,847 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 12:02:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:02:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388993136] [2023-11-10 12:02:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388993136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:02:17,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:02:17,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:02:17,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734499977] [2023-11-10 12:02:17,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:02:17,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:02:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:02:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:02:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:02:17,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 723 [2023-11-10 12:02:17,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 654 transitions, 1448 flow. Second operand has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 0 states have call successors, (0), 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 12:02:17,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:02:17,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 723 [2023-11-10 12:02:17,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:02:35,511 INFO L124 PetriNetUnfolderBase]: 9321/38424 cut-off events. [2023-11-10 12:02:35,511 INFO L125 PetriNetUnfolderBase]: For 31322/35243 co-relation queries the response was YES. [2023-11-10 12:02:37,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60125 conditions, 38424 events. 9321/38424 cut-off events. For 31322/35243 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 451088 event pairs, 2174 based on Foata normal form. 2/36081 useless extension candidates. Maximal degree in co-relation 60112. Up to 11324 conditions per place. [2023-11-10 12:02:38,370 INFO L140 encePairwiseOnDemand]: 720/723 looper letters, 41 selfloop transitions, 2 changer transitions 0/658 dead transitions. [2023-11-10 12:02:38,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 658 transitions, 1542 flow [2023-11-10 12:02:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:02:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:02:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1889 transitions. [2023-11-10 12:02:38,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8709082526509913 [2023-11-10 12:02:38,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1889 transitions. [2023-11-10 12:02:38,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1889 transitions. [2023-11-10 12:02:38,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:02:38,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1889 transitions. [2023-11-10 12:02:38,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 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 12:02:38,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 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 12:02:38,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 723.0) internal successors, (2892), 4 states have internal predecessors, (2892), 0 states have call successors, (0), 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 12:02:38,386 INFO L175 Difference]: Start difference. First operand has 641 places, 654 transitions, 1448 flow. Second operand 3 states and 1889 transitions. [2023-11-10 12:02:38,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 658 transitions, 1542 flow [2023-11-10 12:02:38,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 658 transitions, 1542 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:02:38,406 INFO L231 Difference]: Finished difference. Result has 644 places, 655 transitions, 1460 flow [2023-11-10 12:02:38,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=723, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1460, PETRI_PLACES=644, PETRI_TRANSITIONS=655} [2023-11-10 12:02:38,408 INFO L281 CegarLoopForPetriNet]: 645 programPoint places, -1 predicate places. [2023-11-10 12:02:38,408 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 655 transitions, 1460 flow [2023-11-10 12:02:38,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 0 states have call successors, (0), 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 12:02:38,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:38,410 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] [2023-11-10 12:02:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 12:02:38,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-10 12:02:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1043384173, now seen corresponding path program 1 times [2023-11-10 12:02:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593507692] [2023-11-10 12:02:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:02:38,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 12:02:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 12:02:38,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 12:02:38,487 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 12:02:38,487 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-10 12:02:38,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-10 12:02:38,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-11-10 12:02:38,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-10 12:02:38,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-10 12:02:38,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-10 12:02:38,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-11-10 12:02:38,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-11-10 12:02:38,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 12:02:38,488 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-10 12:02:38,488 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 12:02:38,488 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-10 12:02:38,638 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-11-10 12:02:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 755 places, 848 transitions, 1876 flow