/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 11:56:43,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 11:56:43,520 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 [2023-08-25 11:56:43,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 11:56:43,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 11:56:43,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 11:56:43,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 11:56:43,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 11:56:43,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 11:56:43,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 11:56:43,538 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 11:56:43,539 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 11:56:43,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 11:56:43,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 11:56:43,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 11:56:43,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 11:56:43,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 11:56:43,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 11:56:43,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 11:56:43,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 11:56:43,540 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 11:56:43,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 11:56:43,541 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 11:56:43,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 11:56:43,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 11:56:43,541 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 11:56:43,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 11:56:43,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 11:56:43,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 11:56:43,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 11:56:43,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 11:56:43,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 11:56:43,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 11:56:43,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 11:56:43,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 11:56:43,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 11:56:43,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 11:56:43,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 11:56:43,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 11:56:43,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 11:56:43,782 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 11:56:43,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i [2023-08-25 11:56:44,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 11:56:44,943 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 11:56:44,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i [2023-08-25 11:56:44,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756f90708/d9e6c783f7e240ee8f11afd87790e0b9/FLAGe39964927 [2023-08-25 11:56:45,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756f90708/d9e6c783f7e240ee8f11afd87790e0b9 [2023-08-25 11:56:45,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 11:56:45,292 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 11:56:45,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 11:56:45,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 11:56:45,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 11:56:45,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdc0f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45, skipping insertion in model container [2023-08-25 11:56:45,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,342 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 11:56:45,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 11:56:45,654 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 11:56:45,673 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-25 11:56:45,674 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-25 11:56:45,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 11:56:45,721 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 11:56:45,721 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 11:56:45,726 INFO L206 MainTranslator]: Completed translation [2023-08-25 11:56:45,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45 WrapperNode [2023-08-25 11:56:45,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 11:56:45,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 11:56:45,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 11:56:45,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 11:56:45,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,770 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 468 [2023-08-25 11:56:45,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 11:56:45,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 11:56:45,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 11:56:45,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 11:56:45,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 11:56:45,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 11:56:45,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 11:56:45,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 11:56:45,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (1/1) ... [2023-08-25 11:56:45,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 11:56:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 11:56:45,857 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) [2023-08-25 11:56:45,858 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 [2023-08-25 11:56:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 11:56:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 11:56:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 11:56:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 11:56:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 11:56:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-25 11:56:45,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-25 11:56:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-25 11:56:45,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-25 11:56:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 11:56:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 11:56:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 11:56:45,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 11:56:45,885 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 11:56:46,040 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 11:56:46,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 11:56:46,824 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 11:59:48,779 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 11:59:48,783 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 11:59:48,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:59:48 BoogieIcfgContainer [2023-08-25 11:59:48,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 11:59:48,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 11:59:48,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 11:59:48,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 11:59:48,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:56:45" (1/3) ... [2023-08-25 11:59:48,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a1d031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:59:48, skipping insertion in model container [2023-08-25 11:59:48,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:56:45" (2/3) ... [2023-08-25 11:59:48,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a1d031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:59:48, skipping insertion in model container [2023-08-25 11:59:48,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:59:48" (3/3) ... [2023-08-25 11:59:48,809 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.oepc_pso.oepc_rmo.oepc.i [2023-08-25 11:59:48,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 11:59:48,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 214 error locations. [2023-08-25 11:59:48,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 12:00:11,773 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 12:00:11,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 311 transitions, 632 flow [2023-08-25 12:00:29,492 INFO L124 PetriNetUnfolderBase]: 3/309 cut-off events. [2023-08-25 12:00:29,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 12:00:29,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 309 events. 3/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 1718 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 273. Up to 2 conditions per place. [2023-08-25 12:00:29,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 311 transitions, 632 flow [2023-08-25 12:00:29,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 309 transitions, 624 flow [2023-08-25 12:00:29,516 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 12:00:29,525 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 309 transitions, 624 flow [2023-08-25 12:00:29,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 309 transitions, 624 flow [2023-08-25 12:00:29,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 309 transitions, 624 flow [2023-08-25 12:00:45,518 INFO L124 PetriNetUnfolderBase]: 3/309 cut-off events. [2023-08-25 12:00:45,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 12:00:45,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 309 events. 3/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 1724 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 273. Up to 2 conditions per place. [2023-08-25 12:00:45,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 43174 [2023-08-25 12:00:57,112 INFO L134 LiptonReduction]: Checked pairs total: 323133 [2023-08-25 12:00:57,113 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-25 12:00:57,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 12:00:57,125 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;@139d2100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 12:00:57,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 393 error locations. [2023-08-25 12:00:57,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 12:00:57,128 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-25 12:00:57,128 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 12:00:57,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 12:00:57,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 12:00:57,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err14ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 389 more)] === [2023-08-25 12:00:57,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 12:00:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash 7821607, now seen corresponding path program 1 times [2023-08-25 12:00:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 12:00:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152975115] [2023-08-25 12:00:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 12:00:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 12:00:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 12:00:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 12:00:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 12:00:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152975115] [2023-08-25 12:00:58,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152975115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 12:00:58,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 12:00:58,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 12:00:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479083079] [2023-08-25 12:00:58,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 12:00:58,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 12:00:58,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 12:00:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 12:00:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 12:00:58,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 475 [2023-08-25 12:00:58,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 231 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:00:58,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 12:00:58,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 475 [2023-08-25 12:00:58,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 12:04:31,321 INFO L124 PetriNetUnfolderBase]: 275/468 cut-off events. [2023-08-25 12:04:31,322 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 12:04:31,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1688 event pairs, 275 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 944. Up to 469 conditions per place. [2023-08-25 12:04:31,324 INFO L140 encePairwiseOnDemand]: 262/475 looper letters, 18 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-25 12:04:31,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 18 transitions, 78 flow [2023-08-25 12:04:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 12:04:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 12:04:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 393 transitions. [2023-08-25 12:04:31,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41368421052631577 [2023-08-25 12:04:31,339 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 393 transitions. [2023-08-25 12:04:31,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 393 transitions. [2023-08-25 12:04:31,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 12:04:31,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 393 transitions. [2023-08-25 12:04:31,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 196.5) internal successors, (393), 2 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:04:31,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:04:31,351 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:04:31,352 INFO L175 Difference]: Start difference. First operand has 237 places, 231 transitions, 468 flow. Second operand 2 states and 393 transitions. [2023-08-25 12:04:31,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 18 transitions, 78 flow [2023-08-25 12:04:31,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 12:04:31,355 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 40 flow [2023-08-25 12:04:31,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-08-25 12:04:31,360 INFO L281 CegarLoopForPetriNet]: 237 programPoint places, -213 predicate places. [2023-08-25 12:04:31,360 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 40 flow [2023-08-25 12:04:31,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:04:31,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 12:04:31,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 12:04:31,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 12:04:31,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err8ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 389 more)] === [2023-08-25 12:04:31,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 12:04:31,362 INFO L85 PathProgramCache]: Analyzing trace with hash 7821601, now seen corresponding path program 1 times [2023-08-25 12:04:31,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 12:04:31,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285023717] [2023-08-25 12:04:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 12:04:31,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 12:04:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 12:04:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 12:04:32,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 12:04:32,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285023717] [2023-08-25 12:04:32,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285023717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 12:04:32,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 12:04:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 12:04:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897373968] [2023-08-25 12:04:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 12:04:32,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 12:04:32,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 12:04:32,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 12:04:32,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 12:04:32,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 475 [2023-08-25 12:04:32,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:04:32,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 12:04:32,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 475 [2023-08-25 12:04:32,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 12:07:28,962 INFO L124 PetriNetUnfolderBase]: 224/385 cut-off events. [2023-08-25 12:07:28,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 12:07:28,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 385 events. 224/385 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1569 event pairs, 20 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 782. Up to 333 conditions per place. [2023-08-25 12:07:28,964 INFO L140 encePairwiseOnDemand]: 472/475 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-08-25 12:07:28,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 118 flow [2023-08-25 12:07:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 12:07:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 12:07:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-25 12:07:28,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1887719298245614 [2023-08-25 12:07:28,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-25 12:07:28,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-25 12:07:28,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 12:07:28,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-25 12:07:28,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:07:28,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:07:28,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:07:28,969 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 40 flow. Second operand 3 states and 269 transitions. [2023-08-25 12:07:28,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 118 flow [2023-08-25 12:07:28,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 12:07:28,970 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 40 flow [2023-08-25 12:07:28,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-25 12:07:28,971 INFO L281 CegarLoopForPetriNet]: 237 programPoint places, -212 predicate places. [2023-08-25 12:07:28,971 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 40 flow [2023-08-25 12:07:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:07:28,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 12:07:28,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 12:07:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 12:07:28,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 389 more)] === [2023-08-25 12:07:28,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 12:07:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash -432728842, now seen corresponding path program 1 times [2023-08-25 12:07:28,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 12:07:28,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111801237] [2023-08-25 12:07:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 12:07:28,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 12:07:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 12:07:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 12:07:29,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 12:07:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111801237] [2023-08-25 12:07:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111801237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 12:07:29,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 12:07:29,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 12:07:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499327677] [2023-08-25 12:07:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 12:07:29,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 12:07:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 12:07:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 12:07:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 12:07:29,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 475 [2023-08-25 12:07:29,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:07:29,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 12:07:29,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 475 [2023-08-25 12:07:29,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 12:09:50,322 INFO L124 PetriNetUnfolderBase]: 157/278 cut-off events. [2023-08-25 12:09:50,323 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-25 12:09:50,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 278 events. 157/278 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 875 event pairs, 53 based on Foata normal form. 10/288 useless extension candidates. Maximal degree in co-relation 593. Up to 200 conditions per place. [2023-08-25 12:09:50,324 INFO L140 encePairwiseOnDemand]: 472/475 looper letters, 20 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-25 12:09:50,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 98 flow [2023-08-25 12:09:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 12:09:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 12:09:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-25 12:09:50,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18456140350877193 [2023-08-25 12:09:50,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-25 12:09:50,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-25 12:09:50,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 12:09:50,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-25 12:09:50,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:09:50,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:09:50,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:09:50,329 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 40 flow. Second operand 3 states and 263 transitions. [2023-08-25 12:09:50,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 98 flow [2023-08-25 12:09:50,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 12:09:50,330 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 44 flow [2023-08-25 12:09:50,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-25 12:09:50,330 INFO L281 CegarLoopForPetriNet]: 237 programPoint places, -212 predicate places. [2023-08-25 12:09:50,330 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 44 flow [2023-08-25 12:09:50,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:09:50,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 12:09:50,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 12:09:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 12:09:50,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 389 more)] === [2023-08-25 12:09:50,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 12:09:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 755389916, now seen corresponding path program 1 times [2023-08-25 12:09:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 12:09:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935328066] [2023-08-25 12:09:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 12:09:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 12:09:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 12:09:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 12:09:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 12:09:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935328066] [2023-08-25 12:09:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935328066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 12:09:51,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 12:09:51,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 12:09:51,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585142148] [2023-08-25 12:09:51,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 12:09:51,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 12:09:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 12:09:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 12:09:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 12:09:51,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 475 [2023-08-25 12:09:51,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 12:09:51,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 12:09:51,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 475 [2023-08-25 12:09:51,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-25 12:10:35,814 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 12:10:37,015 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-25 12:10:37,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown