/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:32:59,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:32:59,647 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-VariableLbe.epf [2023-08-24 06:32:59,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:32:59,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:32:59,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:32:59,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:32:59,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:32:59,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:32:59,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:32:59,689 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:32:59,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:32:59,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:32:59,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:32:59,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:32:59,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:32:59,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:32:59,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:32:59,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:32:59,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:32:59,691 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:32:59,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:32:59,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:32:59,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:32:59,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:32:59,693 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:32:59,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:32:59,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:32:59,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:32:59,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:32:59,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:32:59,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:32:59,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:32:59,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:32:59,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:32:59,696 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:32:59,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:33:00,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:33:00,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:33:00,007 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:33:00,007 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:33:00,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-24 06:33:01,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:33:01,423 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:33:01,424 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-24 06:33:01,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c38c27d67/c50539ccf2f240b28f02bc3efe545cfd/FLAGa012d79e9 [2023-08-24 06:33:01,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c38c27d67/c50539ccf2f240b28f02bc3efe545cfd [2023-08-24 06:33:01,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:33:01,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:33:01,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:33:01,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:33:01,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:33:01,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:01" (1/1) ... [2023-08-24 06:33:01,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f4eaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:01, skipping insertion in model container [2023-08-24 06:33:01,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:01" (1/1) ... [2023-08-24 06:33:01,527 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:33:01,951 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_27-funptr_racing.i[41323,41336] [2023-08-24 06:33:01,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:33:01,988 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:33:02,015 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:33:02,016 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:33:02,022 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-24 06:33:02,038 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_27-funptr_racing.i[41323,41336] [2023-08-24 06:33:02,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:33:02,104 WARN L669 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 06:33:02,111 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:33:02,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02 WrapperNode [2023-08-24 06:33:02,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:33:02,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:33:02,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:33:02,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:33:02,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,180 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 150 [2023-08-24 06:33:02,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:33:02,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:33:02,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:33:02,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:33:02,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:33:02,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:33:02,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:33:02,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:33:02,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (1/1) ... [2023-08-24 06:33:02,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:33:02,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:33:02,269 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) [2023-08-24 06:33:02,293 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 [2023-08-24 06:33:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:33:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:33:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:33:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:33:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:33:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:33:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:33:02,321 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:33:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:33:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:33:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:33:02,324 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:33:02,487 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:33:02,489 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:33:02,772 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:33:02,779 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:33:02,779 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-24 06:33:02,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:02 BoogieIcfgContainer [2023-08-24 06:33:02,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:33:02,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:33:02,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:33:02,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:33:02,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:33:01" (1/3) ... [2023-08-24 06:33:02,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb13a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:02, skipping insertion in model container [2023-08-24 06:33:02,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:02" (2/3) ... [2023-08-24 06:33:02,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb13a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:02, skipping insertion in model container [2023-08-24 06:33:02,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:02" (3/3) ... [2023-08-24 06:33:02,817 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-08-24 06:33:02,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:33:02,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 06:33:02,845 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:33:02,905 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:33:02,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 147 transitions, 302 flow [2023-08-24 06:33:03,003 INFO L124 PetriNetUnfolderBase]: 24/186 cut-off events. [2023-08-24 06:33:03,004 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:33:03,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 186 events. 24/186 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 508 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 106. Up to 4 conditions per place. [2023-08-24 06:33:03,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 147 transitions, 302 flow [2023-08-24 06:33:03,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 142 transitions, 289 flow [2023-08-24 06:33:03,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:03,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 142 transitions, 289 flow [2023-08-24 06:33:03,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 142 transitions, 289 flow [2023-08-24 06:33:03,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 142 transitions, 289 flow [2023-08-24 06:33:03,089 INFO L124 PetriNetUnfolderBase]: 23/181 cut-off events. [2023-08-24 06:33:03,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:33:03,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 181 events. 23/181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 491 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 106. Up to 4 conditions per place. [2023-08-24 06:33:03,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 5580 [2023-08-24 06:33:06,456 INFO L134 LiptonReduction]: Checked pairs total: 10714 [2023-08-24 06:33:06,456 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-24 06:33:06,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:06,473 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:06,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:06,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:06,476 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-24 06:33:06,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:33:06,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:06,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:33:06,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:06,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash -139400660, now seen corresponding path program 1 times [2023-08-24 06:33:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:06,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067481812] [2023-08-24 06:33:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:06,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:06,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:06,675 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:06,676 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:06,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:33:06,679 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:06,683 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:06,684 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:06,684 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:33:06,710 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:33:06,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 211 transitions, 440 flow [2023-08-24 06:33:06,767 INFO L124 PetriNetUnfolderBase]: 45/314 cut-off events. [2023-08-24 06:33:06,767 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:33:06,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 314 events. 45/314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1075 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-08-24 06:33:06,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 211 transitions, 440 flow [2023-08-24 06:33:06,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 211 transitions, 440 flow [2023-08-24 06:33:06,777 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:06,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 211 transitions, 440 flow [2023-08-24 06:33:06,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 211 transitions, 440 flow [2023-08-24 06:33:06,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 211 transitions, 440 flow [2023-08-24 06:33:06,826 INFO L124 PetriNetUnfolderBase]: 45/314 cut-off events. [2023-08-24 06:33:06,827 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:33:06,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 314 events. 45/314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1075 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-08-24 06:33:06,843 INFO L119 LiptonReduction]: Number of co-enabled transitions 20212 [2023-08-24 06:33:10,185 INFO L134 LiptonReduction]: Checked pairs total: 54561 [2023-08-24 06:33:10,185 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-24 06:33:10,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:10,188 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:10,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:10,194 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:10,194 INFO L124 PetriNetUnfolderBase]: 11/66 cut-off events. [2023-08-24 06:33:10,194 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 06:33:10,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:10,194 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:33:10,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:10,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1044896267, now seen corresponding path program 1 times [2023-08-24 06:33:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:10,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534402415] [2023-08-24 06:33:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:10,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:10,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:10,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:10,273 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:10,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:10,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:33:10,274 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:10,275 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:10,275 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:10,275 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:33:10,313 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 06:33:10,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 275 transitions, 580 flow [2023-08-24 06:33:10,383 INFO L124 PetriNetUnfolderBase]: 71/475 cut-off events. [2023-08-24 06:33:10,383 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:33:10,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 475 events. 71/475 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1849 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 322. Up to 16 conditions per place. [2023-08-24 06:33:10,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 275 transitions, 580 flow [2023-08-24 06:33:10,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 275 transitions, 580 flow [2023-08-24 06:33:10,394 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:10,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 275 transitions, 580 flow [2023-08-24 06:33:10,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 275 transitions, 580 flow [2023-08-24 06:33:10,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 275 transitions, 580 flow [2023-08-24 06:33:10,471 INFO L124 PetriNetUnfolderBase]: 71/475 cut-off events. [2023-08-24 06:33:10,471 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:33:10,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 475 events. 71/475 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1849 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 322. Up to 16 conditions per place. [2023-08-24 06:33:10,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 42408 [2023-08-24 06:33:13,923 INFO L134 LiptonReduction]: Checked pairs total: 124348 [2023-08-24 06:33:13,923 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-24 06:33:13,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:13,926 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:13,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:13,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:13,934 INFO L124 PetriNetUnfolderBase]: 26/120 cut-off events. [2023-08-24 06:33:13,934 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 06:33:13,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:13,935 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:33:13,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:13,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1144127937, now seen corresponding path program 1 times [2023-08-24 06:33:13,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:13,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922713820] [2023-08-24 06:33:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:13,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:14,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:14,007 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:14,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:14,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:33:14,008 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:14,008 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:14,009 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:14,009 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:33:14,039 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:33:14,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 339 transitions, 722 flow [2023-08-24 06:33:14,141 INFO L124 PetriNetUnfolderBase]: 109/704 cut-off events. [2023-08-24 06:33:14,142 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:33:14,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 704 events. 109/704 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2967 event pairs, 6 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 495. Up to 32 conditions per place. [2023-08-24 06:33:14,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 339 transitions, 722 flow [2023-08-24 06:33:14,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 339 transitions, 722 flow [2023-08-24 06:33:14,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:14,166 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 339 transitions, 722 flow [2023-08-24 06:33:14,166 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 339 transitions, 722 flow [2023-08-24 06:33:14,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 339 transitions, 722 flow [2023-08-24 06:33:14,268 INFO L124 PetriNetUnfolderBase]: 109/704 cut-off events. [2023-08-24 06:33:14,269 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:33:14,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 704 events. 109/704 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2967 event pairs, 6 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 495. Up to 32 conditions per place. [2023-08-24 06:33:14,315 INFO L119 LiptonReduction]: Number of co-enabled transitions 72664 [2023-08-24 06:33:17,901 INFO L134 LiptonReduction]: Checked pairs total: 217655 [2023-08-24 06:33:17,901 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-24 06:33:17,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:17,904 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:17,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:17,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:17,939 INFO L124 PetriNetUnfolderBase]: 42/175 cut-off events. [2023-08-24 06:33:17,939 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:33:17,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:17,939 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:17,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:17,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash 983381416, now seen corresponding path program 1 times [2023-08-24 06:33:17,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:17,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701819134] [2023-08-24 06:33:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:17,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:17,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:17,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:17,983 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:17,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:17,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:33:17,983 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:17,984 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:17,984 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:17,984 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:33:18,017 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 06:33:18,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 403 transitions, 866 flow [2023-08-24 06:33:18,245 INFO L124 PetriNetUnfolderBase]: 175/1073 cut-off events. [2023-08-24 06:33:18,245 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:33:18,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1073 events. 175/1073 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5247 event pairs, 23 based on Foata normal form. 0/908 useless extension candidates. Maximal degree in co-relation 749. Up to 80 conditions per place. [2023-08-24 06:33:18,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 403 transitions, 866 flow [2023-08-24 06:33:18,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 403 transitions, 866 flow [2023-08-24 06:33:18,289 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:18,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 403 transitions, 866 flow [2023-08-24 06:33:18,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 403 transitions, 866 flow [2023-08-24 06:33:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 403 transitions, 866 flow [2023-08-24 06:33:18,473 INFO L124 PetriNetUnfolderBase]: 175/1073 cut-off events. [2023-08-24 06:33:18,474 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:33:18,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1073 events. 175/1073 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5247 event pairs, 23 based on Foata normal form. 0/908 useless extension candidates. Maximal degree in co-relation 749. Up to 80 conditions per place. [2023-08-24 06:33:18,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 110980 [2023-08-24 06:33:22,525 INFO L134 LiptonReduction]: Checked pairs total: 382326 [2023-08-24 06:33:22,525 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-24 06:33:22,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:22,528 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:22,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:22,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:22,548 INFO L124 PetriNetUnfolderBase]: 56/232 cut-off events. [2023-08-24 06:33:22,548 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-24 06:33:22,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:22,548 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:22,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:22,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:22,549 INFO L85 PathProgramCache]: Analyzing trace with hash 769044173, now seen corresponding path program 1 times [2023-08-24 06:33:22,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:22,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627124216] [2023-08-24 06:33:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:22,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:22,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:22,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:22,600 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:22,605 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:22,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:33:22,606 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:22,607 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:22,608 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:22,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:33:22,647 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 06:33:22,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 467 transitions, 1012 flow [2023-08-24 06:33:23,107 INFO L124 PetriNetUnfolderBase]: 305/1730 cut-off events. [2023-08-24 06:33:23,107 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:33:23,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 1730 events. 305/1730 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9780 event pairs, 72 based on Foata normal form. 0/1482 useless extension candidates. Maximal degree in co-relation 1172. Up to 192 conditions per place. [2023-08-24 06:33:23,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 467 transitions, 1012 flow [2023-08-24 06:33:23,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 391 places, 467 transitions, 1012 flow [2023-08-24 06:33:23,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:23,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 467 transitions, 1012 flow [2023-08-24 06:33:23,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 467 transitions, 1012 flow [2023-08-24 06:33:23,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 467 transitions, 1012 flow [2023-08-24 06:33:23,546 INFO L124 PetriNetUnfolderBase]: 305/1730 cut-off events. [2023-08-24 06:33:23,547 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:33:23,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 1730 events. 305/1730 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9780 event pairs, 72 based on Foata normal form. 0/1482 useless extension candidates. Maximal degree in co-relation 1172. Up to 192 conditions per place. [2023-08-24 06:33:23,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 157356 [2023-08-24 06:33:27,987 INFO L134 LiptonReduction]: Checked pairs total: 545353 [2023-08-24 06:33:27,988 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-24 06:33:27,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:27,990 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:27,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:28,014 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:28,015 INFO L124 PetriNetUnfolderBase]: 79/312 cut-off events. [2023-08-24 06:33:28,015 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-24 06:33:28,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:28,015 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:28,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:28,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -409550831, now seen corresponding path program 1 times [2023-08-24 06:33:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857069800] [2023-08-24 06:33:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:28,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:28,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:28,059 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:28,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:28,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:33:28,059 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:28,060 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:28,060 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:28,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:33:28,093 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-24 06:33:28,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 531 transitions, 1160 flow [2023-08-24 06:33:28,825 INFO L124 PetriNetUnfolderBase]: 579/2979 cut-off events. [2023-08-24 06:33:28,825 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:33:28,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3477 conditions, 2979 events. 579/2979 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20007 event pairs, 201 based on Foata normal form. 0/2584 useless extension candidates. Maximal degree in co-relation 1948. Up to 448 conditions per place. [2023-08-24 06:33:28,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 531 transitions, 1160 flow [2023-08-24 06:33:28,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 443 places, 531 transitions, 1160 flow [2023-08-24 06:33:28,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:28,947 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 443 places, 531 transitions, 1160 flow [2023-08-24 06:33:28,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 443 places, 531 transitions, 1160 flow [2023-08-24 06:33:28,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 531 transitions, 1160 flow [2023-08-24 06:33:29,556 INFO L124 PetriNetUnfolderBase]: 579/2979 cut-off events. [2023-08-24 06:33:29,556 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:33:29,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3477 conditions, 2979 events. 579/2979 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20007 event pairs, 201 based on Foata normal form. 0/2584 useless extension candidates. Maximal degree in co-relation 1948. Up to 448 conditions per place. [2023-08-24 06:33:29,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 211792 [2023-08-24 06:33:34,414 INFO L134 LiptonReduction]: Checked pairs total: 677713 [2023-08-24 06:33:34,415 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-08-24 06:33:34,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:34,417 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:34,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:34,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:34,457 INFO L124 PetriNetUnfolderBase]: 100/388 cut-off events. [2023-08-24 06:33:34,457 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-08-24 06:33:34,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:34,457 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:34,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:34,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash -620907546, now seen corresponding path program 1 times [2023-08-24 06:33:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846304214] [2023-08-24 06:33:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:34,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:34,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:34,550 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:34,550 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:34,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:33:34,551 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:34,551 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:34,551 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:34,551 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 06:33:34,596 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:33:34,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 495 places, 595 transitions, 1310 flow [2023-08-24 06:33:36,031 INFO L124 PetriNetUnfolderBase]: 1173/5444 cut-off events. [2023-08-24 06:33:36,031 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:33:36,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 5444 events. 1173/5444 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 42779 event pairs, 522 based on Foata normal form. 0/4774 useless extension candidates. Maximal degree in co-relation 3461. Up to 1024 conditions per place. [2023-08-24 06:33:36,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 495 places, 595 transitions, 1310 flow [2023-08-24 06:33:36,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 495 places, 595 transitions, 1310 flow [2023-08-24 06:33:36,218 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:36,219 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 495 places, 595 transitions, 1310 flow [2023-08-24 06:33:36,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 495 places, 595 transitions, 1310 flow [2023-08-24 06:33:36,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 495 places, 595 transitions, 1310 flow [2023-08-24 06:33:37,662 INFO L124 PetriNetUnfolderBase]: 1173/5444 cut-off events. [2023-08-24 06:33:37,662 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:33:37,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 5444 events. 1173/5444 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 42779 event pairs, 522 based on Foata normal form. 0/4774 useless extension candidates. Maximal degree in co-relation 3461. Up to 1024 conditions per place. [2023-08-24 06:33:38,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 274288 [2023-08-24 06:33:42,836 INFO L134 LiptonReduction]: Checked pairs total: 863305 [2023-08-24 06:33:42,836 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-08-24 06:33:42,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:42,838 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:42,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:42,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:42,884 INFO L124 PetriNetUnfolderBase]: 121/470 cut-off events. [2023-08-24 06:33:42,884 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-08-24 06:33:42,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:42,884 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:42,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:42,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1439545576, now seen corresponding path program 1 times [2023-08-24 06:33:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:42,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417539767] [2023-08-24 06:33:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:42,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:42,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:42,927 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:42,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:42,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:33:42,927 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:42,928 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:42,928 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:42,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 06:33:42,970 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 06:33:42,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 547 places, 659 transitions, 1462 flow [2023-08-24 06:33:45,986 INFO L124 PetriNetUnfolderBase]: 2471/10405 cut-off events. [2023-08-24 06:33:45,986 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:33:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 10405 events. 2471/10405 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 96614 event pairs, 1291 based on Foata normal form. 0/9204 useless extension candidates. Maximal degree in co-relation 6511. Up to 2304 conditions per place. [2023-08-24 06:33:46,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 547 places, 659 transitions, 1462 flow [2023-08-24 06:33:46,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 547 places, 659 transitions, 1462 flow [2023-08-24 06:33:46,401 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:46,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 547 places, 659 transitions, 1462 flow [2023-08-24 06:33:46,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 547 places, 659 transitions, 1462 flow [2023-08-24 06:33:46,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 547 places, 659 transitions, 1462 flow [2023-08-24 06:33:49,335 INFO L124 PetriNetUnfolderBase]: 2471/10405 cut-off events. [2023-08-24 06:33:49,335 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:33:49,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 10405 events. 2471/10405 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 96614 event pairs, 1291 based on Foata normal form. 0/9204 useless extension candidates. Maximal degree in co-relation 6511. Up to 2304 conditions per place. [2023-08-24 06:33:50,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 344844 [2023-08-24 06:33:55,975 INFO L134 LiptonReduction]: Checked pairs total: 1104239 [2023-08-24 06:33:55,975 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-08-24 06:33:55,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:55,978 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:55,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:56,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:56,055 INFO L124 PetriNetUnfolderBase]: 151/577 cut-off events. [2023-08-24 06:33:56,055 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-08-24 06:33:56,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:56,055 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:56,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:56,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1328407024, now seen corresponding path program 1 times [2023-08-24 06:33:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:56,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274944210] [2023-08-24 06:33:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:56,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:56,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:56,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:56,123 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:56,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 06:33:56,123 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:56,126 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:56,128 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:56,129 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 06:33:56,183 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 06:33:56,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 599 places, 723 transitions, 1616 flow [2023-08-24 06:34:02,803 INFO L124 PetriNetUnfolderBase]: 5305/20486 cut-off events. [2023-08-24 06:34:02,803 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:34:03,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25692 conditions, 20486 events. 5305/20486 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 213595 event pairs, 3084 based on Foata normal form. 0/18242 useless extension candidates. Maximal degree in co-relation 12762. Up to 5120 conditions per place. [2023-08-24 06:34:03,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 599 places, 723 transitions, 1616 flow [2023-08-24 06:34:03,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 599 places, 723 transitions, 1616 flow [2023-08-24 06:34:03,784 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:03,784 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 599 places, 723 transitions, 1616 flow [2023-08-24 06:34:03,784 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 599 places, 723 transitions, 1616 flow [2023-08-24 06:34:03,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 599 places, 723 transitions, 1616 flow [2023-08-24 06:34:10,398 INFO L124 PetriNetUnfolderBase]: 5305/20486 cut-off events. [2023-08-24 06:34:10,398 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:34:11,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25692 conditions, 20486 events. 5305/20486 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 213595 event pairs, 3084 based on Foata normal form. 0/18242 useless extension candidates. Maximal degree in co-relation 12762. Up to 5120 conditions per place. [2023-08-24 06:34:12,677 INFO L119 LiptonReduction]: Number of co-enabled transitions 423460 [2023-08-24 06:34:18,218 INFO L134 LiptonReduction]: Checked pairs total: 1353066 [2023-08-24 06:34:18,218 INFO L136 LiptonReduction]: Total number of compositions: 433 [2023-08-24 06:34:18,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:18,220 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:18,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:18,309 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:18,309 INFO L124 PetriNetUnfolderBase]: 186/705 cut-off events. [2023-08-24 06:34:18,309 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2023-08-24 06:34:18,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:18,310 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:18,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:18,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:18,310 INFO L85 PathProgramCache]: Analyzing trace with hash 437230582, now seen corresponding path program 1 times [2023-08-24 06:34:18,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:18,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202968495] [2023-08-24 06:34:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:18,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:18,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:18,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:18,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:18,353 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:18,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:34:18,353 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:18,354 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:18,354 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:18,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 06:34:18,402 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-24 06:34:18,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 651 places, 787 transitions, 1772 flow [2023-08-24 06:34:33,472 INFO L124 PetriNetUnfolderBase]: 11467/41063 cut-off events. [2023-08-24 06:34:33,472 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:34:35,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52427 conditions, 41063 events. 11467/41063 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 478282 event pairs, 7181 based on Foata normal form. 0/36752 useless extension candidates. Maximal degree in co-relation 25670. Up to 11264 conditions per place. [2023-08-24 06:34:35,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 651 places, 787 transitions, 1772 flow [2023-08-24 06:34:36,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 651 places, 787 transitions, 1772 flow [2023-08-24 06:34:36,378 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:36,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 651 places, 787 transitions, 1772 flow [2023-08-24 06:34:36,378 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 651 places, 787 transitions, 1772 flow [2023-08-24 06:34:36,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 651 places, 787 transitions, 1772 flow [2023-08-24 06:34:51,073 INFO L124 PetriNetUnfolderBase]: 11467/41063 cut-off events. [2023-08-24 06:34:51,074 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:34:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52427 conditions, 41063 events. 11467/41063 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 478282 event pairs, 7181 based on Foata normal form. 0/36752 useless extension candidates. Maximal degree in co-relation 25670. Up to 11264 conditions per place. [2023-08-24 06:34:56,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 510136 [2023-08-24 06:35:02,893 INFO L134 LiptonReduction]: Checked pairs total: 1639357 [2023-08-24 06:35:02,893 INFO L136 LiptonReduction]: Total number of compositions: 470 [2023-08-24 06:35:02,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:35:02,895 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:35:02,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:35:02,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:35:02,994 INFO L124 PetriNetUnfolderBase]: 238/877 cut-off events. [2023-08-24 06:35:02,994 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2023-08-24 06:35:02,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:35:02,994 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:35:02,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:35:02,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:35:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash 443237398, now seen corresponding path program 1 times [2023-08-24 06:35:02,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:35:02,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795037724] [2023-08-24 06:35:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:35:02,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:35:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:35:03,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:35:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:35:03,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:35:03,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:35:03,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:35:03,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 06:35:03,042 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:35:03,044 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:35:03,044 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:35:03,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 06:35:03,096 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:35:03,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 851 transitions, 1930 flow [2023-08-24 06:35:36,671 INFO L124 PetriNetUnfolderBase]: 24797/83144 cut-off events. [2023-08-24 06:35:36,671 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:35:45,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107835 conditions, 83144 events. 24797/83144 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 1056138 event pairs, 16398 based on Foata normal form. 0/74718 useless extension candidates. Maximal degree in co-relation 52403. Up to 24576 conditions per place. [2023-08-24 06:35:45,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 851 transitions, 1930 flow [2023-08-24 06:35:47,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 703 places, 851 transitions, 1930 flow [2023-08-24 06:35:47,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:35:47,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 703 places, 851 transitions, 1930 flow [2023-08-24 06:35:47,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 703 places, 851 transitions, 1930 flow [2023-08-24 06:35:47,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 851 transitions, 1930 flow [2023-08-24 06:36:22,250 INFO L124 PetriNetUnfolderBase]: 24797/83144 cut-off events. [2023-08-24 06:36:22,251 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:36:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107835 conditions, 83144 events. 24797/83144 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 1056138 event pairs, 16398 based on Foata normal form. 0/74718 useless extension candidates. Maximal degree in co-relation 52403. Up to 24576 conditions per place. [2023-08-24 06:36:42,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 604872 [2023-08-24 06:36:48,508 INFO L134 LiptonReduction]: Checked pairs total: 1986934 [2023-08-24 06:36:48,508 INFO L136 LiptonReduction]: Total number of compositions: 509 [2023-08-24 06:36:48,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:36:48,510 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=LoopsAndPotentialCycles, 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;@4af7adc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:36:48,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:36:48,681 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:36:48,681 INFO L124 PetriNetUnfolderBase]: 316/1115 cut-off events. [2023-08-24 06:36:48,681 INFO L125 PetriNetUnfolderBase]: For 613/613 co-relation queries the response was YES. [2023-08-24 06:36:48,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:36:48,682 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:36:48,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:36:48,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:36:48,682 INFO L85 PathProgramCache]: Analyzing trace with hash 439262817, now seen corresponding path program 1 times [2023-08-24 06:36:48,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:36:48,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651229723] [2023-08-24 06:36:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:36:48,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:36:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:36:48,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:36:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:36:48,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:36:48,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:36:48,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:36:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:36:48,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:36:48,731 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:36:48,731 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:36:48,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 06:36:48,791 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-24 06:36:48,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 755 places, 915 transitions, 2090 flow [2023-08-24 06:38:18,500 INFO L124 PetriNetUnfolderBase]: 53487/169257 cut-off events. [2023-08-24 06:38:18,500 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES.