/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 PROGRAM_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/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 22:00:12,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 22:00:12,532 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 22:00:12,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 22:00:12,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 22:00:12,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 22:00:12,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 22:00:12,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 22:00:12,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 22:00:12,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 22:00:12,554 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 22:00:12,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 22:00:12,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 22:00:12,554 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 22:00:12,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 22:00:12,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 22:00:12,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 22:00:12,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 22:00:12,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 22:00:12,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 22:00:12,556 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 22:00:12,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 22:00:12,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 22:00:12,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 22:00:12,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 22:00:12,559 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 22:00:12,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 22:00:12,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:00:12,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 22:00:12,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 22:00:12,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 22:00:12,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 22:00:12,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 22:00:12,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 22:00:12,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 22:00:12,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 22:00:12,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 22:00:12,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 22:00:12,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 22:00:12,803 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 22:00:12,804 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 22:00:12,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-25 22:00:13,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 22:00:13,992 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 22:00:13,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-25 22:00:14,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98f640fa/76183137e29b4e37b41ca42087e82918/FLAG234c8e18f [2023-08-25 22:00:14,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98f640fa/76183137e29b4e37b41ca42087e82918 [2023-08-25 22:00:14,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 22:00:14,016 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 22:00:14,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 22:00:14,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 22:00:14,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 22:00:14,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb20183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14, skipping insertion in model container [2023-08-25 22:00:14,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,046 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 22:00:14,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:00:14,264 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 22:00:14,289 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 22:00:14,290 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 22:00:14,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:00:14,330 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:00:14,330 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:00:14,335 INFO L206 MainTranslator]: Completed translation [2023-08-25 22:00:14,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14 WrapperNode [2023-08-25 22:00:14,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 22:00:14,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 22:00:14,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 22:00:14,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 22:00:14,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,378 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-08-25 22:00:14,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 22:00:14,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 22:00:14,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 22:00:14,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 22:00:14,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 22:00:14,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 22:00:14,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 22:00:14,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 22:00:14,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (1/1) ... [2023-08-25 22:00:14,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:00:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:14,440 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 22:00:14,476 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 22:00:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 22:00:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 22:00:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 22:00:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 22:00:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 22:00:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 22:00:14,485 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 22:00:14,613 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 22:00:14,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 22:00:14,761 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 22:00:14,789 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 22:00:14,789 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 22:00:14,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:00:14 BoogieIcfgContainer [2023-08-25 22:00:14,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 22:00:14,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 22:00:14,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 22:00:14,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 22:00:14,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 10:00:14" (1/3) ... [2023-08-25 22:00:14,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182e2d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:00:14, skipping insertion in model container [2023-08-25 22:00:14,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:00:14" (2/3) ... [2023-08-25 22:00:14,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182e2d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:00:14, skipping insertion in model container [2023-08-25 22:00:14,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:00:14" (3/3) ... [2023-08-25 22:00:14,801 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-08-25 22:00:14,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 22:00:14,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 22:00:14,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 22:00:14,866 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:00:14,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 22:00:14,923 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 22:00:14,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:00:14,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 22:00:14,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 22:00:14,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2023-08-25 22:00:14,935 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:00:14,947 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 22:00:14,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 22:00:14,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2023-08-25 22:00:14,975 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 22:00:14,975 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:00:14,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 22:00:14,978 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-08-25 22:00:16,788 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2023-08-25 22:00:16,789 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-25 22:00:16,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:00:16,809 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;@5b0b46e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:00:16,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-25 22:00:16,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:00:16,813 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-25 22:00:16,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:00:16,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:16,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:00:16,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:16,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:16,817 INFO L85 PathProgramCache]: Analyzing trace with hash 10943499, now seen corresponding path program 1 times [2023-08-25 22:00:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:16,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914459937] [2023-08-25 22:00:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:16,936 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 22:00:16,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914459937] [2023-08-25 22:00:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914459937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:16,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:00:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 22:00:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961781330] [2023-08-25 22:00:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:16,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:00:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:00:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:00:16,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-08-25 22:00:16,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 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 22:00:16,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:16,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-08-25 22:00:16,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:16,986 INFO L124 PetriNetUnfolderBase]: 70/113 cut-off events. [2023-08-25 22:00:16,986 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:00:16,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 113 events. 70/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 256 event pairs, 44 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 228. Up to 114 conditions per place. [2023-08-25 22:00:16,987 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 12 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2023-08-25 22:00:16,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-25 22:00:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:00:16,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:00:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2023-08-25 22:00:16,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-25 22:00:16,996 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2023-08-25 22:00:16,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2023-08-25 22:00:16,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:16,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2023-08-25 22:00:16,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 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 22:00:17,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 22:00:17,002 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 22:00:17,003 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 44 flow. Second operand 2 states and 141 transitions. [2023-08-25 22:00:17,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-25 22:00:17,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:00:17,005 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 28 flow [2023-08-25 22:00:17,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-25 22:00:17,010 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-08-25 22:00:17,010 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2023-08-25 22:00:17,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 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 22:00:17,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:17,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 22:00:17,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 22:00:17,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:17,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1927611490, now seen corresponding path program 1 times [2023-08-25 22:00:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:17,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985027349] [2023-08-25 22:00:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:17,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:17,219 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 22:00:17,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:17,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985027349] [2023-08-25 22:00:17,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985027349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:17,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:00:17,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:00:17,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507528101] [2023-08-25 22:00:17,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:17,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:00:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:17,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:00:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:00:17,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:17,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 22:00:17,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:17,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:17,285 INFO L124 PetriNetUnfolderBase]: 84/143 cut-off events. [2023-08-25 22:00:17,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:00:17,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 143 events. 84/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 15 based on Foata normal form. 15/119 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-25 22:00:17,286 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 23 selfloop transitions, 7 changer transitions 2/32 dead transitions. [2023-08-25 22:00:17,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 32 transitions, 134 flow [2023-08-25 22:00:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 22:00:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 22:00:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2023-08-25 22:00:17,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2023-08-25 22:00:17,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2023-08-25 22:00:17,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2023-08-25 22:00:17,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:17,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2023-08-25 22:00:17,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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 22:00:17,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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 22:00:17,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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 22:00:17,297 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 5 states and 314 transitions. [2023-08-25 22:00:17,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 32 transitions, 134 flow [2023-08-25 22:00:17,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:00:17,298 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-08-25 22:00:17,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-25 22:00:17,299 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-25 22:00:17,299 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-08-25 22:00:17,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 22:00:17,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:17,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 22:00:17,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:17,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1337591207, now seen corresponding path program 1 times [2023-08-25 22:00:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:17,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723950561] [2023-08-25 22:00:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:17,395 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 22:00:17,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:17,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723950561] [2023-08-25 22:00:17,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723950561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:17,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:00:17,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:00:17,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757547256] [2023-08-25 22:00:17,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:17,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:00:17,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:17,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:00:17,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:00:17,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:17,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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 22:00:17,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:17,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:17,445 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-08-25 22:00:17,445 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-25 22:00:17,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 438 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 448. Up to 61 conditions per place. [2023-08-25 22:00:17,447 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-25 22:00:17,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 173 flow [2023-08-25 22:00:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 22:00:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 22:00:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-25 22:00:17,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2023-08-25 22:00:17,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-25 22:00:17,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-25 22:00:17,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:17,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-25 22:00:17,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 22:00:17,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 22:00:17,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 22:00:17,453 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 249 transitions. [2023-08-25 22:00:17,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 173 flow [2023-08-25 22:00:17,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:00:17,455 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 119 flow [2023-08-25 22:00:17,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-25 22:00:17,456 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-25 22:00:17,456 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 119 flow [2023-08-25 22:00:17,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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 22:00:17,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:17,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:17,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 22:00:17,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:17,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192770, now seen corresponding path program 1 times [2023-08-25 22:00:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153802166] [2023-08-25 22:00:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:17,557 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 22:00:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153802166] [2023-08-25 22:00:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153802166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:00:17,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:00:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729864408] [2023-08-25 22:00:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:17,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:00:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:17,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:00:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:00:17,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:17,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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 22:00:17,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:17,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:17,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:17,647 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-08-25 22:00:17,647 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-25 22:00:17,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 713 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 748. Up to 101 conditions per place. [2023-08-25 22:00:17,651 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-25 22:00:17,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 301 flow [2023-08-25 22:00:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 22:00:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 22:00:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-25 22:00:17,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995726495726496 [2023-08-25 22:00:17,653 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-25 22:00:17,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-25 22:00:17,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:17,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-25 22:00:17,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.333333333333336) internal successors, (374), 6 states have internal predecessors, (374), 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 22:00:17,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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 22:00:17,658 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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 22:00:17,658 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 119 flow. Second operand 6 states and 374 transitions. [2023-08-25 22:00:17,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 301 flow [2023-08-25 22:00:17,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-25 22:00:17,662 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 203 flow [2023-08-25 22:00:17,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-25 22:00:17,663 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-25 22:00:17,663 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 203 flow [2023-08-25 22:00:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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 22:00:17,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:17,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:17,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 22:00:17,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:17,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1303209510, now seen corresponding path program 2 times [2023-08-25 22:00:17,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:17,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858669428] [2023-08-25 22:00:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:17,864 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 22:00:17,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858669428] [2023-08-25 22:00:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858669428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:17,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:00:17,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:00:17,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977945857] [2023-08-25 22:00:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:17,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:00:17,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:00:17,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:00:17,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:17,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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 22:00:17,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:17,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:17,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:17,939 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-25 22:00:17,943 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-08-25 22:00:17,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 611 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 761. Up to 84 conditions per place. [2023-08-25 22:00:17,945 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-08-25 22:00:17,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 349 flow [2023-08-25 22:00:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 22:00:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 22:00:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-08-25 22:00:17,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-25 22:00:17,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-08-25 22:00:17,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-08-25 22:00:17,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:17,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-08-25 22:00:17,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.6) internal successors, (313), 5 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 22:00:17,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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 22:00:17,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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 22:00:17,949 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 203 flow. Second operand 5 states and 313 transitions. [2023-08-25 22:00:17,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 349 flow [2023-08-25 22:00:17,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 335 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-25 22:00:17,955 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 236 flow [2023-08-25 22:00:17,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-25 22:00:17,956 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-25 22:00:17,956 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 236 flow [2023-08-25 22:00:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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 22:00:17,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:17,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:17,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 22:00:17,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:17,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:17,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1194528409, now seen corresponding path program 1 times [2023-08-25 22:00:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:17,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336687673] [2023-08-25 22:00:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:18,057 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 22:00:18,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:18,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336687673] [2023-08-25 22:00:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336687673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:18,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:00:18,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 22:00:18,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314988217] [2023-08-25 22:00:18,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:18,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 22:00:18,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:18,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 22:00:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-25 22:00:18,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:18,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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 22:00:18,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:18,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:18,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:18,145 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-25 22:00:18,145 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-25 22:00:18,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 263 events. 150/263 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 861 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1078. Up to 73 conditions per place. [2023-08-25 22:00:18,147 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-08-25 22:00:18,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 496 flow [2023-08-25 22:00:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 22:00:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 22:00:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-08-25 22:00:18,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-08-25 22:00:18,149 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-08-25 22:00:18,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-08-25 22:00:18,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:18,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-08-25 22:00:18,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 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 22:00:18,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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 22:00:18,152 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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 22:00:18,152 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 236 flow. Second operand 8 states and 494 transitions. [2023-08-25 22:00:18,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 496 flow [2023-08-25 22:00:18,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 457 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-25 22:00:18,156 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 336 flow [2023-08-25 22:00:18,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-25 22:00:18,158 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2023-08-25 22:00:18,160 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 336 flow [2023-08-25 22:00:18,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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 22:00:18,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:18,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:18,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 22:00:18,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:18,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1229400619, now seen corresponding path program 2 times [2023-08-25 22:00:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712037680] [2023-08-25 22:00:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:18,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:18,315 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 22:00:18,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:18,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712037680] [2023-08-25 22:00:18,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712037680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:18,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:00:18,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 22:00:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146433582] [2023-08-25 22:00:18,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:18,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 22:00:18,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 22:00:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 22:00:18,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:18,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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 22:00:18,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:18,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:18,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:18,403 INFO L124 PetriNetUnfolderBase]: 146/255 cut-off events. [2023-08-25 22:00:18,404 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2023-08-25 22:00:18,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 255 events. 146/255 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 860 event pairs, 18 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 1192. Up to 75 conditions per place. [2023-08-25 22:00:18,405 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 28 selfloop transitions, 22 changer transitions 10/60 dead transitions. [2023-08-25 22:00:18,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 602 flow [2023-08-25 22:00:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 22:00:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 22:00:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 493 transitions. [2023-08-25 22:00:18,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39503205128205127 [2023-08-25 22:00:18,407 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 493 transitions. [2023-08-25 22:00:18,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 493 transitions. [2023-08-25 22:00:18,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:18,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 493 transitions. [2023-08-25 22:00:18,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.625) internal successors, (493), 8 states have internal predecessors, (493), 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 22:00:18,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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 22:00:18,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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 22:00:18,409 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 336 flow. Second operand 8 states and 493 transitions. [2023-08-25 22:00:18,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 602 flow [2023-08-25 22:00:18,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 551 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-25 22:00:18,415 INFO L231 Difference]: Finished difference. Result has 56 places, 38 transitions, 395 flow [2023-08-25 22:00:18,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=395, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2023-08-25 22:00:18,416 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 32 predicate places. [2023-08-25 22:00:18,417 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 395 flow [2023-08-25 22:00:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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 22:00:18,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:18,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:18,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 22:00:18,418 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:18,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1643179524, now seen corresponding path program 3 times [2023-08-25 22:00:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:18,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514606014] [2023-08-25 22:00:18,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:18,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514606014] [2023-08-25 22:00:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514606014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981031193] [2023-08-25 22:00:18,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 22:00:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:18,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:18,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 22:00:18,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 22:00:18,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:18,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 22:00:18,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:18,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:18,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981031193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:18,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:18,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 22:00:18,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498253316] [2023-08-25 22:00:18,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:18,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 22:00:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 22:00:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-25 22:00:18,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:18,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 395 flow. Second operand has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 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 22:00:18,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:18,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:18,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:18,940 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2023-08-25 22:00:18,940 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-08-25 22:00:18,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 303 events. 170/303 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 990 event pairs, 35 based on Foata normal form. 24/327 useless extension candidates. Maximal degree in co-relation 1499. Up to 161 conditions per place. [2023-08-25 22:00:18,942 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 42 selfloop transitions, 17 changer transitions 19/78 dead transitions. [2023-08-25 22:00:18,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 817 flow [2023-08-25 22:00:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 22:00:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 22:00:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 737 transitions. [2023-08-25 22:00:18,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936965811965812 [2023-08-25 22:00:18,944 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 737 transitions. [2023-08-25 22:00:18,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 737 transitions. [2023-08-25 22:00:18,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:18,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 737 transitions. [2023-08-25 22:00:18,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 61.416666666666664) internal successors, (737), 12 states have internal predecessors, (737), 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 22:00:18,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 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 22:00:18,948 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 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 22:00:18,948 INFO L175 Difference]: Start difference. First operand has 56 places, 38 transitions, 395 flow. Second operand 12 states and 737 transitions. [2023-08-25 22:00:18,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 817 flow [2023-08-25 22:00:18,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 768 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-25 22:00:18,953 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 506 flow [2023-08-25 22:00:18,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=506, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-08-25 22:00:18,953 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-08-25 22:00:18,954 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 506 flow [2023-08-25 22:00:18,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 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 22:00:18,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:18,954 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:18,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:19,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:19,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:19,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1627092384, now seen corresponding path program 4 times [2023-08-25 22:00:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:19,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369403950] [2023-08-25 22:00:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:19,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:19,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:19,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369403950] [2023-08-25 22:00:19,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369403950] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:19,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688739570] [2023-08-25 22:00:19,234 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 22:00:19,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:19,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:19,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:19,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 22:00:19,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 22:00:19,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:19,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 22:00:19,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:19,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688739570] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:19,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:19,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-25 22:00:19,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544318391] [2023-08-25 22:00:19,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:19,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 22:00:19,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 22:00:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-25 22:00:19,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:19,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 506 flow. Second operand has 13 states, 13 states have (on average 57.92307692307692) internal successors, (753), 13 states have internal predecessors, (753), 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 22:00:19,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:19,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:19,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:19,689 INFO L124 PetriNetUnfolderBase]: 244/439 cut-off events. [2023-08-25 22:00:19,689 INFO L125 PetriNetUnfolderBase]: For 6607/6607 co-relation queries the response was YES. [2023-08-25 22:00:19,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 439 events. 244/439 cut-off events. For 6607/6607 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1688 event pairs, 28 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2507. Up to 134 conditions per place. [2023-08-25 22:00:19,691 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-08-25 22:00:19,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 117 transitions, 1395 flow [2023-08-25 22:00:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 22:00:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 22:00:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1105 transitions. [2023-08-25 22:00:19,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39351851851851855 [2023-08-25 22:00:19,694 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1105 transitions. [2023-08-25 22:00:19,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1105 transitions. [2023-08-25 22:00:19,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:19,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1105 transitions. [2023-08-25 22:00:19,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 61.388888888888886) internal successors, (1105), 18 states have internal predecessors, (1105), 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 22:00:19,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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 22:00:19,699 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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 22:00:19,699 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 506 flow. Second operand 18 states and 1105 transitions. [2023-08-25 22:00:19,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 117 transitions, 1395 flow [2023-08-25 22:00:19,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 1281 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-08-25 22:00:19,710 INFO L231 Difference]: Finished difference. Result has 91 places, 64 transitions, 911 flow [2023-08-25 22:00:19,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=911, PETRI_PLACES=91, PETRI_TRANSITIONS=64} [2023-08-25 22:00:19,711 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2023-08-25 22:00:19,711 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 64 transitions, 911 flow [2023-08-25 22:00:19,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.92307692307692) internal successors, (753), 13 states have internal predecessors, (753), 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 22:00:19,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:19,711 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:19,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 22:00:19,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-25 22:00:19,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:19,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1185544892, now seen corresponding path program 5 times [2023-08-25 22:00:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:19,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148479463] [2023-08-25 22:00:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:19,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148479463] [2023-08-25 22:00:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148479463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750877945] [2023-08-25 22:00:19,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 22:00:19,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:19,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:19,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 22:00:20,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 22:00:20,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:20,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 22:00:20,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:20,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:20,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750877945] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:20,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:20,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 22:00:20,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767587465] [2023-08-25 22:00:20,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:20,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 22:00:20,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:20,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 22:00:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-25 22:00:20,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:20,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 64 transitions, 911 flow. Second operand has 14 states, 14 states have (on average 57.714285714285715) internal successors, (808), 14 states have internal predecessors, (808), 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 22:00:20,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:20,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:20,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:20,387 INFO L124 PetriNetUnfolderBase]: 328/599 cut-off events. [2023-08-25 22:00:20,388 INFO L125 PetriNetUnfolderBase]: For 16167/16167 co-relation queries the response was YES. [2023-08-25 22:00:20,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4539 conditions, 599 events. 328/599 cut-off events. For 16167/16167 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2505 event pairs, 27 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4499. Up to 210 conditions per place. [2023-08-25 22:00:20,392 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-08-25 22:00:20,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 133 transitions, 2190 flow [2023-08-25 22:00:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 22:00:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 22:00:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1100 transitions. [2023-08-25 22:00:20,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39173789173789175 [2023-08-25 22:00:20,394 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1100 transitions. [2023-08-25 22:00:20,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1100 transitions. [2023-08-25 22:00:20,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:20,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1100 transitions. [2023-08-25 22:00:20,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 61.111111111111114) internal successors, (1100), 18 states have internal predecessors, (1100), 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 22:00:20,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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 22:00:20,399 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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 22:00:20,400 INFO L175 Difference]: Start difference. First operand has 91 places, 64 transitions, 911 flow. Second operand 18 states and 1100 transitions. [2023-08-25 22:00:20,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 133 transitions, 2190 flow [2023-08-25 22:00:20,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 133 transitions, 1900 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-08-25 22:00:20,425 INFO L231 Difference]: Finished difference. Result has 113 places, 80 transitions, 1285 flow [2023-08-25 22:00:20,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1285, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2023-08-25 22:00:20,425 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 89 predicate places. [2023-08-25 22:00:20,425 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 1285 flow [2023-08-25 22:00:20,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 57.714285714285715) internal successors, (808), 14 states have internal predecessors, (808), 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 22:00:20,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:20,426 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:20,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:20,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:20,631 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:20,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash 338622504, now seen corresponding path program 6 times [2023-08-25 22:00:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:20,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372262921] [2023-08-25 22:00:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:20,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:20,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:20,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372262921] [2023-08-25 22:00:20,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372262921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:20,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931288384] [2023-08-25 22:00:20,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 22:00:20,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:20,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:20,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:20,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 22:00:20,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 22:00:20,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:20,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 22:00:20,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:20,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:20,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931288384] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:20,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:20,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 22:00:20,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923489312] [2023-08-25 22:00:20,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:20,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 22:00:20,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 22:00:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-25 22:00:20,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:20,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 1285 flow. Second operand has 14 states, 14 states have (on average 57.785714285714285) internal successors, (809), 14 states have internal predecessors, (809), 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 22:00:20,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:20,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:20,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:21,234 INFO L124 PetriNetUnfolderBase]: 388/707 cut-off events. [2023-08-25 22:00:21,235 INFO L125 PetriNetUnfolderBase]: For 31371/31371 co-relation queries the response was YES. [2023-08-25 22:00:21,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 707 events. 388/707 cut-off events. For 31371/31371 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3062 event pairs, 20 based on Foata normal form. 28/735 useless extension candidates. Maximal degree in co-relation 6025. Up to 247 conditions per place. [2023-08-25 22:00:21,240 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 44 selfloop transitions, 82 changer transitions 34/160 dead transitions. [2023-08-25 22:00:21,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 160 transitions, 3049 flow [2023-08-25 22:00:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 22:00:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 22:00:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1223 transitions. [2023-08-25 22:00:21,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3919871794871795 [2023-08-25 22:00:21,243 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1223 transitions. [2023-08-25 22:00:21,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1223 transitions. [2023-08-25 22:00:21,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:21,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1223 transitions. [2023-08-25 22:00:21,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 61.15) internal successors, (1223), 20 states have internal predecessors, (1223), 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 22:00:21,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 156.0) internal successors, (3276), 21 states have internal predecessors, (3276), 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 22:00:21,249 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 156.0) internal successors, (3276), 21 states have internal predecessors, (3276), 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 22:00:21,249 INFO L175 Difference]: Start difference. First operand has 113 places, 80 transitions, 1285 flow. Second operand 20 states and 1223 transitions. [2023-08-25 22:00:21,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 160 transitions, 3049 flow [2023-08-25 22:00:21,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 160 transitions, 2457 flow, removed 261 selfloop flow, removed 12 redundant places. [2023-08-25 22:00:21,285 INFO L231 Difference]: Finished difference. Result has 131 places, 101 transitions, 1739 flow [2023-08-25 22:00:21,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1739, PETRI_PLACES=131, PETRI_TRANSITIONS=101} [2023-08-25 22:00:21,285 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2023-08-25 22:00:21,285 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 101 transitions, 1739 flow [2023-08-25 22:00:21,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 57.785714285714285) internal successors, (809), 14 states have internal predecessors, (809), 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 22:00:21,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:21,286 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:21,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:21,491 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:21,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -454733236, now seen corresponding path program 7 times [2023-08-25 22:00:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723963915] [2023-08-25 22:00:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:21,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:21,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723963915] [2023-08-25 22:00:21,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723963915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:21,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399916584] [2023-08-25 22:00:21,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 22:00:21,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:21,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:21,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:21,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 22:00:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:21,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 22:00:21,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:21,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:21,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399916584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:21,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:21,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-25 22:00:21,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989741293] [2023-08-25 22:00:21,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:21,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 22:00:21,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:21,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 22:00:21,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-25 22:00:21,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:21,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 101 transitions, 1739 flow. Second operand has 22 states, 22 states have (on average 57.5) internal successors, (1265), 22 states have internal predecessors, (1265), 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 22:00:21,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:21,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:21,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:22,511 INFO L124 PetriNetUnfolderBase]: 536/955 cut-off events. [2023-08-25 22:00:22,511 INFO L125 PetriNetUnfolderBase]: For 48547/48547 co-relation queries the response was YES. [2023-08-25 22:00:22,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 955 events. 536/955 cut-off events. For 48547/48547 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4130 event pairs, 15 based on Foata normal form. 36/991 useless extension candidates. Maximal degree in co-relation 8987. Up to 339 conditions per place. [2023-08-25 22:00:22,519 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-08-25 22:00:22,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 247 transitions, 5057 flow [2023-08-25 22:00:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 22:00:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 22:00:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2198 transitions. [2023-08-25 22:00:22,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39138176638176636 [2023-08-25 22:00:22,523 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2198 transitions. [2023-08-25 22:00:22,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2198 transitions. [2023-08-25 22:00:22,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:22,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2198 transitions. [2023-08-25 22:00:22,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 61.05555555555556) internal successors, (2198), 36 states have internal predecessors, (2198), 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 22:00:22,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 156.0) internal successors, (5772), 37 states have internal predecessors, (5772), 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 22:00:22,555 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 156.0) internal successors, (5772), 37 states have internal predecessors, (5772), 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 22:00:22,555 INFO L175 Difference]: Start difference. First operand has 131 places, 101 transitions, 1739 flow. Second operand 36 states and 2198 transitions. [2023-08-25 22:00:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 247 transitions, 5057 flow [2023-08-25 22:00:22,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 247 transitions, 4412 flow, removed 289 selfloop flow, removed 12 redundant places. [2023-08-25 22:00:22,609 INFO L231 Difference]: Finished difference. Result has 172 places, 138 transitions, 2790 flow [2023-08-25 22:00:22,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2790, PETRI_PLACES=172, PETRI_TRANSITIONS=138} [2023-08-25 22:00:22,610 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 148 predicate places. [2023-08-25 22:00:22,610 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 138 transitions, 2790 flow [2023-08-25 22:00:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 57.5) internal successors, (1265), 22 states have internal predecessors, (1265), 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 22:00:22,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:22,610 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:22,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:22,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-25 22:00:22,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:22,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2053048363, now seen corresponding path program 8 times [2023-08-25 22:00:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:22,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921997702] [2023-08-25 22:00:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:22,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:23,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:23,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921997702] [2023-08-25 22:00:23,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921997702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:23,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066332527] [2023-08-25 22:00:23,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 22:00:23,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:23,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:23,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:23,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 22:00:23,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 22:00:23,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:23,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 22:00:23,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:23,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:23,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066332527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:23,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:23,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-08-25 22:00:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632486845] [2023-08-25 22:00:23,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:23,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 22:00:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 22:00:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-08-25 22:00:23,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:23,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 138 transitions, 2790 flow. Second operand has 26 states, 26 states have (on average 57.46153846153846) internal successors, (1494), 26 states have internal predecessors, (1494), 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 22:00:23,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:23,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:23,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:23,978 INFO L124 PetriNetUnfolderBase]: 664/1211 cut-off events. [2023-08-25 22:00:23,978 INFO L125 PetriNetUnfolderBase]: For 101491/101491 co-relation queries the response was YES. [2023-08-25 22:00:23,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 1211 events. 664/1211 cut-off events. For 101491/101491 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5495 event pairs, 108 based on Foata normal form. 32/1243 useless extension candidates. Maximal degree in co-relation 14110. Up to 467 conditions per place. [2023-08-25 22:00:23,990 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 106 selfloop transitions, 96 changer transitions 53/255 dead transitions. [2023-08-25 22:00:23,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 255 transitions, 6448 flow [2023-08-25 22:00:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 22:00:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 22:00:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1761 transitions. [2023-08-25 22:00:23,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38925729442970824 [2023-08-25 22:00:23,993 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1761 transitions. [2023-08-25 22:00:23,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1761 transitions. [2023-08-25 22:00:23,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:23,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1761 transitions. [2023-08-25 22:00:23,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 60.724137931034484) internal successors, (1761), 29 states have internal predecessors, (1761), 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 22:00:24,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 156.0) internal successors, (4680), 30 states have internal predecessors, (4680), 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 22:00:24,000 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 156.0) internal successors, (4680), 30 states have internal predecessors, (4680), 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 22:00:24,001 INFO L175 Difference]: Start difference. First operand has 172 places, 138 transitions, 2790 flow. Second operand 29 states and 1761 transitions. [2023-08-25 22:00:24,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 255 transitions, 6448 flow [2023-08-25 22:00:24,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 255 transitions, 4954 flow, removed 723 selfloop flow, removed 12 redundant places. [2023-08-25 22:00:24,177 INFO L231 Difference]: Finished difference. Result has 198 places, 170 transitions, 3157 flow [2023-08-25 22:00:24,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3157, PETRI_PLACES=198, PETRI_TRANSITIONS=170} [2023-08-25 22:00:24,177 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 174 predicate places. [2023-08-25 22:00:24,177 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 170 transitions, 3157 flow [2023-08-25 22:00:24,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 57.46153846153846) internal successors, (1494), 26 states have internal predecessors, (1494), 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 22:00:24,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:24,178 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:24,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:24,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:24,383 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:24,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -340043839, now seen corresponding path program 9 times [2023-08-25 22:00:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:24,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433071569] [2023-08-25 22:00:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:24,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:24,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433071569] [2023-08-25 22:00:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433071569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639620684] [2023-08-25 22:00:24,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 22:00:24,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:24,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:24,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:24,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 22:00:24,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-25 22:00:24,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:24,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 22:00:24,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:24,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639620684] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:24,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2023-08-25 22:00:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607036700] [2023-08-25 22:00:24,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:24,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 22:00:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 22:00:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2023-08-25 22:00:24,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:24,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 170 transitions, 3157 flow. Second operand has 30 states, 30 states have (on average 57.36666666666667) internal successors, (1721), 30 states have internal predecessors, (1721), 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 22:00:24,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:24,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:24,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:25,636 INFO L124 PetriNetUnfolderBase]: 856/1559 cut-off events. [2023-08-25 22:00:25,636 INFO L125 PetriNetUnfolderBase]: For 172598/172598 co-relation queries the response was YES. [2023-08-25 22:00:25,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18976 conditions, 1559 events. 856/1559 cut-off events. For 172598/172598 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7035 event pairs, 20 based on Foata normal form. 32/1591 useless extension candidates. Maximal degree in co-relation 18898. Up to 623 conditions per place. [2023-08-25 22:00:25,651 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 82 selfloop transitions, 189 changer transitions 59/330 dead transitions. [2023-08-25 22:00:25,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 330 transitions, 7978 flow [2023-08-25 22:00:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 22:00:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 22:00:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2433 transitions. [2023-08-25 22:00:25,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38990384615384616 [2023-08-25 22:00:25,654 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2433 transitions. [2023-08-25 22:00:25,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2433 transitions. [2023-08-25 22:00:25,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:25,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2433 transitions. [2023-08-25 22:00:25,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 60.825) internal successors, (2433), 40 states have internal predecessors, (2433), 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 22:00:25,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 156.0) internal successors, (6396), 41 states have internal predecessors, (6396), 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 22:00:25,662 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 156.0) internal successors, (6396), 41 states have internal predecessors, (6396), 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 22:00:25,662 INFO L175 Difference]: Start difference. First operand has 198 places, 170 transitions, 3157 flow. Second operand 40 states and 2433 transitions. [2023-08-25 22:00:25,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 330 transitions, 7978 flow [2023-08-25 22:00:25,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 330 transitions, 7294 flow, removed 310 selfloop flow, removed 11 redundant places. [2023-08-25 22:00:25,860 INFO L231 Difference]: Finished difference. Result has 239 places, 211 transitions, 4434 flow [2023-08-25 22:00:25,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4434, PETRI_PLACES=239, PETRI_TRANSITIONS=211} [2023-08-25 22:00:25,860 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 215 predicate places. [2023-08-25 22:00:25,860 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 211 transitions, 4434 flow [2023-08-25 22:00:25,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 57.36666666666667) internal successors, (1721), 30 states have internal predecessors, (1721), 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 22:00:25,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:25,861 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:25,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:26,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:26,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:26,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash -184889386, now seen corresponding path program 10 times [2023-08-25 22:00:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:26,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919690834] [2023-08-25 22:00:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:26,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:26,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919690834] [2023-08-25 22:00:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919690834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241467459] [2023-08-25 22:00:26,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 22:00:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:26,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:26,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 22:00:26,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 22:00:26,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:26,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 22:00:26,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:26,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241467459] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:26,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:26,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 25 [2023-08-25 22:00:26,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469122364] [2023-08-25 22:00:26,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:26,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 22:00:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 22:00:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2023-08-25 22:00:26,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:26,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 211 transitions, 4434 flow. Second operand has 27 states, 27 states have (on average 57.44444444444444) internal successors, (1551), 27 states have internal predecessors, (1551), 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 22:00:26,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:26,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:26,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:27,848 INFO L124 PetriNetUnfolderBase]: 876/1587 cut-off events. [2023-08-25 22:00:27,849 INFO L125 PetriNetUnfolderBase]: For 241706/241706 co-relation queries the response was YES. [2023-08-25 22:00:27,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21410 conditions, 1587 events. 876/1587 cut-off events. For 241706/241706 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7177 event pairs, 12 based on Foata normal form. 24/1611 useless extension candidates. Maximal degree in co-relation 21318. Up to 631 conditions per place. [2023-08-25 22:00:27,868 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 70 selfloop transitions, 206 changer transitions 84/360 dead transitions. [2023-08-25 22:00:27,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 360 transitions, 9406 flow [2023-08-25 22:00:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-25 22:00:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-25 22:00:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2739 transitions. [2023-08-25 22:00:27,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901709401709402 [2023-08-25 22:00:27,874 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2739 transitions. [2023-08-25 22:00:27,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2739 transitions. [2023-08-25 22:00:27,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:27,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2739 transitions. [2023-08-25 22:00:27,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 60.86666666666667) internal successors, (2739), 45 states have internal predecessors, (2739), 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 22:00:27,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 156.0) internal successors, (7176), 46 states have internal predecessors, (7176), 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 22:00:27,886 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 156.0) internal successors, (7176), 46 states have internal predecessors, (7176), 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 22:00:27,886 INFO L175 Difference]: Start difference. First operand has 239 places, 211 transitions, 4434 flow. Second operand 45 states and 2739 transitions. [2023-08-25 22:00:27,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 360 transitions, 9406 flow [2023-08-25 22:00:28,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 360 transitions, 8396 flow, removed 416 selfloop flow, removed 17 redundant places. [2023-08-25 22:00:28,217 INFO L231 Difference]: Finished difference. Result has 276 places, 224 transitions, 4726 flow [2023-08-25 22:00:28,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4726, PETRI_PLACES=276, PETRI_TRANSITIONS=224} [2023-08-25 22:00:28,217 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 252 predicate places. [2023-08-25 22:00:28,218 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 224 transitions, 4726 flow [2023-08-25 22:00:28,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 57.44444444444444) internal successors, (1551), 27 states have internal predecessors, (1551), 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 22:00:28,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:28,218 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:28,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:28,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 22:00:28,419 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:28,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:28,419 INFO L85 PathProgramCache]: Analyzing trace with hash 251298398, now seen corresponding path program 11 times [2023-08-25 22:00:28,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:28,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464325257] [2023-08-25 22:00:28,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:28,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464325257] [2023-08-25 22:00:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464325257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645473720] [2023-08-25 22:00:28,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 22:00:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:28,686 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:28,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 22:00:28,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-25 22:00:28,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:28,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-25 22:00:28,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:28,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:00:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:29,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645473720] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:00:29,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:00:29,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 45 [2023-08-25 22:00:29,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116871796] [2023-08-25 22:00:29,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:00:29,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-25 22:00:29,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:29,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-25 22:00:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1677, Unknown=0, NotChecked=0, Total=2162 [2023-08-25 22:00:29,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 22:00:29,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 224 transitions, 4726 flow. Second operand has 47 states, 47 states have (on average 57.234042553191486) internal successors, (2690), 47 states have internal predecessors, (2690), 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 22:00:29,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:29,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 22:00:29,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:30,334 INFO L124 PetriNetUnfolderBase]: 984/1779 cut-off events. [2023-08-25 22:00:30,334 INFO L125 PetriNetUnfolderBase]: For 322417/322417 co-relation queries the response was YES. [2023-08-25 22:00:30,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25976 conditions, 1779 events. 984/1779 cut-off events. For 322417/322417 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8195 event pairs, 29 based on Foata normal form. 12/1791 useless extension candidates. Maximal degree in co-relation 25874. Up to 707 conditions per place. [2023-08-25 22:00:30,351 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 82 selfloop transitions, 225 changer transitions 90/397 dead transitions. [2023-08-25 22:00:30,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 397 transitions, 11022 flow [2023-08-25 22:00:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-25 22:00:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-25 22:00:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2918 transitions. [2023-08-25 22:00:30,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38969017094017094 [2023-08-25 22:00:30,357 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2918 transitions. [2023-08-25 22:00:30,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2918 transitions. [2023-08-25 22:00:30,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:30,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2918 transitions. [2023-08-25 22:00:30,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 60.791666666666664) internal successors, (2918), 48 states have internal predecessors, (2918), 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 22:00:30,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 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 22:00:30,370 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 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 22:00:30,370 INFO L175 Difference]: Start difference. First operand has 276 places, 224 transitions, 4726 flow. Second operand 48 states and 2918 transitions. [2023-08-25 22:00:30,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 397 transitions, 11022 flow [2023-08-25 22:00:30,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 397 transitions, 9518 flow, removed 577 selfloop flow, removed 35 redundant places. [2023-08-25 22:00:30,807 INFO L231 Difference]: Finished difference. Result has 296 places, 251 transitions, 5159 flow [2023-08-25 22:00:30,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5159, PETRI_PLACES=296, PETRI_TRANSITIONS=251} [2023-08-25 22:00:30,807 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 272 predicate places. [2023-08-25 22:00:30,807 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 251 transitions, 5159 flow [2023-08-25 22:00:30,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 57.234042553191486) internal successors, (2690), 47 states have internal predecessors, (2690), 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 22:00:30,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:00:30,808 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:00:30,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:31,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 22:00:31,008 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 22:00:31,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:00:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash 267792798, now seen corresponding path program 12 times [2023-08-25 22:00:31,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:00:31,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55500822] [2023-08-25 22:00:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:00:31,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:00:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:00:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:00:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55500822] [2023-08-25 22:00:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55500822] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:00:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604558583] [2023-08-25 22:00:31,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 22:00:31,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:00:31,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:00:31,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:00:31,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 22:00:31,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-08-25 22:00:31,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 22:00:31,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 22:00:31,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:00:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:00:31,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 22:00:31,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604558583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:00:31,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 22:00:31,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2023-08-25 22:00:31,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810903274] [2023-08-25 22:00:31,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:00:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 22:00:31,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:00:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 22:00:31,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-08-25 22:00:31,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 156 [2023-08-25 22:00:31,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 251 transitions, 5159 flow. Second operand has 13 states, 13 states have (on average 57.23076923076923) internal successors, (744), 13 states have internal predecessors, (744), 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 22:00:31,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:00:31,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 156 [2023-08-25 22:00:31,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:00:32,641 INFO L124 PetriNetUnfolderBase]: 4367/6839 cut-off events. [2023-08-25 22:00:32,641 INFO L125 PetriNetUnfolderBase]: For 1318302/1318302 co-relation queries the response was YES. [2023-08-25 22:00:32,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93226 conditions, 6839 events. 4367/6839 cut-off events. For 1318302/1318302 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 36876 event pairs, 94 based on Foata normal form. 360/7199 useless extension candidates. Maximal degree in co-relation 93116. Up to 2590 conditions per place. [2023-08-25 22:00:32,697 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 0 selfloop transitions, 0 changer transitions 1426/1426 dead transitions. [2023-08-25 22:00:32,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1426 transitions, 29178 flow [2023-08-25 22:00:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 22:00:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 22:00:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 812 transitions. [2023-08-25 22:00:32,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40039447731755423 [2023-08-25 22:00:32,699 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 812 transitions. [2023-08-25 22:00:32,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 812 transitions. [2023-08-25 22:00:32,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:00:32,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 812 transitions. [2023-08-25 22:00:32,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.46153846153846) internal successors, (812), 13 states have internal predecessors, (812), 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 22:00:32,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 156.0) internal successors, (2184), 14 states have internal predecessors, (2184), 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 22:00:32,702 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 156.0) internal successors, (2184), 14 states have internal predecessors, (2184), 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 22:00:32,702 INFO L175 Difference]: Start difference. First operand has 296 places, 251 transitions, 5159 flow. Second operand 13 states and 812 transitions. [2023-08-25 22:00:32,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1426 transitions, 29178 flow [2023-08-25 22:00:34,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1426 transitions, 25717 flow, removed 374 selfloop flow, removed 45 redundant places. [2023-08-25 22:00:34,192 INFO L231 Difference]: Finished difference. Result has 262 places, 0 transitions, 0 flow [2023-08-25 22:00:34,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3809, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=262, PETRI_TRANSITIONS=0} [2023-08-25 22:00:34,192 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 238 predicate places. [2023-08-25 22:00:34,192 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 0 transitions, 0 flow [2023-08-25 22:00:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.23076923076923) internal successors, (744), 13 states have internal predecessors, (744), 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 22:00:34,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (10 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-25 22:00:34,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-25 22:00:34,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-25 22:00:34,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 22:00:34,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 22:00:34,401 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 1, 1, 1] [2023-08-25 22:00:34,404 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 22:00:34,404 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 22:00:34,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 10:00:34 BasicIcfg [2023-08-25 22:00:34,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 22:00:34,407 INFO L158 Benchmark]: Toolchain (without parser) took 20390.73ms. Allocated memory was 383.8MB in the beginning and 885.0MB in the end (delta: 501.2MB). Free memory was 340.7MB in the beginning and 659.5MB in the end (delta: -318.8MB). Peak memory consumption was 541.7MB. Max. memory is 16.0GB. [2023-08-25 22:00:34,407 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory was 361.2MB in the beginning and 361.1MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 22:00:34,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.99ms. Allocated memory is still 383.8MB. Free memory was 340.4MB in the beginning and 320.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 22:00:34,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.20ms. Allocated memory is still 383.8MB. Free memory was 320.9MB in the beginning and 318.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:00:34,407 INFO L158 Benchmark]: Boogie Preprocessor took 34.76ms. Allocated memory is still 383.8MB. Free memory was 318.8MB in the beginning and 317.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:00:34,407 INFO L158 Benchmark]: RCFGBuilder took 376.54ms. Allocated memory is still 383.8MB. Free memory was 317.3MB in the beginning and 348.5MB in the end (delta: -31.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. [2023-08-25 22:00:34,407 INFO L158 Benchmark]: TraceAbstraction took 19614.30ms. Allocated memory was 383.8MB in the beginning and 885.0MB in the end (delta: 501.2MB). Free memory was 347.7MB in the beginning and 659.5MB in the end (delta: -311.8MB). Peak memory consumption was 545.2MB. Max. memory is 16.0GB. [2023-08-25 22:00:34,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory was 361.2MB in the beginning and 361.1MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 319.99ms. Allocated memory is still 383.8MB. Free memory was 340.4MB in the beginning and 320.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.20ms. Allocated memory is still 383.8MB. Free memory was 320.9MB in the beginning and 318.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.76ms. Allocated memory is still 383.8MB. Free memory was 318.8MB in the beginning and 317.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 376.54ms. Allocated memory is still 383.8MB. Free memory was 317.3MB in the beginning and 348.5MB in the end (delta: -31.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.0GB. * TraceAbstraction took 19614.30ms. Allocated memory was 383.8MB in the beginning and 885.0MB in the end (delta: 501.2MB). Free memory was 347.7MB in the beginning and 659.5MB in the end (delta: -311.8MB). Peak memory consumption was 545.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 77 PlacesBefore, 24 PlacesAfterwards, 76 TransitionsBefore, 19 TransitionsAfterwards, 1792 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 78 TotalNumberOfCompositions, 2074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1641, independent: 1592, independent conditional: 0, independent unconditional: 1592, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 973, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1641, independent: 639, independent conditional: 0, independent unconditional: 639, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 973, unknown conditional: 0, unknown unconditional: 973] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 716]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 719]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 693]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.5s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2945 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2945 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2633 IncrementalHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 305 mSolverCounterUnsat, 0 mSDtfsCounter, 2633 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 703 GetRequests, 221 SyntacticMatches, 24 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7028 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5159occurred in iteration=16, InterpolantAutomatonStates: 317, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2174 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1889 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 36 InterpolantComputations, 8 PerfectInterpolantSequences, 190/944 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 22:00:34,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...