/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 -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/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 06:53:14,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 06:53:14,412 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 06:53:14,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 06:53:14,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 06:53:14,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 06:53:14,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 06:53:14,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 06:53:14,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 06:53:14,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 06:53:14,452 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 06:53:14,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 06:53:14,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 06:53:14,454 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 06:53:14,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 06:53:14,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 06:53:14,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 06:53:14,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 06:53:14,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 06:53:14,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 06:53:14,455 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 06:53:14,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 06:53:14,456 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 06:53:14,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 06:53:14,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 06:53:14,457 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 06:53:14,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 06:53:14,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:53:14,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 06:53:14,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 06:53:14,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 06:53:14,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 06:53:14,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 06:53:14,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 06:53:14,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 06:53:14,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 06:53:14,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 06:53:14,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 06:53:14,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 06:53:14,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 06:53:14,760 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 06:53:14,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-25 06:53:15,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 06:53:16,234 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 06:53:16,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-25 06:53:16,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598eef1db/03a2f0d936eb41a1afb99d0874523e75/FLAG06fe16404 [2023-08-25 06:53:16,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598eef1db/03a2f0d936eb41a1afb99d0874523e75 [2023-08-25 06:53:16,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 06:53:16,264 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 06:53:16,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 06:53:16,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 06:53:16,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 06:53:16,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b4a382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16, skipping insertion in model container [2023-08-25 06:53:16,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,294 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 06:53:16,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:53:16,466 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 06:53:16,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:53:16,498 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:53:16,498 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:53:16,504 INFO L206 MainTranslator]: Completed translation [2023-08-25 06:53:16,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16 WrapperNode [2023-08-25 06:53:16,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 06:53:16,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 06:53:16,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 06:53:16,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 06:53:16,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,541 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 233 [2023-08-25 06:53:16,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 06:53:16,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 06:53:16,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 06:53:16,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 06:53:16,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 06:53:16,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 06:53:16,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 06:53:16,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 06:53:16,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (1/1) ... [2023-08-25 06:53:16,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:53:16,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:16,610 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 06:53:16,612 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 06:53:16,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 06:53:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 06:53:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 06:53:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 06:53:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 06:53:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 06:53:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 06:53:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-25 06:53:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-25 06:53:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 06:53:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 06:53:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 06:53:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 06:53:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 06:53:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 06:53:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 06:53:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 06:53:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 06:53:16,640 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 06:53:16,731 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 06:53:16,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 06:53:17,188 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 06:53:17,337 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 06:53:17,338 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-25 06:53:17,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:53:17 BoogieIcfgContainer [2023-08-25 06:53:17,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 06:53:17,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 06:53:17,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 06:53:17,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 06:53:17,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:53:16" (1/3) ... [2023-08-25 06:53:17,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6858cbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:53:17, skipping insertion in model container [2023-08-25 06:53:17,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:53:16" (2/3) ... [2023-08-25 06:53:17,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6858cbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:53:17, skipping insertion in model container [2023-08-25 06:53:17,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:53:17" (3/3) ... [2023-08-25 06:53:17,347 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-25 06:53:17,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 06:53:17,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-25 06:53:17,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 06:53:17,454 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 06:53:17,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 246 transitions, 524 flow [2023-08-25 06:53:17,602 INFO L124 PetriNetUnfolderBase]: 12/242 cut-off events. [2023-08-25 06:53:17,602 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 06:53:17,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 242 events. 12/242 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 262 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-25 06:53:17,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 246 transitions, 524 flow [2023-08-25 06:53:17,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 229 transitions, 482 flow [2023-08-25 06:53:17,623 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 06:53:17,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 229 transitions, 482 flow [2023-08-25 06:53:17,641 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 229 transitions, 482 flow [2023-08-25 06:53:17,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 229 transitions, 482 flow [2023-08-25 06:53:17,693 INFO L124 PetriNetUnfolderBase]: 12/229 cut-off events. [2023-08-25 06:53:17,693 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 06:53:17,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 229 events. 12/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 259 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-25 06:53:17,702 INFO L119 LiptonReduction]: Number of co-enabled transitions 7430 [2023-08-25 06:53:25,102 INFO L134 LiptonReduction]: Checked pairs total: 10345 [2023-08-25 06:53:25,102 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-25 06:53:25,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 06:53:25,125 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@97e93c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 06:53:25,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-08-25 06:53:25,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 06:53:25,126 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 06:53:25,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:53:25,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:25,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 06:53:25,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:25,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1131, now seen corresponding path program 1 times [2023-08-25 06:53:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:25,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025936168] [2023-08-25 06:53:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:25,214 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 06:53:25,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:25,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025936168] [2023-08-25 06:53:25,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025936168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:53:25,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:53:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 06:53:25,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387467994] [2023-08-25 06:53:25,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 06:53:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:25,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 06:53:25,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 06:53:25,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 547 [2023-08-25 06:53:25,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 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 06:53:25,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:25,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 547 [2023-08-25 06:53:25,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:25,358 INFO L124 PetriNetUnfolderBase]: 249/340 cut-off events. [2023-08-25 06:53:25,358 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-25 06:53:25,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 340 events. 249/340 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 641 event pairs, 117 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 508. Up to 341 conditions per place. [2023-08-25 06:53:25,363 INFO L140 encePairwiseOnDemand]: 506/547 looper letters, 25 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-25 06:53:25,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 124 flow [2023-08-25 06:53:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 06:53:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 06:53:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 484 transitions. [2023-08-25 06:53:25,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424131627056673 [2023-08-25 06:53:25,381 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 484 transitions. [2023-08-25 06:53:25,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 484 transitions. [2023-08-25 06:53:25,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:25,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 484 transitions. [2023-08-25 06:53:25,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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 06:53:25,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 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 06:53:25,397 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 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 06:53:25,398 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 156 flow. Second operand 2 states and 484 transitions. [2023-08-25 06:53:25,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 124 flow [2023-08-25 06:53:25,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 108 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-25 06:53:25,404 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 58 flow [2023-08-25 06:53:25,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-25 06:53:25,408 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -48 predicate places. [2023-08-25 06:53:25,408 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 58 flow [2023-08-25 06:53:25,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 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 06:53:25,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:25,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:25,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 06:53:25,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:25,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1631969889, now seen corresponding path program 1 times [2023-08-25 06:53:25,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:25,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463191840] [2023-08-25 06:53:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:25,803 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 06:53:25,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:25,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463191840] [2023-08-25 06:53:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463191840] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:53:25,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:53:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 06:53:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068294698] [2023-08-25 06:53:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 06:53:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 06:53:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 06:53:25,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 547 [2023-08-25 06:53:25,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 06:53:25,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:25,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 547 [2023-08-25 06:53:25,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:25,928 INFO L124 PetriNetUnfolderBase]: 431/611 cut-off events. [2023-08-25 06:53:25,928 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-25 06:53:25,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 611 events. 431/611 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1718 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1251. Up to 405 conditions per place. [2023-08-25 06:53:25,931 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 39 selfloop transitions, 3 changer transitions 3/45 dead transitions. [2023-08-25 06:53:25,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 45 transitions, 195 flow [2023-08-25 06:53:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 06:53:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 06:53:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-08-25 06:53:25,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076782449725777 [2023-08-25 06:53:25,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-08-25 06:53:25,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-08-25 06:53:25,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:25,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-08-25 06:53:25,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 06:53:25,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 06:53:25,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 06:53:25,944 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 58 flow. Second operand 3 states and 669 transitions. [2023-08-25 06:53:25,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 45 transitions, 195 flow [2023-08-25 06:53:25,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 45 transitions, 195 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:53:25,946 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 81 flow [2023-08-25 06:53:25,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-08-25 06:53:25,948 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -45 predicate places. [2023-08-25 06:53:25,948 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 81 flow [2023-08-25 06:53:25,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 06:53:25,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:25,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 06:53:25,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:25,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash 164483541, now seen corresponding path program 1 times [2023-08-25 06:53:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:25,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466966045] [2023-08-25 06:53:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:26,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:26,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466966045] [2023-08-25 06:53:26,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466966045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:53:26,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:53:26,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 06:53:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994471153] [2023-08-25 06:53:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:26,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:26,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:26,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:26,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:53:26,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-25 06:53:26,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:26,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:26,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-25 06:53:26,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:26,340 INFO L124 PetriNetUnfolderBase]: 395/575 cut-off events. [2023-08-25 06:53:26,340 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-08-25 06:53:26,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 575 events. 395/575 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1737 event pairs, 45 based on Foata normal form. 36/611 useless extension candidates. Maximal degree in co-relation 1373. Up to 369 conditions per place. [2023-08-25 06:53:26,343 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 33 selfloop transitions, 3 changer transitions 20/56 dead transitions. [2023-08-25 06:53:26,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 56 transitions, 261 flow [2023-08-25 06:53:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 842 transitions. [2023-08-25 06:53:26,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38482632541133455 [2023-08-25 06:53:26,346 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 842 transitions. [2023-08-25 06:53:26,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 842 transitions. [2023-08-25 06:53:26,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:26,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 842 transitions. [2023-08-25 06:53:26,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 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 06:53:26,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:26,354 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:26,354 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 81 flow. Second operand 4 states and 842 transitions. [2023-08-25 06:53:26,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 56 transitions, 261 flow [2023-08-25 06:53:26,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 06:53:26,357 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 91 flow [2023-08-25 06:53:26,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-25 06:53:26,357 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -42 predicate places. [2023-08-25 06:53:26,358 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 91 flow [2023-08-25 06:53:26,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:26,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:26,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:26,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 06:53:26,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:26,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1307953268, now seen corresponding path program 1 times [2023-08-25 06:53:26,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:26,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988858710] [2023-08-25 06:53:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:26,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:26,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:26,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988858710] [2023-08-25 06:53:26,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988858710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:53:26,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:53:26,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 06:53:26,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486826046] [2023-08-25 06:53:26,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:26,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:53:26,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:26,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:53:26,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:53:26,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 547 [2023-08-25 06:53:26,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 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 06:53:26,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:26,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 547 [2023-08-25 06:53:26,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:26,689 INFO L124 PetriNetUnfolderBase]: 475/662 cut-off events. [2023-08-25 06:53:26,689 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-08-25 06:53:26,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 662 events. 475/662 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1845 event pairs, 65 based on Foata normal form. 40/702 useless extension candidates. Maximal degree in co-relation 1770. Up to 373 conditions per place. [2023-08-25 06:53:26,693 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-08-25 06:53:26,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 62 transitions, 321 flow [2023-08-25 06:53:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 829 transitions. [2023-08-25 06:53:26,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3788848263254113 [2023-08-25 06:53:26,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 829 transitions. [2023-08-25 06:53:26,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 829 transitions. [2023-08-25 06:53:26,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:26,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 829 transitions. [2023-08-25 06:53:26,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 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 06:53:26,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:26,704 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:26,704 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 91 flow. Second operand 4 states and 829 transitions. [2023-08-25 06:53:26,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 62 transitions, 321 flow [2023-08-25 06:53:26,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 62 transitions, 309 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 06:53:26,707 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 129 flow [2023-08-25 06:53:26,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-25 06:53:26,708 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -40 predicate places. [2023-08-25 06:53:26,708 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 129 flow [2023-08-25 06:53:26,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 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 06:53:26,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:26,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:26,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 06:53:26,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:26,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1704050576, now seen corresponding path program 2 times [2023-08-25 06:53:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:26,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204718606] [2023-08-25 06:53:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:26,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:26,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204718606] [2023-08-25 06:53:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204718606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:53:26,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:53:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 06:53:26,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500983529] [2023-08-25 06:53:26,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:26,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:53:26,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-25 06:53:26,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:26,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:26,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-25 06:53:26,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:26,975 INFO L124 PetriNetUnfolderBase]: 801/1128 cut-off events. [2023-08-25 06:53:26,976 INFO L125 PetriNetUnfolderBase]: For 1447/1447 co-relation queries the response was YES. [2023-08-25 06:53:26,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 1128 events. 801/1128 cut-off events. For 1447/1447 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3558 event pairs, 199 based on Foata normal form. 58/1186 useless extension candidates. Maximal degree in co-relation 3516. Up to 605 conditions per place. [2023-08-25 06:53:26,983 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 63 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-08-25 06:53:26,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 437 flow [2023-08-25 06:53:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 843 transitions. [2023-08-25 06:53:26,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852833638025594 [2023-08-25 06:53:26,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 843 transitions. [2023-08-25 06:53:26,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 843 transitions. [2023-08-25 06:53:26,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:26,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 843 transitions. [2023-08-25 06:53:26,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 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 06:53:26,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:26,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:26,992 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 129 flow. Second operand 4 states and 843 transitions. [2023-08-25 06:53:26,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 437 flow [2023-08-25 06:53:26,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 06:53:26,995 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 204 flow [2023-08-25 06:53:26,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-25 06:53:26,996 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -36 predicate places. [2023-08-25 06:53:26,996 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 204 flow [2023-08-25 06:53:26,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:26,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:26,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:26,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 06:53:26,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:26,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 214245052, now seen corresponding path program 3 times [2023-08-25 06:53:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430739014] [2023-08-25 06:53:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:27,092 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 06:53:27,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430739014] [2023-08-25 06:53:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430739014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931028969] [2023-08-25 06:53:27,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:53:27,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:27,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:27,097 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 06:53:27,117 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 06:53:27,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:53:27,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:53:27,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 06:53:27,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:27,462 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 06:53:27,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931028969] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:27,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 06:53:27,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-08-25 06:53:27,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721544727] [2023-08-25 06:53:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:27,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-08-25 06:53:27,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-25 06:53:27,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:27,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:27,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-25 06:53:27,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:27,733 INFO L124 PetriNetUnfolderBase]: 1143/1618 cut-off events. [2023-08-25 06:53:27,733 INFO L125 PetriNetUnfolderBase]: For 2615/2615 co-relation queries the response was YES. [2023-08-25 06:53:27,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 1618 events. 1143/1618 cut-off events. For 2615/2615 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5798 event pairs, 253 based on Foata normal form. 36/1654 useless extension candidates. Maximal degree in co-relation 5705. Up to 822 conditions per place. [2023-08-25 06:53:27,745 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 67 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-08-25 06:53:27,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 76 transitions, 521 flow [2023-08-25 06:53:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 847 transitions. [2023-08-25 06:53:27,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38711151736745886 [2023-08-25 06:53:27,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 847 transitions. [2023-08-25 06:53:27,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 847 transitions. [2023-08-25 06:53:27,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:27,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 847 transitions. [2023-08-25 06:53:27,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 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 06:53:27,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:27,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:27,777 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 204 flow. Second operand 4 states and 847 transitions. [2023-08-25 06:53:27,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 76 transitions, 521 flow [2023-08-25 06:53:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 76 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 06:53:27,784 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 269 flow [2023-08-25 06:53:27,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=269, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-25 06:53:27,786 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -32 predicate places. [2023-08-25 06:53:27,786 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 269 flow [2023-08-25 06:53:27,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:27,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:27,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:27,800 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 06:53:27,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-25 06:53:27,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:27,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2120497561, now seen corresponding path program 2 times [2023-08-25 06:53:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538808058] [2023-08-25 06:53:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538808058] [2023-08-25 06:53:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538808058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:53:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:53:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 06:53:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729246989] [2023-08-25 06:53:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:53:28,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 547 [2023-08-25 06:53:28,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 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 06:53:28,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:28,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 547 [2023-08-25 06:53:28,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:28,333 INFO L124 PetriNetUnfolderBase]: 1225/1732 cut-off events. [2023-08-25 06:53:28,333 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2023-08-25 06:53:28,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 1732 events. 1225/1732 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6339 event pairs, 305 based on Foata normal form. 22/1754 useless extension candidates. Maximal degree in co-relation 6659. Up to 1593 conditions per place. [2023-08-25 06:53:28,345 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 51 selfloop transitions, 4 changer transitions 14/69 dead transitions. [2023-08-25 06:53:28,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 547 flow [2023-08-25 06:53:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:28,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 821 transitions. [2023-08-25 06:53:28,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37522851919561245 [2023-08-25 06:53:28,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 821 transitions. [2023-08-25 06:53:28,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 821 transitions. [2023-08-25 06:53:28,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:28,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 821 transitions. [2023-08-25 06:53:28,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 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 06:53:28,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:28,354 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:28,354 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 269 flow. Second operand 4 states and 821 transitions. [2023-08-25 06:53:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 547 flow [2023-08-25 06:53:28,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:53:28,359 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 307 flow [2023-08-25 06:53:28,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-25 06:53:28,360 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -27 predicate places. [2023-08-25 06:53:28,360 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 307 flow [2023-08-25 06:53:28,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 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 06:53:28,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:28,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:28,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 06:53:28,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:28,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1440095181, now seen corresponding path program 3 times [2023-08-25 06:53:28,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:28,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733046395] [2023-08-25 06:53:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:28,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733046395] [2023-08-25 06:53:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733046395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:53:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:53:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 06:53:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592431718] [2023-08-25 06:53:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:53:28,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-25 06:53:28,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:28,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:28,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-25 06:53:28,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:28,611 INFO L124 PetriNetUnfolderBase]: 795/1086 cut-off events. [2023-08-25 06:53:28,611 INFO L125 PetriNetUnfolderBase]: For 4960/4960 co-relation queries the response was YES. [2023-08-25 06:53:28,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 1086 events. 795/1086 cut-off events. For 4960/4960 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3278 event pairs, 229 based on Foata normal form. 80/1166 useless extension candidates. Maximal degree in co-relation 4852. Up to 797 conditions per place. [2023-08-25 06:53:28,619 INFO L140 encePairwiseOnDemand]: 543/547 looper letters, 47 selfloop transitions, 7 changer transitions 3/57 dead transitions. [2023-08-25 06:53:28,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 456 flow [2023-08-25 06:53:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 830 transitions. [2023-08-25 06:53:28,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793418647166362 [2023-08-25 06:53:28,622 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 830 transitions. [2023-08-25 06:53:28,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 830 transitions. [2023-08-25 06:53:28,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:28,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 830 transitions. [2023-08-25 06:53:28,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 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 06:53:28,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:28,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:28,628 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 307 flow. Second operand 4 states and 830 transitions. [2023-08-25 06:53:28,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 456 flow [2023-08-25 06:53:28,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 450 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 06:53:28,635 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 277 flow [2023-08-25 06:53:28,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-25 06:53:28,636 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -26 predicate places. [2023-08-25 06:53:28,636 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 277 flow [2023-08-25 06:53:28,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 06:53:28,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:28,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:28,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 06:53:28,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:28,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1894704771, now seen corresponding path program 1 times [2023-08-25 06:53:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747050558] [2023-08-25 06:53:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:53:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747050558] [2023-08-25 06:53:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747050558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40175145] [2023-08-25 06:53:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:28,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:28,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:28,739 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 06:53:28,782 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 06:53:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:28,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 06:53:28,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:53:28,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:53:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40175145] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:29,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 06:53:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-08-25 06:53:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179340679] [2023-08-25 06:53:29,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:29,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-08-25 06:53:29,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-25 06:53:29,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 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 06:53:29,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:29,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-25 06:53:29,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:29,282 INFO L124 PetriNetUnfolderBase]: 1186/1631 cut-off events. [2023-08-25 06:53:29,283 INFO L125 PetriNetUnfolderBase]: For 6615/6615 co-relation queries the response was YES. [2023-08-25 06:53:29,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 1631 events. 1186/1631 cut-off events. For 6615/6615 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5549 event pairs, 140 based on Foata normal form. 60/1691 useless extension candidates. Maximal degree in co-relation 7181. Up to 933 conditions per place. [2023-08-25 06:53:29,299 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 69 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2023-08-25 06:53:29,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 634 flow [2023-08-25 06:53:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-08-25 06:53:29,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386654478976234 [2023-08-25 06:53:29,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-08-25 06:53:29,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-08-25 06:53:29,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:29,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-08-25 06:53:29,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 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 06:53:29,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:29,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:29,310 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 277 flow. Second operand 4 states and 846 transitions. [2023-08-25 06:53:29,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 634 flow [2023-08-25 06:53:29,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 577 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-25 06:53:29,328 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 309 flow [2023-08-25 06:53:29,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-25 06:53:29,330 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -27 predicate places. [2023-08-25 06:53:29,330 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 309 flow [2023-08-25 06:53:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 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 06:53:29,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:29,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:29,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 06:53:29,536 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 06:53:29,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:29,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash 590938487, now seen corresponding path program 1 times [2023-08-25 06:53:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:29,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636254487] [2023-08-25 06:53:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:29,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:29,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636254487] [2023-08-25 06:53:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636254487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301568783] [2023-08-25 06:53:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:29,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:29,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:29,649 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 06:53:29,657 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 06:53:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:29,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 06:53:29,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:29,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:29,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301568783] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:29,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 06:53:29,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-08-25 06:53:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349839016] [2023-08-25 06:53:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:53:29,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-08-25 06:53:29,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-25 06:53:29,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 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 06:53:29,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:29,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-25 06:53:29,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:30,275 INFO L124 PetriNetUnfolderBase]: 2236/3091 cut-off events. [2023-08-25 06:53:30,275 INFO L125 PetriNetUnfolderBase]: For 11300/11300 co-relation queries the response was YES. [2023-08-25 06:53:30,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13091 conditions, 3091 events. 2236/3091 cut-off events. For 11300/11300 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12001 event pairs, 330 based on Foata normal form. 146/3237 useless extension candidates. Maximal degree in co-relation 13078. Up to 1467 conditions per place. [2023-08-25 06:53:30,300 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 82 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-25 06:53:30,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 93 transitions, 828 flow [2023-08-25 06:53:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-08-25 06:53:30,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386654478976234 [2023-08-25 06:53:30,304 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-08-25 06:53:30,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-08-25 06:53:30,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:30,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-08-25 06:53:30,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 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 06:53:30,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:30,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:30,310 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 309 flow. Second operand 4 states and 846 transitions. [2023-08-25 06:53:30,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 93 transitions, 828 flow [2023-08-25 06:53:30,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 828 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:53:30,318 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 427 flow [2023-08-25 06:53:30,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-25 06:53:30,319 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -22 predicate places. [2023-08-25 06:53:30,319 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 427 flow [2023-08-25 06:53:30,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 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 06:53:30,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:30,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:30,335 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 06:53:30,525 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 06:53:30,526 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:30,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:30,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1262250185, now seen corresponding path program 1 times [2023-08-25 06:53:30,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:30,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888251627] [2023-08-25 06:53:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:30,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:30,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888251627] [2023-08-25 06:53:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888251627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011145265] [2023-08-25 06:53:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:30,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:30,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:30,825 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 06:53:30,848 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 06:53:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:30,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 06:53:30,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:31,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:53:31,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011145265] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:53:31,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:53:31,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-08-25 06:53:31,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946797059] [2023-08-25 06:53:31,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:53:31,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:53:31,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:31,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:53:31,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:53:31,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 547 [2023-08-25 06:53:31,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 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 06:53:31,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:31,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 547 [2023-08-25 06:53:31,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:31,804 INFO L124 PetriNetUnfolderBase]: 4762/6785 cut-off events. [2023-08-25 06:53:31,805 INFO L125 PetriNetUnfolderBase]: For 33185/33185 co-relation queries the response was YES. [2023-08-25 06:53:31,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30561 conditions, 6785 events. 4762/6785 cut-off events. For 33185/33185 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 32817 event pairs, 1456 based on Foata normal form. 634/7419 useless extension candidates. Maximal degree in co-relation 30546. Up to 3473 conditions per place. [2023-08-25 06:53:31,860 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 90 selfloop transitions, 29 changer transitions 3/122 dead transitions. [2023-08-25 06:53:31,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 122 transitions, 1267 flow [2023-08-25 06:53:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:53:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:53:31,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 899 transitions. [2023-08-25 06:53:31,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108775137111517 [2023-08-25 06:53:31,863 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 899 transitions. [2023-08-25 06:53:31,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 899 transitions. [2023-08-25 06:53:31,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:31,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 899 transitions. [2023-08-25 06:53:31,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 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 06:53:31,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:31,868 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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 06:53:31,868 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 427 flow. Second operand 4 states and 899 transitions. [2023-08-25 06:53:31,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 122 transitions, 1267 flow [2023-08-25 06:53:31,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 1267 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:53:31,879 INFO L231 Difference]: Finished difference. Result has 58 places, 74 transitions, 843 flow [2023-08-25 06:53:31,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=843, PETRI_PLACES=58, PETRI_TRANSITIONS=74} [2023-08-25 06:53:31,880 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-08-25 06:53:31,880 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 74 transitions, 843 flow [2023-08-25 06:53:31,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 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 06:53:31,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:31,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:31,888 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 06:53:32,087 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 06:53:32,088 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:32,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1257042805, now seen corresponding path program 2 times [2023-08-25 06:53:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380431561] [2023-08-25 06:53:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:32,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:53:32,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380431561] [2023-08-25 06:53:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380431561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001252524] [2023-08-25 06:53:32,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:53:32,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:32,243 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 06:53:32,246 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 06:53:32,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:53:32,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:53:32,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 06:53:32,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:53:32,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:53:32,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001252524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:53:32,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:53:32,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-25 06:53:32,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269635909] [2023-08-25 06:53:32,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:53:32,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:53:32,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:32,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:53:32,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:53:32,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 547 [2023-08-25 06:53:32,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 74 transitions, 843 flow. Second operand has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 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 06:53:32,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:32,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 547 [2023-08-25 06:53:32,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:34,017 INFO L124 PetriNetUnfolderBase]: 9386/13396 cut-off events. [2023-08-25 06:53:34,017 INFO L125 PetriNetUnfolderBase]: For 97976/97976 co-relation queries the response was YES. [2023-08-25 06:53:34,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69446 conditions, 13396 events. 9386/13396 cut-off events. For 97976/97976 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 73378 event pairs, 2230 based on Foata normal form. 691/14087 useless extension candidates. Maximal degree in co-relation 69428. Up to 5627 conditions per place. [2023-08-25 06:53:34,141 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 116 selfloop transitions, 72 changer transitions 3/191 dead transitions. [2023-08-25 06:53:34,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 191 transitions, 2307 flow [2023-08-25 06:53:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:53:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:53:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1129 transitions. [2023-08-25 06:53:34,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127970749542962 [2023-08-25 06:53:34,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1129 transitions. [2023-08-25 06:53:34,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1129 transitions. [2023-08-25 06:53:34,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:34,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1129 transitions. [2023-08-25 06:53:34,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.8) internal successors, (1129), 5 states have internal predecessors, (1129), 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 06:53:34,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 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 06:53:34,165 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 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 06:53:34,165 INFO L175 Difference]: Start difference. First operand has 58 places, 74 transitions, 843 flow. Second operand 5 states and 1129 transitions. [2023-08-25 06:53:34,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 191 transitions, 2307 flow [2023-08-25 06:53:34,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 191 transitions, 2271 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-25 06:53:34,194 INFO L231 Difference]: Finished difference. Result has 64 places, 117 transitions, 1600 flow [2023-08-25 06:53:34,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1600, PETRI_PLACES=64, PETRI_TRANSITIONS=117} [2023-08-25 06:53:34,196 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-08-25 06:53:34,196 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 117 transitions, 1600 flow [2023-08-25 06:53:34,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 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 06:53:34,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:34,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:34,207 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 06:53:34,405 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 06:53:34,405 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:34,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1209869744, now seen corresponding path program 3 times [2023-08-25 06:53:34,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:34,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548378329] [2023-08-25 06:53:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:34,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:53:34,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:34,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548378329] [2023-08-25 06:53:34,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548378329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:34,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551590949] [2023-08-25 06:53:34,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:53:34,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:34,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:34,625 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 06:53:34,648 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 06:53:34,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:53:34,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:53:34,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 06:53:34,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:34,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:35,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551590949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:53:35,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:53:35,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-08-25 06:53:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666934790] [2023-08-25 06:53:35,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:53:35,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:53:35,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:53:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:53:35,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 547 [2023-08-25 06:53:35,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 117 transitions, 1600 flow. Second operand has 15 states, 15 states have (on average 195.66666666666666) internal successors, (2935), 15 states have internal predecessors, (2935), 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 06:53:35,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:35,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 547 [2023-08-25 06:53:35,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:39,975 INFO L124 PetriNetUnfolderBase]: 29067/41354 cut-off events. [2023-08-25 06:53:39,975 INFO L125 PetriNetUnfolderBase]: For 347137/347137 co-relation queries the response was YES. [2023-08-25 06:53:40,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246070 conditions, 41354 events. 29067/41354 cut-off events. For 347137/347137 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 264274 event pairs, 2372 based on Foata normal form. 7318/48672 useless extension candidates. Maximal degree in co-relation 246049. Up to 16685 conditions per place. [2023-08-25 06:53:40,342 INFO L140 encePairwiseOnDemand]: 540/547 looper letters, 819 selfloop transitions, 458 changer transitions 3/1280 dead transitions. [2023-08-25 06:53:40,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 1280 transitions, 18427 flow [2023-08-25 06:53:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 06:53:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 06:53:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7347 transitions. [2023-08-25 06:53:40,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3730956733698964 [2023-08-25 06:53:40,364 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7347 transitions. [2023-08-25 06:53:40,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7347 transitions. [2023-08-25 06:53:40,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:40,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7347 transitions. [2023-08-25 06:53:40,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 204.08333333333334) internal successors, (7347), 36 states have internal predecessors, (7347), 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 06:53:40,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 547.0) internal successors, (20239), 37 states have internal predecessors, (20239), 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 06:53:40,410 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 547.0) internal successors, (20239), 37 states have internal predecessors, (20239), 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 06:53:40,410 INFO L175 Difference]: Start difference. First operand has 64 places, 117 transitions, 1600 flow. Second operand 36 states and 7347 transitions. [2023-08-25 06:53:40,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 1280 transitions, 18427 flow [2023-08-25 06:53:40,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 1280 transitions, 17143 flow, removed 642 selfloop flow, removed 0 redundant places. [2023-08-25 06:53:40,878 INFO L231 Difference]: Finished difference. Result has 128 places, 563 transitions, 9618 flow [2023-08-25 06:53:40,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9618, PETRI_PLACES=128, PETRI_TRANSITIONS=563} [2023-08-25 06:53:40,879 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 53 predicate places. [2023-08-25 06:53:40,879 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 563 transitions, 9618 flow [2023-08-25 06:53:40,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 195.66666666666666) internal successors, (2935), 15 states have internal predecessors, (2935), 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 06:53:40,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:40,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:53:40,886 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 06:53:41,085 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 06:53:41,086 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:53:41,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1683187617, now seen corresponding path program 4 times [2023-08-25 06:53:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:41,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934141648] [2023-08-25 06:53:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:41,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:41,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934141648] [2023-08-25 06:53:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934141648] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:41,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632845070] [2023-08-25 06:53:41,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:53:41,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:41,213 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 06:53:41,215 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 06:53:41,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:53:41,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:53:41,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 06:53:41,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:41,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:53:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632845070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:53:41,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:53:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-25 06:53:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241390871] [2023-08-25 06:53:41,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:53:41,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 06:53:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 06:53:41,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-08-25 06:53:41,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-25 06:53:41,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 563 transitions, 9618 flow. Second operand has 13 states, 13 states have (on average 200.84615384615384) internal successors, (2611), 13 states have internal predecessors, (2611), 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 06:53:41,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:41,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-25 06:53:41,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:52,014 INFO L124 PetriNetUnfolderBase]: 39004/55486 cut-off events. [2023-08-25 06:53:52,014 INFO L125 PetriNetUnfolderBase]: For 2200829/2200829 co-relation queries the response was YES. [2023-08-25 06:53:52,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518928 conditions, 55486 events. 39004/55486 cut-off events. For 2200829/2200829 co-relation queries the response was YES. Maximal size of possible extension queue 2212. Compared 366570 event pairs, 7828 based on Foata normal form. 1620/57106 useless extension candidates. Maximal degree in co-relation 518878. Up to 27345 conditions per place. [2023-08-25 06:53:52,822 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 856 selfloop transitions, 194 changer transitions 70/1120 dead transitions. [2023-08-25 06:53:52,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 1120 transitions, 21493 flow [2023-08-25 06:53:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 06:53:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 06:53:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3333 transitions. [2023-08-25 06:53:52,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.380827239488117 [2023-08-25 06:53:52,831 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3333 transitions. [2023-08-25 06:53:52,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3333 transitions. [2023-08-25 06:53:52,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:52,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3333 transitions. [2023-08-25 06:53:52,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 208.3125) internal successors, (3333), 16 states have internal predecessors, (3333), 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 06:53:52,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 547.0) internal successors, (9299), 17 states have internal predecessors, (9299), 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 06:53:52,857 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 547.0) internal successors, (9299), 17 states have internal predecessors, (9299), 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 06:53:52,857 INFO L175 Difference]: Start difference. First operand has 128 places, 563 transitions, 9618 flow. Second operand 16 states and 3333 transitions. [2023-08-25 06:53:52,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 1120 transitions, 21493 flow [2023-08-25 06:54:03,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 1120 transitions, 19371 flow, removed 967 selfloop flow, removed 5 redundant places. [2023-08-25 06:54:03,172 INFO L231 Difference]: Finished difference. Result has 144 places, 709 transitions, 12037 flow [2023-08-25 06:54:03,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=8081, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12037, PETRI_PLACES=144, PETRI_TRANSITIONS=709} [2023-08-25 06:54:03,173 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 69 predicate places. [2023-08-25 06:54:03,173 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 709 transitions, 12037 flow [2023-08-25 06:54:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 200.84615384615384) internal successors, (2611), 13 states have internal predecessors, (2611), 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 06:54:03,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:54:03,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:54:03,183 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 06:54:03,383 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 06:54:03,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:54:03,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:54:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash -159228145, now seen corresponding path program 5 times [2023-08-25 06:54:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:54:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970196228] [2023-08-25 06:54:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:54:03,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:54:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:54:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:54:03,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:54:03,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970196228] [2023-08-25 06:54:03,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970196228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:54:03,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635216559] [2023-08-25 06:54:03,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:54:03,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:54:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:54:03,533 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 06:54:03,537 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 06:54:03,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 06:54:03,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:54:03,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:54:03,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:54:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:54:03,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:54:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:54:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635216559] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:54:03,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:54:03,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-25 06:54:03,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147306491] [2023-08-25 06:54:03,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:54:03,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 06:54:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:54:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 06:54:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:54:03,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 547 [2023-08-25 06:54:03,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 709 transitions, 12037 flow. Second operand has 14 states, 14 states have (on average 195.85714285714286) internal successors, (2742), 14 states have internal predecessors, (2742), 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 06:54:03,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:54:03,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 547 [2023-08-25 06:54:03,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:54:28,890 INFO L124 PetriNetUnfolderBase]: 80158/114191 cut-off events. [2023-08-25 06:54:28,890 INFO L125 PetriNetUnfolderBase]: For 5202007/5202007 co-relation queries the response was YES. [2023-08-25 06:54:30,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101491 conditions, 114191 events. 80158/114191 cut-off events. For 5202007/5202007 co-relation queries the response was YES. Maximal size of possible extension queue 4732. Compared 838993 event pairs, 8871 based on Foata normal form. 3000/117191 useless extension candidates. Maximal degree in co-relation 1101434. Up to 35761 conditions per place. [2023-08-25 06:54:30,724 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 1605 selfloop transitions, 577 changer transitions 160/2342 dead transitions. [2023-08-25 06:54:30,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 2342 transitions, 50673 flow [2023-08-25 06:54:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 06:54:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 06:54:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3492 transitions. [2023-08-25 06:54:30,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755242499193462 [2023-08-25 06:54:30,732 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3492 transitions. [2023-08-25 06:54:30,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3492 transitions. [2023-08-25 06:54:30,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:54:30,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3492 transitions. [2023-08-25 06:54:30,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 205.41176470588235) internal successors, (3492), 17 states have internal predecessors, (3492), 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 06:54:30,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 547.0) internal successors, (9846), 18 states have internal predecessors, (9846), 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 06:54:30,751 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 547.0) internal successors, (9846), 18 states have internal predecessors, (9846), 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 06:54:30,751 INFO L175 Difference]: Start difference. First operand has 144 places, 709 transitions, 12037 flow. Second operand 17 states and 3492 transitions. [2023-08-25 06:54:30,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 2342 transitions, 50673 flow [2023-08-25 06:58:58,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 2342 transitions, 43595 flow, removed 3457 selfloop flow, removed 5 redundant places. [2023-08-25 06:58:58,238 INFO L231 Difference]: Finished difference. Result has 162 places, 1153 transitions, 21425 flow [2023-08-25 06:58:58,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=10915, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21425, PETRI_PLACES=162, PETRI_TRANSITIONS=1153} [2023-08-25 06:58:58,238 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 87 predicate places. [2023-08-25 06:58:58,239 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 1153 transitions, 21425 flow [2023-08-25 06:58:58,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 195.85714285714286) internal successors, (2742), 14 states have internal predecessors, (2742), 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 06:58:58,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:58:58,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:58:58,245 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 06:58:58,439 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 06:58:58,440 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 06:58:58,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:58:58,440 INFO L85 PathProgramCache]: Analyzing trace with hash -602035450, now seen corresponding path program 6 times [2023-08-25 06:58:58,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:58:58,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164291939] [2023-08-25 06:58:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:58:58,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:58:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:58:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:58:58,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:58:58,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164291939] [2023-08-25 06:58:58,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164291939] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:58:58,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653270794] [2023-08-25 06:58:58,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:58:58,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:58:58,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:58:58,549 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 06:58:58,579 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 06:58:58,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 06:58:58,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:58:58,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 06:58:58,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:58:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:58:58,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:58:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:58:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653270794] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:58:58,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:58:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-25 06:58:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837103404] [2023-08-25 06:58:58,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:58:58,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 06:58:58,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:58:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 06:58:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:58:58,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 547 [2023-08-25 06:58:58,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 1153 transitions, 21425 flow. Second operand has 14 states, 14 states have (on average 195.42857142857142) internal successors, (2736), 14 states have internal predecessors, (2736), 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 06:58:58,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:58:58,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 547 [2023-08-25 06:58:58,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:00:01,427 INFO L124 PetriNetUnfolderBase]: 155451/221904 cut-off events. [2023-08-25 07:00:01,427 INFO L125 PetriNetUnfolderBase]: For 9070112/9070112 co-relation queries the response was YES. [2023-08-25 07:00:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147086 conditions, 221904 events. 155451/221904 cut-off events. For 9070112/9070112 co-relation queries the response was YES. Maximal size of possible extension queue 9129. Compared 1744152 event pairs, 16688 based on Foata normal form. 20642/242546 useless extension candidates. Maximal degree in co-relation 2147022. Up to 71195 conditions per place. [2023-08-25 07:00:05,421 INFO L140 encePairwiseOnDemand]: 540/547 looper letters, 4636 selfloop transitions, 1301 changer transitions 162/6099 dead transitions. [2023-08-25 07:00:05,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 6099 transitions, 139177 flow [2023-08-25 07:00:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-25 07:00:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-25 07:00:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 11095 transitions. [2023-08-25 07:00:05,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3687884327738076 [2023-08-25 07:00:05,511 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 11095 transitions. [2023-08-25 07:00:05,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 11095 transitions. [2023-08-25 07:00:05,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:00:05,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 11095 transitions. [2023-08-25 07:00:05,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 201.72727272727272) internal successors, (11095), 55 states have internal predecessors, (11095), 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 07:00:05,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 547.0) internal successors, (30632), 56 states have internal predecessors, (30632), 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 07:00:05,584 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 547.0) internal successors, (30632), 56 states have internal predecessors, (30632), 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 07:00:05,585 INFO L175 Difference]: Start difference. First operand has 162 places, 1153 transitions, 21425 flow. Second operand 55 states and 11095 transitions. [2023-08-25 07:00:05,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 6099 transitions, 139177 flow Received shutdown request... [2023-08-25 07:07:17,948 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 07:07:17,949 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 07:07:18,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-25 07:07:18,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown